Schneider Electric Pact Series MasterPact MTZ IEC Devices Basic and Standard End User Maintenance Installation Guide

: June 15, 2024
: Schneider Electric

Table of Contents

Schneider Electric Pact Series MasterPact MTZ IEC Devices Basic and
Product Information
Legal Information
Introduction
Product Usage Instructions
MasterPact MTZ Troubleshooting
FAQ
Legal Information
Safety Information
Document Scope
Introduction
Description
Data Availability
Procedure Definition
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Schneider Electric Pact Series MasterPact MTZ IEC Devices Basic and

Standard End User Maintenance

Schneider Electric-Pact-Series-MasterPact-MTZ-IEC-Devices-Basic-and-
Standard-End-User-Maintenance

Product Information

Specifications

Product Name: Pact Series
Model: MasterPact MTZ IEC Devices
End-User Maintenance Procedures: Basic and Standard
Guide Version: DOCA0103EN-06
Date: 06/2022
Manufacturer: Schneider Electric
Website: www.se.com

Legal Information

The Schneider Electric brand and any trademarks of Schneider Electric SE and its subsidiaries referred to in this guide are the property of Schneider Electric SE or its subsidiaries. All other brands may be trademarks of their respective owners.
This guide and its content are protected under applicable copyright laws and furnished for informational use only. No part of this guide may be reproduced or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), for any purpose, without the prior written permission of Schneider Electric.

Schneider Electric does not grant any right or license for commercial use of the guide or its content, except for a non-exclusive and personal license to consult it on an as is basis. Schneider Electric products and equipment should be installed, operated, serviced, and maintained only by qualified personnel.
As standards, specifications, and designs change from time to time, information contained in this guide may be subject to change without notice.

To the extent permitted by applicable law, no responsibility or liability is assumed by Schneider Electric and its subsidiaries for any errors or omissions in the informational content of this material or consequences arising out of or resulting from the use of the information contained herein.

As part of a group of responsible, inclusive companies, we are updating our communications that contain non-inclusive terminology. Until we complete this process, however, our content may still contain standardized industry terms that may be deemed inappropriate by our customers.

Introduction

The MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures is a comprehensive guide for the maintenance and troubleshooting of the Pact Series products. This guide provides detailed instructions and information to ensure safe and efficient operation of the MasterPact MTZ IEC Devices.

Product Usage Instructions

Safety Information
It is important to read and understand the safety information before attempting to install, operate, service, or maintain the MasterPact MTZ IEC Devices. The safety information includes special messages that warn of potential hazards and provide important instructions to follow.

Basic End-User Maintenance Procedures
The Basic End-User Maintenance Procedures section provides step-by-step instructions for routine maintenance tasks that can be performed by end-users. These procedures are designed to ensure the proper functioning and longevity of the MasterPact MTZ IEC Devices.

Standard End-User Maintenance Procedures
The Standard End-User Maintenance Procedures section provides more advanced maintenance tasks that can be performed by qualified end-users. These procedures may require specialized tools and knowledge. It is important to follow the instructions carefully to avoid any damage or safety risks.

MasterPact MTZ Troubleshooting

The MasterPact MTZ Troubleshooting section is a comprehensive guide to identify and resolve common issues that may occur with the MasterPact MTZ IEC Devices. It provides troubleshooting steps and solutions for various problems.

FAQ

Q: Can I perform end-user maintenance without any prior experience?
A: Basic end-user maintenance procedures can be performed by end-users with basic knowledge and following the provided instructions. However, for standard end-user maintenance procedures, it is recommended to have prior experience or consult a qualified professional.

Q: How often should I perform maintenance on the MasterPact MTZ IEC Devices?
A: The frequency of maintenance depends on the usage and operating conditions. It is recommended to refer to the maintenance schedule provided in the user manual or consult with the manufacturer or a qualified professional for specific guidelines.

Q: Where can I find replacement parts for the MasterPact MTZ IEC Devices?
A: Replacement parts for the MasterPact MTZ IEC Devices can be obtained from authorized distributors or directly from the manufacturer. It is important to use genuine parts to ensure compatibility and reliability.

Q: What should I do if I encounter an electrical hazard while performing maintenance?
A: If you encounter an electrical hazard during maintenance, immediately disconnect the power source and seek assistance from a qualified professional. Do not attempt to handle electrical hazards without proper training and equipment.

Pact Series
MasterPact MTZ IEC Devices Basic and Standard End-User Maintenance Procedures Maintenance Guide
Pact Series offers world-class breakers and switches DOCA0103EN-06 06/2022 www.se.com

Legal Information

The Schneider Electric brand and any trademarks of Schneider Electric SE and its subsidiaries referred to in this guide are the property of Schneider Electric SE or its subsidiaries. All other brands may be trademarks of their respective owners.
This guide and its content are protected under applicable copyright laws and furnished for informational use only. No part of this guide may be reproduced or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), for any purpose, without the prior written permission of Schneider Electric.
Schneider Electric does not grant any right or license for commercial use of the guide or its content, except for a non-exclusive and personal license to consult it on an “as is” basis. Schneider Electric products and equipment should be installed, operated, serviced, and maintained only by qualified personnel.
As standards, specifications, and designs change from time to time, information contained in this guide may be subject to change without notice.
To the extent permitted by applicable law, no responsibility or liability is assumed by Schneider Electric and its subsidiaries for any errors or omissions in the informational content of this material or consequences arising out of or resulting from the use of the information contained herein.
As part of a group of responsible, inclusive companies, we are updating our communications that contain non-inclusive terminology. Until we complete this process, however, our content may still contain standardized industry terms that may be deemed inappropriate by our customers.

Table of Contents

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

DOCA0103EN-06

Safety Information

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Important Information
Read these instructions carefully, and look at the equipment to become familiar with the device before trying to install, operate, service, or maintain it. The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.
The addition of this symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
! DANGER
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
! WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
! CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to physical injury.

Please Note

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
A qualified person is one who has skills and knowledge related to the construction and operation of electrical equipment and its installation, and has received safety training to recognize and avoid the hazards involved.

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures
About the Book

Document Scope

The aim of this document is to provide trained and qualified maintenance personnel with the technical information needed to perform Basic and Standard end-user preventive maintenance on the following devices:
· MasterPactTM MTZ1 IEC circuit breakers and switch-disconnectors
· MasterPactTM MTZ2/MTZ3 IEC circuit breakers and switch-disconnectors
For general information about Schneider Electric maintenance policies and expertise and tools, contact your Schneider Electric representative.

Validity Note

This document applies to the following IEC devices:
· MasterPact MTZ1/MTZ2/MTZ3 switch-disconnectors
· MasterPact MTZ1/MTZ2/MTZ3 circuit breakers with a MicroLogicTM X or MicroLogicTM Xi control unit
NOTE: This guide also applies to MicroLogicTM Xi control units. A MicroLogic Xi control unit is a MicroLogic X control unit without Bluetooth® Low Energy communication.
All the information related to the MicroLogic X control units presented in this guide applies to MicroLogic Xi control units except information about Bluetooth Low Energy communication.
The specific features of the MicroLogic Xi control units are described in the appendix in DOCA0102EN MasterPact MTZ – MicroLogic X Control Unit – User Guide.

Online Information
The information contained in this guide is likely to be updated at any time. Schneider Electric strongly recommends that you have the most recent and up- todate version available on www.se.com/ww/en/download.
The technical characteristics of the devices described in the present document also appear online. To access the information online, go to the Schneider Electric home page www.se.com/ww/en/download/.
The characteristics that are described in the present document should be the same as those characteristics that appear online. In line with our policy of constant improvement, we may revise content over time to improve clarity and accuracy. If you see a difference between the document and online information, use the online information as your reference.

Convention

In this document, the term MasterPact MTZ device covers circuit breakers and switch-disconnectors.

Introduction

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Introduction

Preventive maintenance tasks on MasterPact MTZ circuit breakers and switchdisconnectors are to be carried out following the Schneider Electric maintenance strategy.
Preventive maintenance tasks are organized into three programs depending on complexity and maintenance frequency, page 12:
· Basic end-user maintenance
· Standard end-user maintenance
· Manufacturer maintenance
NOTE: Global service plans delivered by Schneider Electric may include maintenance plans for your equipment, with a different wording for maintenance levels:
· Basic end-user maintenance in this guide corresponds to Routine maintenance in service plans.
· Standard end-user maintenance in this guide corresponds to Intermediate maintenance in service plans.
· Manufacturer maintenance remains the same. Refer to MasterPact MTZ – IEC Circuit Breakers and Switch-Disconnectors Maintenance Guide for the detailed Schneider Electric maintenance strategy.

Instruction Sheets
When a corrective action in a maintenance procedure references an instruction sheet, refer to the Related documents section at the top of the procedure to find the relevant instruction sheet for the product.
For example, a reference to MasterPact MTZ – MN-MX-XF Voltage Releases Instruction Sheet means using:
· MasterPact MTZ1/MTZ2/MTZ3 – MN-MX-XF Voltage Releases – Instruction Sheet or
· MasterPact MTZ1/MTZ2/MTZ3 – MN-MX-XF Communicating Voltage Releases with Diagnostic Function – Instruction Sheet.

Illustrations

The pictures and drawings in this document are for illustration only.

Tools

Performing the procedures of the maintenance program requires the following: · A standard toolbox with electrical tools and equipment for an electrician. · Specific tools, detailed in the maintenance procedures.

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures
Preventive Maintenance Frequency

Preventive Maintenance Frequency

Preventive Maintenance Safety Instructions
Maintenance recommendations for each device are intended to maintain the equipment or subassemblies in a satisfactory operational state for their useful service life.
Preventive maintenance schedule is calculated by the MicroLogic X control unit from:
· The operating conditions of the MasterPact MTZ device. · The criticality of the user application. The MicroLogic X control unit generates events to inform the user that maintenance needs to be planned to conform to the preventive maintenance schedule.
WARNING

UNINTENDED EQUIPMENT OPERATION
Follow the recommendations for the maintenance given in the different chapters of this document, for each part of the device which is maintainable.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
If the recommended maintenance plan is not done as required, the service life of electrical distribution equipment is reduced.

Maintenance Programs

The following table summarizes maintenance operations for the three preventive maintenance programs:

Maintenance program

Maintenance description

Performed by

Basic end-user maintenance

Visual inspection and functional testing, replacement of inoperative accessories.

· Trained and qualified end-user personnel
· Trained and qualified maintenance services provider personnel
· Schneider Electric field service representative

Standard end-user maintenance Basic end-user maintenance, plus operational servicing and subassembly tests.

· Trained and qualified maintenance services provider personnel
· Schneider Electric field service representative

Manufacturer maintenance

Standard end-user maintenance, plus

Schneider Electric field service representative

diagnostics and part replacements by Schneider

Electric Services.

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Preventive Maintenance Frequency

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Favorable Environmental Conditions and Device Operating Conditions

Environmental conditions and device operating conditions are considered to be favorable when all of the following conditions are met:

Favorable environmental conditions and device operating conditions

Temperature

Annual average ambient temperature outside the switchboard Ta < 25 °C (77 °F) (IEC 61439-1).

Percent load

Device installed in an air-conditioned room or in a ventilated switchboard. < 50 % of In (daily process 8/24 h or continuous process 24/24 h)

Relative humidity

< 50 %

Corrosive atmosphere

Device installed in category 3C1 environment or in a closed room that creates favorable operating conditions (air is conditioned and purified).

Salt environment Dust

None Negligible.

Device installed in a switchboard equipped with filters or a ventilated IP54 enclosure.

Vibration

None

Normal Environmental Conditions and Device Operating Conditions

Environmental conditions and device operating conditions are considered to be normal when all of the following conditions are met:

Normal environmental conditions and device operating conditions

Temperature

Annual average ambient temperature outside the switchboard Ta < 25 °C (77 °F) (IEC 61439-1)

Percent load

< 80 % of In (daily process 8/24 h or continuous process 24/24 h)

Harmonics

Harmonic current per phase < 30 % of In

Relative humidity

< 70 %

Corrosive atmosphere

Device installed in environment category 3C2 or 3C3 (IEC 60721-3-3)

Salt environment Dust

No salt mist Low level.

Device installed in a switchboard equipped with filters or a ventilated IP54 enclosure.

Vibration

Permanent vibration < 0.2 g

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Preventive Maintenance Frequency

Severe Environmental Conditions and Device Operating Conditions

Environmental conditions and device operating conditions are considered to be severe if any of the following conditions are present:

Severe environmental conditions and device operating conditions

Temperature

Annual average ambient temperature outside the switchboard Ta between 35 °C (95 °F) and 45 °C (113 °F) (IEC 61439-1)

Percent load

80 % of In (daily process 8/24 h or continuous process 24/24 h)

Relative humidity

80 %

Corrosive atmosphere

Device installed in category 3C4 environment without any particular protection

Salt environment

Device installed less than 10 kilometers from the coast without any particular protection

Dust

High level.

Device not installed inside an enclosure equipped with filters or a ventilated IP54 enclosure.

Vibration

Continuous vibrations between 0.2 g and 0.5 g

For example, severe environmental conditions and device operating conditions prevail in marine and wind power applications.

Criticality of User Application

The following table describes the three criticality levels of user application.

Criticality level Low Moderate
High

Description
The loss of function will cause minimal curtailment of operations or may require minimal monetary investment to restore full operations. Normal contingency planning would cover the loss.
The loss of function will have noticeable impact on the facility. It may have to suspend some operations briefly. Some monetary investments may be necessary to restore full operations. It may cause minor personal injury.
The loss of function will cause personal injury or substantial economic damage. Loss would not be disastrous, but the facility would have to suspend at least part of its operations immediately and temporarily. Reopening the facility would require significant monetary investments.

Recommended Frequency for the Basic End-User Maintenance Program

The following table indicates the recommended frequency to perform the Basic end-user maintenance program according to operating conditions and criticality of the user application.

Operating conditions
Favorable Normal Severe

Criticality of user application Low 2 years 1 year 1 year

Moderate 2 years 1 year 1 year

High 2 years 1 year 1 year

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Preventive Maintenance Frequency

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Recommended Frequency for the Standard End-User Maintenance Program

The following table indicates the recommended frequency to perform the Standard end-user maintenance program according to operating conditions and criticality of the user application.

Operating conditions
Favorable Normal Severe

Criticality of user application Low 4 years 2 years 2 years

Moderate 4 years 2 years 2 years

High 4 years 2 years 2 years

Recommended Frequency for the Manufacturer End-User Maintenance Program

The following table indicates the recommended frequency to perform the manufacturer end-user maintenance program according to operating conditions and criticality of the user application.

Operating conditions
Favorable Normal Severe

Criticality of user application Low 6 years 5 years 4 years

Moderate 5 years 4 years 3 years

High 4 years 3 years 2 years

A complete check-up is recommended when tripping occurs due to a short-time or instantaneous short-circuit.

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures
Process of Preventive Maintenance

Process of Preventive Maintenance

Process of Basic End-User Maintenance Program

The Basic end-user preventive maintenance includes the following stages:

Stage 1
2 3 4

Description
Take note of the notification (on MicroLogic X HMI, EcoStruxure Power Device app, or EcoStruxure Power Commission software) that the Basic end-user maintenance program is required.
Schedule the Basic end-user maintenance program.
Perform the Basic end-user maintenance program, page 22.
In EcoStruxure Power Commission software, fill in the date, maintenance operator and company names in the screen about the Basic end-user maintenance program, page 50.

Process of Standard End-User Maintenance Program

The Standard end-user preventive maintenance includes the following stages:

Stage 1
2 3 4 5

Description

Take note of the notification (on MicroLogic X HMI, EcoStruxure Power Device app, or EcoStruxure Power Commission software) that the Standard end-user maintenance program is required.
Schedule the Standard end-user maintenance program.
Perform the Basic end-user maintenance program, page 22.
Perform the Standard end-user maintenance program, page 90.
In EcoStruxure Power Commission software, fill in the date, maintenance operator and company names in the screen about the Standard end-user maintenance program, page 50.

Process of Manufacturer Maintenance Program

The Manufacturer preventive maintenance includes the following stages:

Stage 1
2 3

Description
Take note of the notification (on MicroLogic X HMI, EcoStruxure Power Device app, or EcoStruxure Power Commission software) that the Manufacturer maintenance program is required.
Schedule the Manufacturer maintenance program with your Schneider Electric field service representative.
The Schneider Electric field service representative performs the Manufacturer maintenance program and fills in the date in the screen about the Manufacturer maintenance program in EcoStruxure Power Commission software, page 50.

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Maintenance Schedule
Maintenance Schedule

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Overview

The MicroLogic X control unit provides information to help with scheduling preventive maintenance operations. It monitors maintenance programs performed and generates events to indicate that maintenance is due.
For more information about the maintenance schedule function, refer to MasterPact MTZ – MicroLogic X Control Unit – User Guide.

Operating Principle
The MicroLogic X control unit generates events to indicate that maintenance is due.
The schedule for maintenance operations depends on:
· The operating and environmental conditions of the MasterPact MTZ circuit breaker.
· The criticality of the user application.
· The date of the last maintenance program performed and declared by using EcoStruxure Power Commission software.
Basic and standard end-user maintenance schedule events and Manufacturer maintenance schedule events are calculated:
· For the first event:
From the commissioning date of the circuit breaker, if this date is declared by using EcoStruxure Power Commission software.
Otherwise from the assembly date of the circuit breaker.
· For subsequent events, from the date of the previous maintenance program (Basic, Standard, or Manufacturer) performed, if the date is declared by using EcoStruxure Power Commission software.
NOTE: Subsequent Manufacturer maintenance schedule events are calculated from the previous Manufacturer maintenance program performed and declared by using EcoStruxure Power Commission software.
If the date of the maintenance program performed is not declared by using EcoStruxure Power Commission software, the MicroLogic X control unit continues to use the commissioning date or assembly date to calculate the maintenance schedule events.

Maintenance Schedule Settings
The maintenance schedule is determined from the following recorded parameters and declared settings.
The following parameters for environmental conditions are recorded by the MicroLogic X control unit:
· Temperature · Percent load · Harmonics · Relative humidity · Vibration

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Maintenance Schedule

The following parameters for environmental conditions and user application criticality are declared by using EcoStruxure Power Commission software (password-protected).

Setting

Value

Environmental conditions

Corrosive atmosphere

Salt environment Dust User application criticality

· 3C1 (Rural area) · 3C2 (Urban area) · 3C3 (Immediate vicinity of industrial
pollution) · 3C4 (Inside polluting industrial
premises)
· None (No salt mist) · Moderate (Salt mist < 10 km from
seaside) · Significant (Salt mist < 1 km from
seaside)
· Low level · Moderate level · High level
· Low · Moderate · High

Factory setting 3C2
None
Low level Low

Data Availability

Maintenance schedule data is as follows: · Data of the last maintenance program performed, if the data is declared by using EcoStruxure Power Commission software: Program performed: Basic, Standard, or Manufacturer Date of maintenance operation Name of service provider Name of maintenance personnel · Data of the next maintenance program to be performed: Program to be performed: Basic, Standard, or Manufacturer Either the number of months before the program is due or the number of months it is overdue
Maintenance schedule data is available as follows: · On the MicroLogic X display screen at: Home > Maintenance > Assistance > Maint.schedule · With EcoStruxure Power Commission software · With EcoStruxure Power Device app through Bluetooth or USB OTG connection · On a remote controller using the communication network

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Maintenance Schedule

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Predefined Events

The maintenance schedule function generates the following events:

Event

History

Severity

Schedule basic maintenance within one month

Diagnostic

Medium(1)

Schedule standard maintenance within one month Schedule manufacturer maintenance within three months

Diagnostic Diagnostic

Medium(2) Medium(2)

(1) Disabled by default. Customizable with EcoStruxure Power Commission software.

(2) Enabled by default, with pop-up messages.

For information about recommended action on events, refer to the relevant document:
· MasterPact MTZ1 – Circuit Breakers and Switch-Disconnectors – User Guide
· MasterPact MTZ2/MTZ3 – Circuit Breakers and Switch-Disconnectors – User Guide

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Schneider Electric Green PremiumTM Ecolabel

Description

Green Premium by Schneider Electric is a label that allows you to develop and promote an environmental policy while preserving your business efficiency. This ecolabel is compliant with up-to-date environmental regulations.
Green PremiumTM

Accessing Green Premium
Green Premium data on labeled products can be accessed online through any of the following ways:
· By navigating to the Green Premium page on the Schneider Electric website. · By flashing the QR code displayed in the following image:

Checking Products Through the Schneider Electric Website
To check the environmental criteria of a product using a PC or smartphone, follow these steps:
1. From www.se.com, select Support > Green Premium: RoHS, REACH. 2. Find Check a Product and click Launch now to open the search tool
webpage. 3. Enter the commercial reference or product range of the product to search for. 4. To search for several products simultaneously, click the Add button, and then
fill in the field. 5. Click Check product(s) to generate a report of the environmental criteria
available for the products with the entered commercial references.

Environmental Criteria
The Green Premium ecolabel provides documentation on the following criteria about the environmental impact of the products:
· RoHs: European Union Restriction of Hazardous Substances (RoHS) directive.
· REACh: European Union Registration, Evaluation, Authorization, and Restriction of Chemicals regulation.
· PEP: Product Environmental Profile. · EoLI: End of Life Instructions.

RoHs

Schneider Electric products are subject to RoHS requirements at a worldwide level, even for the many products that are not required to comply with the terms of the regulation. Compliance certificates are available for products that fulfill the criteria of this European initiative, which aims to eliminate hazardous substances.

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Schneider Electric Green PremiumTM Ecolabel

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

REACh

Schneider Electric applies the strict REACh regulation on its products at a worldwide level, and discloses extensive information concerning the presence of SVHC (Substances of Very High Concern) in all of these products.

PEP

Schneider Electric publishes complete set of environmental data, including carbon footprint and energy consumption data for each of the life cycle phases on all of its products, in compliance with the ISO 14025 PEP ecopassport program. PEP is especially useful for monitoring, controlling, saving energy, and/or reducing carbon emissions.

EoLI

These instructions provide:
· Recyclability rates for Schneider Electric products.
· Guidance to mitigate personnel hazards during the dismantling of products and before recycling operations.
· Part identification for recycling or for selective treatment, to mitigate environmental hazards/incompatibility with standard recycling processes.

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures
Basic End-User Maintenance Procedures
What’s in This Part
Device NII_Z_1: Check the General Condition of the Device…………………………23 Mechanism NII_Z_1: Operate the Device Manually and Electrically………………..29 Mechanism NII_Z_2: Charge the Device Electrically with MCH Gear Motor ………………………………………………………………………………………………37 Mechanism NII_Z_3: Check the Complete Closing of Device Poles………………..41 Auxiliaries NII_Z_1: Check Auxiliary Wiring and Insulation……………………………43 Control Unit NII_Z_1: Check Device Tripping and Operation of SDE Fault-Trip Indication Contacts……………………………………………………………………………..47 Control Unit NII_Z_2: Check Ground- Fault (Micrologic 6.0 X) or EarthLeakage (Micrologic 7.0 X) Protection Function …………………………………………55 Control Unit NII_Z_3: Check Operation of Energy Reduction Maintenance Settings (ERMS) ………………………………………………………………………………..58 Device Locking NII_Z_1: Operate Device Keylocks…………………………………….62 Device Locking NII_Z_2: Operate Device Padlocks…………………………………….65 Chassis NII_Z_1: Check Device Racking Operation ……………………………………68 Chassis NII_Z_2: Check IBPO Racking Interlock Between Racking Handle and Opening Pushbutton (MasterPact MTZ2/MTZ3) …………………………………..73 Chassis NII_Z_3: Check EIFE Chassis Position Limit Switches……………………..75 Chassis Locking NII_Z_1: Operate Chassis Keylocking System…………………….81 Chassis Locking NII_Z_2: Operate Chassis Padlocking System…………………….85 Mechanical Interlocking NII_Z_1: Operate Interlocking Systems ……………………88

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Device NII_Z_1: Check the General Condition of the Device

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Device NII_Z_1: Check the General Condition of the Device

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action
Goal Frequency Special indications Necessary tools Related documents, page 6

Description
Visually check that there are no visible signs of aging or damage on the different parts of the device.
Verify the general condition of the device in operation or following long storage
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.

· MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ1 3P/4P – Front Cover – Instruction Sheet · MasterPact MTZ2 3P/4P – Front Cover – Instruction Sheet · MasterPact MTZ1/MTZ2/MTZ3 – MicroLogic Transparent Cover – Instruction Sheet · MicroLogic X – Spare Battery – Instruction Sheet · MicroLogic X – Embedded Display – Instruction Sheet

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MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Device NII_Z_1: Check the General Condition of the Device

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Open Open

Mechanism Discharged Discharged

Device position in the chassis N/A Disconnected

Checking the Front Cover of the Device

Step 1

Action
Check presence of all screws on the front cover: · For MasterPact MTZ1: four screws. · For MasterPact MTZ2/MTZ3: five screws.

2

Check that the front cover is not cracked, split open, or deformed.

3

Check that the identification labels are present on the device and the

chassis, including:

· Identification labels (bar code)

Corrective action
If any screws are missing, replace the front cover (refer to MasterPact MTZ 3P/4P – Front Cover Instruction Sheet).
Refer to the MasterPact MTZ Catalog for spare parts.
If the front cover is damaged, replace it (refer to MasterPact MTZ 3P/4P – Front Cover – Instruction Sheet).
Refer to the MasterPact MTZ Catalog for spare parts.
To replace the rating plate, contact your field service representative.

· Rating plate

4

If available, check the label indicating the date of the last maintenance

operation.

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Device NII_Z_1: Check the General Condition of the Device

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Checking the MicroLogic X Control Unit

Step 1

Action Check that the transparent cover is in place.

2

To open the transparent cover, pull its upper right-hand side corner.

Corrective action
· If the transparent cover is not correctly mounted, remove it then mount it again (refer to MasterPact MTZ1/MTZ2/MTZ3 MicroLogic Transparent Cover – Instruction Sheet).
· If the transparent cover is missing or damaged, replace it. Refer to the MasterPact MTZ Catalog for spare parts.

NOTE: The transparent cover must be opened to modify the protection settings locally or to access the mini USB port on the front of the MicroLogic X control unit.

At the end of each check when using the mini USB port:
1. Remove the cable from the mini USB port.
2. Close the transparent cover completely.
The cover does not need to be opened when modifying the protection settings remotely.

3

Briefly press (<1 s) the Test/Reset button and check that the four trip

cause LEDs and the red Service LED are on.

· If one LED does not light up, contact your field service representative.
· If the four LEDs light up in sequence or the four trip cause LEDs and the red Service LED do not light up:
1. Replace the MicroLogic X internal battery (refer to MicroLogic X – Spare Battery – Instruction Sheet).
2. Do the procedure again.
NOTE: If the LEDs light up in sequence, the red Service LED remains lit until the battery is changed or empty.
If the problem persists, contact your field service representative.

4

Connect the MicroLogic X control unit to a power supply.

For example, connect the Mobile Power Pack external battery to the MicroLogic X USB port.

DOCA0103EN-06

25

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures
Step Action

Device NII_Z_1: Check the General Condition of the Device Corrective action

5

Check that the Ready LED is flashing, meaning that the fault detection

If the LED does not flash and no event message

chain is working correctly.

is displayed on the control unit, contact your field

service representative to replace the MicroLogic X

control unit.

6

Press the Bluetooth button and check that the Bluetooth LED is on.

If the LED does not light up, replace the MicroLogic X display screen (refer to MicroLogic X – Embedded Display – Instruction Sheet).

7

Check the legibility of the data and settings displayed on the MicroLogic X If the display is not legible, or if the contextual

display screen.

buttons are not operating correctly, replace the MicroLogic X display screen (refer to MicroLogic X – Embedded Display – Instruction Sheet).

NOTE: The protection functions remain operational when the MicroLogic X display screen is not operating correctly. Settings and data can be viewed on other interfaces, for example, EcoStruxure Power Commission software.
26

DOCA0103EN-06

Device NII_Z_1: Check the General Condition of the Device
Cleaning the Device

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

NOTICE
HAZARD OF EQUIPMENT DAMAGE
Do not use pressurized cleaning products or products containing solvents (trichloroethane or trichloroethylene) such as WD40.
Failure to follow these instructions can result in equipment damage.

Pressurized cleaning products can cause the following damages:
· Removal of grease from inaccessible lubrication points. These areas are greased for the life of the device and cannot be regreased.
· Corrosion of points that are not regreased.
· Damage caused by the pressure applied by the cleaning product.
· Temperature rise due to the presence of an insulating solvent in the contact zones.
· Elimination of special protection.
· Deterioration of plastic materials.

Step 1

Action Clean the device using a clean, dry cloth or a brush.

Comment
If there is excessive dust, contact your field service representative.

Checking the Case of the Device and Chassis for Drawout Device

Step 1
2

Action Check for cracks and change in color.
Check for traces of black smoke (indicating tripping due to a short-circuit) around the arc chutes and on the sides.

Corrective action
If there are cracks or change in color, contact your field service representative.
If there are traces of black smoke, contact your field service representative.

NOTE: For a fixed device, remove the additional support brackets, if necessary.

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27

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures
Checking Connections

Device NII_Z_1: Check the General Condition of the Device

Step 1

Action
Visually check the device terminals for a change in color indicating abnormal temperature rise.
· For fixed devices: customer terminals · For drawout devices:
Customer terminals

Corrective action
If there is a change in color on device terminals and you are qualified, follow procedure Power Connections NIII_Z_1, page 165. Otherwise, contact your field service representative.

Internal terminals

Disconnecting contact clusters

2

Visually check the condition of cable insulation (for example, change in

If the cables show signs of damage to insulation

color, cracks, or cable shrinkage).

and you are qualified, follow procedure Power

Connections NIII_Z_1, page 165. Otherwise,

contact your field service representative.

Checking Connections in Corrosive Environments
In the case of corrosive environments, contact your field service representative.
For example, devices may be used in places where sulfur dioxide (SO2) or hydrogen sulphide (H2S) are present, such as, steel works, paper mills, synthetic fibers, refineries, and sulfur chemical plants. Corrosive chemicals can have an impact on the integrity of the device:
· Excessive temperature rise causes sulfurization (oxidation) of silver and results in destructionof contacts.
· Contact with SO2 and H2S blackens solid silver and silver-plated contacts which increases contact resistance and temperature.

28

DOCA0103EN-06

Mechanism NII_Z_1: Operate the Device Manually and Electrically

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_1: Operate the Device Manually and Electrically

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action
Goal Frequency Special indications

Description
Check the operation of: · Charging mechanism using the spring charging handle. · Device opening and closing mechanism by using: The pushbuttons. The XF/MX/MN voltage releases. EcoStruxure Power Commission software when communicating voltage releases are installed. · The position indicators. · The CDM operation counter, if present.
Verify that the device can be opened/closed manually and electrically.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.
Connect the XF/MX/MN voltage releases to the power supply.

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29

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_1: Operate the Device Manually and Electrically

Procedure characteristics Necessary tools
Related documents, page 6

Description
· Adjustable external power supply · Voltmeter · LV847074SP terminal block · A PC running EcoStruxure Power Commission software · A USB cable (standard to mini USB port)
· MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ1 – CDM Operation Counter – Instruction Sheet · MasterPact MTZ2/MTZ3 – CDM Operation Counter – Instruction Sheet · MasterPact MTZ1/MTZ2/MTZ3 – MN-MX-XF Voltage Releases – Instruction Sheet · MasterPact MTZ1/MTZ2/MTZ3 – MN-MX-XF Communicating Voltage Releases with
Diagnostic Function – Instruction Sheet · MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Open Open

Mechanism Discharged Discharged

Device position in the chassis N/A Test

Checking Manual Opening/Closing of the Device

Step 1

Action
For fixed devices equipped with the MCH gear motor, disconnect the auxiliary circuit for the MCH gear motor (terminals B1 and B2).

Corrective action

2

Manually charge the mechanism by pulling the spring

charging handle down six times.

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DOCA0103EN-06

Mechanism NII_Z_1: Operate the Device Manually and Electrically

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Step Action

Corrective action

When the spring charging handle no longer resists, the mechanism is charged.

3

Press the closing pushbutton to close the device.

If the device does not close, refer to troubleshooting in the appendix, page 171.
If the problem persists, contact your field service representative.

The device closes.

4

Check that the indicators show that the device is

closed, and the mechanism is discharged.

If the indicators show different information, refer to troubleshooting in the appendix, page 171.
If the problem persists, contact your field service representative.

5

Check that the CDM operation counter increments. If the CDM operation counter does not increment, check it is correctly

installed (refer to MasterPact MTZ – CDM Operation Counter –

Instruction Sheet).

If the CDM operation counter does not increment and is correctly installed, replace it.

6

Charge the mechanism again.

Check that the indicators show that the device is closed, and the mechanism is charged and not ready-to-close.

If the indicators show different information, refer to troubleshooting in the appendix, page 171.
If the problem persists, contact your field service representative.

7

Press the opening pushbutton to open the device.

If the device does not open, refer to troubleshooting in the appendix,

page 171.

The device opens.

If the problem persists, contact your field service representative.

8

Check that the indicators show that the device is

If the indicators show different information, refer to troubleshooting in

open, and the mechanism is charged and ready-to- the appendix, page 171.

close.

If the problem persists, contact your field service representative.

DOCA0103EN-06

31

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_1: Operate the Device Manually and Electrically

Checking Electrical Closing with the XF Closing Voltage Release

DANGER
HAZARD OF ELECTRIC SHOCK
When using the adjustable external power supply, take all suitable measures to protect against electric shock.
Failure to follow these instructions will result in death or serious injury.

Step 1
2

Action
Reconnect the auxiliary circuit for the MCH gear motor (terminals B1 and B2).
Press the external pushbutton to close the device.
The device closes.

Corrective action
If the device does not close, it can be due to external conditions. Refer to troubleshooting in the appendix, page 171. If the external conditions are correct:
· For a fixed device: replace the XF closing voltage release (refer to MasterPact MTZ – MN-MX-XF Voltage Releases – Instruction Sheet) and do the procedure again.
· For a drawout device, check that the XF closing voltage release operates correctly as follows: 1. Put the device in the withdrawn position. 2. Insert a replacement LV847074SP terminal block in the appropriate location on the device.

3. Connect the XF closing voltage release to the adjustable external power supply set to Un.
If the device closes, replace the auxiliary terminal block (refer to MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet) and do the procedure again with the device in the test position.
If the device does not close, replace the XF closing voltage release (refer to MasterPact MTZ – MN-MX-XF Voltage Releases – Instruction Sheet) and do the procedure again.
Refer to the MasterPact MTZ Catalog for spare parts.

If the problem persists, contact your field service representative.

3

Check that the indicators show that the

If the indicators show different information, refer to troubleshooting in the

device is closed and check the mechanism appendix, page 171.

status:

· Without MCH gear motor, the

If the problem persists, contact your field service representative.

mechanism is discharged.

· With MCH gear motor, the mechanism is charged.

4

Check that the CDM operation counter

increments.

If the CDM operation counter does not increment, check it is correctly installed (refer to MasterPact MTZ – CDM Operation Counter – Instruction Sheet). If the CDM operation counter is correctly installed, replace it.

32

DOCA0103EN-06

Mechanism NII_Z_1: Operate the Device Manually and Electrically

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Checking Electrical Opening with the MX Opening Voltage Release

DANGER
HAZARD OF ELECTRIC SHOCK
When using the adjustable external power supply, take all suitable measures to protect against electric shock.
Failure to follow these instructions will result in death or serious injury.

Execute the following procedure for MX1 then MX2, if connected.

Step 1

Action

Corrective action

For drawout devices, check that the device is in the test position.

2

Press the external pushbutton to open the

If the device does not open, it can be due to external conditions. Refer to

device.

troubleshooting in the appendix, page 171.

The device opens.

If the external conditions are correct:
· For a fixed device: replace the MX opening voltage release (refer to MasterPact MTZ – MN-MX-XF Voltage Releases – Instruction Sheet) and do the procedure again.
· For a drawout device, check that the MX closing voltage release operates correctly as follows:
1. Put the device in the withdrawn position.
2. Insert an LV847074SP terminal block in the appropriate location on the device.

3. Connect the MX opening voltage release to the adjustable external power supply set to Un.
If the device opens, replace the auxiliary terminal block (refer to MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet) and do the procedure again with the device in the test position.
If the device does not open, replace the MX opening voltage release and do the procedure again with the device in the test position.
Refer to the MasterPact MTZ Catalog for spare parts.

If the problem persists, contact your field service representative.

3

Check that the indicators show that the

If the indicators show different information, refer to troubleshooting in the

device is open and check the mechanism

appendix, page 171.

status:

· Without MCH gear motor, the

If the problem persists, contact your field service representative.

mechanism is discharged.

· With MCH gear motor, the mechanism is charged.

DOCA0103EN-06

33

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_1: Operate the Device Manually and Electrically

Checking Electrical Opening with the MN Undervoltage Release

Step 1

Action For drawout devices, check that the device is in the test position.

Corrective action

2

· Without MCH gear motor: manually charge the mechanism by

pulling the spring charging handle down six times.

When the spring charging handle no longer resists, the mechanism is charged.

· With MCH gear motor: the mechanism is automatically charged.

3

Press the external pushbutton to close the device.

If the device does not close, check the MN undervoltage release wiring and power supply, and refer to troubleshooting in the appendix, page 171.

The device closes.

4

· For fixed devices:

Remove the fixed auxiliary terminal block.

Then, the device opens.

· For drawout devices:

Rack-out the device to the disconnected position.

Then, the device opens.

5

Check that the indicators show that the device is open and check the

mechanism status:

· Without MCH gear motor, the mechanism is discharged.

If the device does not open, replace the MN undervoltage release (refer to MasterPact MTZ MN-MX-XF Voltage Releases – Instruction Sheet).
Refer to the MasterPact MTZ Catalog for spare parts.
If the problem persists, contact your field service representative.
If the indicators show different information, refer to troubleshooting in the appendix, page 171.
If the problem persists, contact your field service representative.

· With MCH gear motor, the mechanism is charged and not ready-toclose.

Checking Opening/Closing of the Device in a Communication Network
If XF/MX communicating voltage releases are installed in the device, do the following procedure to test the close and open controls of the device by using EcoStruxure Power Commission software.

34

DOCA0103EN-06

Mechanism NII_Z_1: Operate the Device Manually and Electrically

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Step 1

Action
Connect a PC running EcoStruxure Power Commission software to the MicroLogic X control unit.

Corrective action

A Cable plug connected to the mini USB port of MicroLogic X control unit

B Standard to mini USB port cable

C PC running EcoStruxure Power Commission software

2

Launch EcoStruxure Power Commission software.

3

Click Connect Device Directly.

Result: A window displays to indicate that the device discovery is in progress. It disappears automatically when the device is discovered.

4

Click NEXT to close the Project Information window.

5

Click CONTINUE to close the END USER SITE DETAILS window and

display the SWITCHBOARD VIEW.

6

Click the Connect to device button.

7

In the Device Check up section, click the Device tab.

8

Click CLOSE to close the device.

9

Read carefully the safety message that displays then click Accept.

10

You are prompted to provide the password:

1. Type the Administrator password of the MicroLogic X control unit.

2. Click OK.

11

A message displays when the close operation of the device has

completed successfully. Click OK.

12

In Device Status data, check that Breaker position is Close.

13

In the SWITCHBOARD VIEW window, click OPEN to open the device.

14

Read carefully the safety message that displays then click Accept.

15

You are prompted to provide the password:

1. Type the Administrator password of the MicroLogic X control unit.

2. Click OK.

If the device does not close, refer to troubleshooting in the appendix, page 178.
If the device status is not correct, contact your field service representative.

DOCA0103EN-06

35

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_1: Operate the Device Manually and Electrically

Step 16 17 18 19

Action

Corrective action

A message displays when the open operation of the device has completed If the device does not open, refer to

successfully. Click OK.

troubleshooting in the appendix, page 178.

In Device Status data, check that Breaker position is Open.

If the device status is not correct, contact your field service representative.

Click the Disconnect button to disconnect the device from EcoStruxure Power Commission software.

Exit EcoStruxure Power Commission software.

36

DOCA0103EN-06

Mechanism NII_Z_2: Charge the Device Electrically with MCH MasterPact MTZ IEC DevicesBasic and Standard End-User

Gear Motor

Maintenance Procedures

Mechanism NII_Z_2: Charge the Device Electrically with MCH Gear Motor

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action
Goal Frequency Special indications Necessary tools
Related documents, page 6

Description
· Check the operation of the MCH gear motor and its charging time. · Check the operation of the CH contact of the MCH gear motor. · Check the number of charging operations of MCH gear motor from a mobile device.
Verify that the device charges electrically.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.
Connect the MCH gear motor to the power supply.
· Stopwatch · Ohmmeter · LV847074SP terminal block · MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ – MicroLogic X Control Unit – User Guide · MasterPact MTZ – IEC Circuit Breakers and Switch-Disconnectors – Maintenance Guide · MasterPact MTZ1 – MCH Gear Motor – Instruction Sheet for operating limits · MasterPact MTZ2/MTZ3 – MCH Gear Motor – Instruction Sheet · MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet

DOCA0103EN-06

37

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_2: Charge the Device Electrically with MCH Gear Motor

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Open Open

Mechanism Discharged Discharged

Device position in the chassis N/A Test

MCH Gear Motor Wiring Diagram

MCH Gear Motor Charging Time Definition
The charging time is the time elapsed between the closing order and the moment when the mechanism is fully charged. The charging time during the closing operation does not exceed 6 seconds.

Checking Operation of MCH Gear Motor and CH Contact

Step 1 2
3

Action

Corrective action

Remove the MCH gear motor power supply.

Do an opening/closing/opening cycle to discharge the mechanism.

With the device in the open position and the mechanism discharged, check electrical continuity between terminals B1-B2, and electrical noncontinuity between terminals B1-B3.

In case of electrical non-continuity between terminals B1-B2, or electrical continuity between terminals B1-B3:
· For a fixed device: replace the MCH gear motor (refer to MasterPact MTZ – MCH Gear Motor – Instruction Sheet) and do the procedure again.

38

DOCA0103EN-06

Mechanism NII_Z_2: Charge the Device Electrically with MCH MasterPact MTZ IEC DevicesBasic and Standard End-User

Gear Motor

Maintenance Procedures

Step Action

Corrective action
· For a drawout device, check that the MCH gear motor operates correctly as follows: 1. Put the device in the withdrawn position. 2. Insert an LV847074SP terminal block at the appropriate location on the device.

3. Check the electrical continuity between terminals B1-B2 and noncontinuity between terminals B1-B3 directly on the LV847074SP terminal block.
If the check is correct, replace the auxiliary terminal block (refer to MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals Instruction Sheet) and do the procedure again with the device in the test position.
If the check is not correct, replace the MCH gear motor and do the procedure again with the device in the test position.
Refer to the MasterPact MTZ Catalog for spare parts.

If the problem persists, contact your field service representative.

4

Manually charge the mechanism.

5

Reconnect the MCH gear motor power supply.

6

Start the stopwatch while pressing the closing

pushbutton.

If the device does not close, refer to troubleshooting in the appendix, page 171.

If the problem persists, contact your field service representative.

The device closes and the mechanism is automatically charged.

7

Stop the stopwatch when the mechanism is totally

charged.

8

Check the mechanism charging time: it must not If the charging time exceeds 6 seconds, do the procedure three more

exceed 6 seconds.

times from the beginning.

If the charging time does not improve, follow the procedure Mechanism NIII_Z_1 to check the voltage supply of the MCH gear motor, page 91.

If there is still no improvement, replace the MCH gear motor and measure the charging time again.

If the problem persists, contact your field service representative.

9

Check electrical continuity between terminals B1- In case of electrical non- continuity between terminals B1-B3, see the

B3.

corrective action concerning electrical continuity above.

DOCA0103EN-06

39

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_2: Charge the Device Electrically with MCH Gear Motor

Checking Number of Charging Operations of MCH Gear Motor From EcoStruxure Power Device App on a Smartphone

You can read the charging motor counter remotely from EcoStruxure Power Device app with Bluetooth connection.

Step 1
2

Action

Corrective action

Read the value on the mobile application.

For information about EcoStruxure Power Device app, refer to MasterPact MTZ – MicroLogic X Control Unit – User Guide. Compare the value with the maximum number of charging operations indicated in MasterPact MTZ – IEC Circuit Breakers and Switch-Disconnectors Maintenance Guide.

· If the limit has been reached, replace the MCH gear motor (refer to MasterPact MTZ – MCH Gear Motor – Instruction Sheet).
· If the limit is close, preventively replace the MCH gear motor (refer to MasterPact MTZ – MCH Gear Motor – Instruction Sheet).

40

DOCA0103EN-06

Mechanism NII_Z_3: Check the Complete Closing of Device Poles

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_3: Check the Complete Closing of Device Poles

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action Goal Frequency Special indications
Necessary tools Related documents, page 6

Description
Check that when the spring charging handle is pulled down with the device in the closed position and the mechanism charged, the device does not open.
Verify that the poles are closed and mechanically latched after closing the device manually.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.
This check must be carried out manually.
On fixed devices equipped with the MCH gear motor, disconnect the auxiliary circuit for the MCH gear motor (terminals B1 and B2).
· MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide

DOCA0103EN-06

41

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Mechanism NII_Z_3: Check the Complete Closing of Device Poles

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Open Open

Mechanism Discharged Discharged

Device position in the chassis N/A Disconnected

Checking Device Pole Complete Closing

Step 1

Action
Manually charge the mechanism by pulling the spring charging handle down six times.
When the spring charging handle no longer resists, the mechanism is charged.

Corrective action

2

Press the closing pushbutton to close the device.

If the device does not close, refer to troubleshooting in the appendix, page 171.
If the problem persists, contact your field service representative.

The device closes.

3

Pull the spring charging handle down. The device must

remain closed.

If the device opens (the indicator shows are not mechanically latched.

The indicator shows

.

Contact your field service representative.

), the poles

42

DOCA0103EN-06

Auxiliaries NII_Z_1: Check Auxiliary Wiring and Insulation

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Auxiliaries NII_Z_1: Check Auxiliary Wiring and Insulation

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action Goal Frequency Special indications Necessary tools Related documents, page 6

Description Visually check external and internal wiring and insulation of control and indication auxiliaries.
Verify electrical continuity of auxiliary circuits and contact robustness.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.
Flat screwdriver, 3 mm · MasterPact MTZ1 – IEC Circuit Breakers and Switch- Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet

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43

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Auxiliaries NII_Z_1: Check Auxiliary Wiring and Insulation

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Open Open

Mechanism Discharged Discharged

Device position in the chassis N/A Disconnected

Checking Terminal Block and Connector Wiring

DANGER
HAZARD OF ELECTRIC SHOCK
Use a properly rated voltage sensing device to confirm that the PTE voltage measurement input is de-energized (V1, V2, V3 on UC4 terminal block, VN on UC3 terminal block).
Failure to follow these instructions will result in death or serious injury.

Step 1

Action Remove the auxiliary terminal shield from a drawout device, if present.

Corrective action

2

Check that the external wiring is connected securely in the terminals.

If the connection is loose, replace the terminal blocks (refer to MasterPact MTZ1/MTZ2/MTZ3 Auxiliary Terminals – Instruction Sheet).
Refer to the MasterPact MTZ Catalog for spare parts.

3

Visually check the insulation of the external wiring.

If the wire insulation is cracked or damaged, replace the wires.

4

Check the terminal blocks for warping, damage, or change in color

indicating abnormal temperature rise.

If there is a change in color, replace the terminal blocks (refer to MasterPact MTZ1/MTZ2/MTZ3 Auxiliary Terminals – Instruction Sheet).

5

For a MasterPact MTZ2/MTZ3 drawout device, remove the terminal block

identification plate.

6

Check the connection and wire insulation between the two parts of the

terminal blocks.

If the connection is loose or the wire insulation is cracked or damaged, replace the terminal blocks

44

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Auxiliaries NII_Z_1: Check Auxiliary Wiring and Insulation Step Action

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures
Corrective action (refer to MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet).

7

Check the mounting of connectors on the auxiliary crossbar.

· If a connector is damaged, replace the terminal block (refer to MasterPact MTZ1/ MTZ2/MTZ3 – Auxiliary Terminals Instruction Sheet).
· If the crossbar is damaged, contact your field service representative.

8

For a device with ULP port module, refer to Checking Connection on the

Optional ULP Port Module, page 45.

For a device with EIFE interface, refer to Checking Connection on the Optional EIFE Interface, page 46.

9

Put the terminal block identification plate and the auxiliary terminal shield

back in place.

Checking Connections on the Optional ULP Port Module

Step 1
2
3

Action Check the connection of the 24 Vdc power supply on the ULP port module.
Check the connection of the ULP cords on the ULP port module.
Check the ULP cord insulation.

Corrective action
· If the cable is loose, tighten it. · If the cable insulation is cracked or damaged,
replace the cable. Refer to the MasterPact MTZ Catalog for spare parts.
If a plug clip on an RJ45 connector is damaged, replace the ULP cord.
Refer to the MasterPact MTZ Catalog for spare parts.
If the insulation is cracked or damaged, replace the ULP cord.
Refer to the MasterPact MTZ Catalog for spare parts.

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45

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Auxiliaries NII_Z_1: Check Auxiliary Wiring and Insulation

Checking Connections on the Optional EIFE Interface

Step 1
2 3

Action Check the connection of the ULP cord on the EIFE interface.
Check the connections of the Ethernet cables on the EIFE interface. Check the Ethernet cable insulation.

Corrective action
· If the cable is loose, tighten it. · If the cable insulation is cracked or damaged,
replace the cable. · If the plug clip on the connector is damaged,
replace the cable. Refer to the MasterPact MTZ Catalog for spare parts.
If a plug clip on an RJ45 connector is damaged, replace the Ethernet cable.
If the insulation is cracked or damaged, replace the Ethernet cable.

46

DOCA0103EN-06

Control Unit NII_Z_1: Check Device Tripping and Operation of MasterPact MTZ IEC DevicesBasic and Standard End-User

SDE Fault-Trip Indication Contacts

Maintenance Procedures

Control Unit NII_Z_1: Check Device Tripping and Operation of SDE Fault-Trip Indication Contacts

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action
Goal Frequency Special indications

Description
· Check that the device trips. · Check that the fault-trip indication contacts, SDE1 (standard) and SDE2 (optional), operate
correctly. · Check that the device resets mechanically (standard) and electrically (with optional RES
remote reset).
Verify that the device operates fully (tripping mechanism, indication, and reset) when an electrical fault occurs.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.

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47

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_1: Check Device Tripping and Operation of SDE Fault-Trip Indication Contacts

Procedure characteristics Necessary tools
Related documents, page 6

Description
· A PC running EcoStruxure Power Commission software · A USB cable (standard to mini USB port) · LV847074SP terminal block · Ohmmeter
· MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ – MicroLogic X Control Unit – User Guide · EcoStruxure Power Commission Online Help · MasterPact MTZ2/MTZ3 – SDE2 Fault-Trip Indication Contact / RES Remote Reset –
Instruction Sheet · MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Closed Closed

Mechanism Discharged Discharged

Device position in the chassis N/A Test

SDE Fault-Trip Indication Contact and RES Remote Reset Wiring Diagram

The optional RES electrical remote reset is not compatible with the optional SDE2 additional fault-trip indication contact because they are installed in the same physical place.

SDE1 and SDE2 fault-trip indication contacts

SDE1 fault-trip indication contact and RES remote reset

48

DOCA0103EN-06

Control Unit NII_Z_1: Check Device Tripping and Operation of MasterPact MTZ IEC DevicesBasic and Standard End-User

SDE Fault-Trip Indication Contacts

Maintenance Procedures

Checking the MicroLogic X Trip Cause LEDs

Step 1

Action
Briefly press (<1 s) the Test/Reset button and check that the four trip cause LEDs and the red Service LED are on.

Corrective action
· If one LED does not light up, contact your field service representative.
· If the four LEDs light up in sequence or the four trip cause LEDs and the red Service LED do not light up, refer to Step 3 when checking the MicroLogic X control unit in procedure Device NII_Z_1, page 25.
NOTE: If the LEDs light up in sequence, the red Service LED remains lit until the battery is changed or empty.

Do a Force Trip Test

Step 1
2

Action
If the device is equipped with an MN undervoltage release, either connect it to the power supply with its rated voltage or remove the MN undervoltage release.

Corrective action

Connect a PC running EcoStruxure Power Commission software to the MicroLogic X control unit.

A Cable plug connected to the mini USB port of MicroLogic X control unit

B Standard to mini USB port cable

C PC running EcoStruxure Power Commission software

3

On EcoStruxure Power Commission software, select the device.

4

Force the device to trip by clicking the Force trip button on the

EcoStruxure Power Commission screen.

DOCA0103EN-06

49

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_1: Check Device Tripping and Operation of SDE Fault-Trip Indication Contacts

Step 5
6

Action Check that the device trips and that the blue fault-trip reset button on the front cover pops out.
Check that the LED Isd/Ii is on and that the MicroLogic X screen display turns to red with the corresponding message.

Corrective action
· If the blue fault-trip reset button does not pop out, contact your field service representative.
· If the device does not trip:
1. Check that the device is closed.
2. Check that the blue fault-trip reset button is pushed-in. Refer to troubleshooting in the appendix, page 171.
3. Do the procedure again.
· If the problem persists, contact your field service representative.

Declaring the Maintenance Date in EcoStruxure Power Commission Software

NOTICE
INCORRECT MAINTENANCE SCHEDULE
The date of the maintenance program performed must be declared by using EcoStruxure Power Commission software.
Failure to follow these instructions will result in invalid maintenance schedule.

Step 1 2
3 4

Action
On EcoStruxure Power Commission software, display the SWITCHBOARD VIEW. Click Device Check up section. Result: The product switchboard displays.
Click the Maintenance tab. In the Last Maintenance Details section, click View history.

Corrective action

5

Click the pen icon next to the maintenance program you perform.

50

DOCA0103EN-06

Control Unit NII_Z_1: Check Device Tripping and Operation of MasterPact MTZ IEC DevicesBasic and Standard End-User

SDE Fault-Trip Indication Contacts

Maintenance Procedures

Step Action

Corrective action

6

In the window that opens:

1. Enter the day’s date.

NOTE: When the maintenance program is performed, the date must be defined in EcoStruxure Power Commission software to synchronize the next maintenance date.

2. Enter your company name in Company name.

3. Enter your name in Maintenance operator name.

4. Click APPLY to validate changes and close the window.

7

The maintenance program definition is protected by a password.

You are prompted to provide the password: 1. Type the Administrator password of the MicroLogic X control unit. 2. Click CONTINUE.
Result: The maintenance program definition is updated.

8

Click the green arrow on the left side of Last Maintenance Details.

9

In the Maintenance screen:

If Last Maintenance Details are incorrect,

·

Check that Last Maintenance Details have been correctly updated.

change data in EcoStruxure Power Commission software again.

· Take note of information in Next Maintenance Details:

Level: Maintenance program defined by the maintenance frequency regarding the device maintenance plan.

Due in: Time interval (in months) in which the next maintenance program indicated must be performed.

Overdue since: If applicable, time interval (in months) since the scheduled date of the indicated maintenance program.

NOTE: In due course, a maintenance program reminder displays the time interval in which the next maintenance program must be performed.

10

Exit EcoStruxure Power Commission software.

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51

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_1: Check Device Tripping and Operation of SDE Fault-Trip Indication Contacts

Checking Operation of SDE Fault-Trip Indication Contact

Step 1

Action
With the device in tripped position, check electrical continuity between terminals 81-84 on SDE1 contact.

Corrective action
In case of electrical non-continuity between terminals: · For a fixed device, contact your field service representative. · For a drawout device, check that the SDE1 contact operates correctly, as follows: 1. Put the device in the withdrawn position. 2. Insert an LV847074SP terminal block at the appropriate location on the device.

3. Check the electrical continuity directly on the LV847074SP terminal block:
If the SDE1 contact operates correctly, replace the auxiliary terminal block installed on the chassis (refer to MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet) and do the procedure again with the device in the test position.
If the SDE1 contact does not operate correctly, contact your field service representative.

2

With the device in tripped position, check electrical continuity In case of electrical non-continuity between terminals:

between terminals 181-184 on SDE2 contact, if installed.

· For a fixed MTZ1 device, contact your field service

representative.

· For a fixed MTZ2/MTZ3 device: replace the SDE2 contact (refer to MasterPact MTZ2/MTZ3 – SDE2 FaultTrip Indication Contact / RES Remote Reset – Instruction Sheet) and do the procedure again.

· For a drawout device, check that the SDE2 contact operates correctly, as follows:

1. Put the device in the withdrawn position.

2. Insert an LV847074SP terminal block in the appropriate location on the device.

3

Press the closing pushbutton.

3. Check the electrical continuity directly on the LV847074SP terminal block:
If the SDE2 contact operates correctly, replace the auxiliary terminal block (refer to MasterPact MTZ1/ MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet) and do the procedure again with the device in the test position.
If the SDE2 contact does not operate correctly:
For MasterPact MTZ1, contact your field service representative.
For MasterPact MTZ2/MTZ3, replace the SDE2 contact (refer to MasterPact MTZ2/MTZ3 – SDE2 Fault-Trip Indication Contact / RES Remote Reset Instruction Sheet).
If the device does not operate as expected, contact your field service representative.

52

DOCA0103EN-06

Control Unit NII_Z_1: Check Device Tripping and Operation of MasterPact MTZ IEC DevicesBasic and Standard End-User

SDE Fault-Trip Indication Contacts

Maintenance Procedures

Step Action

Corrective action

· If the device is configured with the RAR automatic reset option, the device closes.
· If the device is not configured with the RAR automatic reset option, the device must not close.

4

Press the blue fault-trip reset button on the front cover to

reset.

If the blue fault-trip reset button does not reset, contact your field service representative.

5

Check electrical continuity between terminals 81-82 on SDE1 In case of electrical non-continuity between terminals, refer to

contact.

corrective action in step 1.

6

Check electrical continuity between terminals 181-182 on

In case of electrical non-continuity between terminals, refer to

SDE2 contact, if installed.

corrective action in step 2.

7

Check that the log and the trip/test counter are recorded in

control unit log by using display screen or EcoStruxure

Power Commission software.

8

Press and hold the Test/Reset button on the control unit for 3

seconds to reset the trip cause LEDs.

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53

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_1: Check Device Tripping and Operation of SDE Fault-Trip Indication Contacts

Checking Operation of Optional RES Remote Reset

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
Take all measures necessary to avoid the risk of electrocution when the external power supply voltage is greater than 30 Vac or 40 Vdc.
Failure to follow these instructions will result in death or serious injury.

Step 1

Action
With the device in tripped position, press the Remote Reset pushbutton connected to the RES Remote Reset option.
Result: The blue fault trip button on the front cover must return to the reset position, pushed in the device.

Corrective Action
If the blue fault trip button remains in the trip position, it can be due to external conditions. Refer to troubleshooting, page 171.
If the external conditions are correct: · For a MasterPact MTZ1 device: contact your field service representative. · For a MasterPact MTZ2/MTZ3 fixed device: replace the RES contact (refer to MasterPact MTZ2/MTZ3 – SDE2 Fault- Trip Indication Contact / RES Remote Reset – Instruction Sheet) and do the procedure again. · For a MasterPact MTZ2/MTZ3 drawout device, check that the RES contact operates correctly, as follows: 1. Put the device in the withdrawn position. 2. Insert an LV847074SP terminal block at the appropriate location on the device.

3. Apply the RES voltage supply on the LV847074SP terminal block.
4. Close the device.
5. Trip the device using the trip test function in EcoStruxure Power Commission software (refer to Do a Trip Test), page 49:
If the RES remote reset option resets the device, replace the auxiliary terminal block (refer to MasterPact MTZ1/MTZ2/MTZ3 – Auxiliary Terminals – Instruction Sheet) and do the procedure again with the device in the test position.
If the RES remote reset option does not reset the device, replace the RES contact (refer to MasterPact MTZ2/MTZ3 – SDE2 Fault-Trip Indication Contact / RES Remote Reset – Instruction Sheet) and do the procedure again.

54

DOCA0103EN-06

Control Unit NII_Z_2: Check Ground-Fault (Micrologic 6.0 X) or Earth-Leakage (Micrologic 7.0 X) Protection Function

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_2: Check Ground-Fault (Micrologic 6.0 X) or Earth-Leakage (Micrologic 7.0 X) Protection Function

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

This procedure is valid for circuit breakers equipped with a Micrologic 6.0 X or Micrologic 7.0 X control unit.

Procedure characteristics Action
Goal Frequency Special indications
Necessary tools Related documents, page 6

Description
Check that the device trips on ground-fault (Micrologic 6.0 X) or earth- leakage (Micrologic 7.0 X) by using the test button on the control unit.
Verify that the ground-fault or earth-leakage protection functions operate.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.
Connect the MicroLogic X control unit to a power supply. For example, connect the Mobile Power Pack external battery to the MicroLogic USB port.

· MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ – MicroLogic X Control Unit – User Guide

DOCA0103EN-06

55

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_2: Check Ground-Fault (Micrologic 6.0 X) or Earth-Leakage (Micrologic 7.0 X) Protection Function

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Closed Closed

Mechanism Discharged Discharged

Device position in the chassis N/A Test

Checking MicroLogic X Control Unit Trip Cause LED

Step 1
2

Action
If the device is equipped with an MN undervoltage release, either connect it to the power supply with its rated voltage or remove the MN undervoltage release.
To open the transparent cover, pull its upper right-hand side corner.

Corrective action

3

Use a thin screwdriver to briefly push-in (<1 s) the test button, If the Ig/In LED does not light up, contact your field service

and then check that the Ig/In LED is on and the screen

representative.

display turns to red with the corresponding message.

4

Check that the device trips and that the blue fault-trip reset

button on the front cover pops out.

5

Press and hold the Test/Reset button for 3 seconds to reset

the trip cause LEDs.

6

Manually charge the mechanism by pulling the spring

charging handle down six times.

When the spring charging handle no longer resists, the mechanism is charged.

· If the blue fault-trip reset button does not pop out, contact your field service representative.
· If the device does not trip:
1. Check that the device is closed.
2. Check that the blue fault-trip reset button is pushed-in. Refer to troubleshooting in the appendix, page 171.
3. Do the procedure again.
If the problem persists, contact your field service representative.

56

DOCA0103EN-06

Control Unit NII_Z_2: Check Ground-Fault (Micrologic 6.0 X) or Earth-Leakage (Micrologic 7.0 X) Protection Function

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Step 7
8

Action
If the device is equipped with an MN undervoltage release, either connect it to the power supply with its rated voltage or remove the MN undervoltage release.
Press the closing pushbutton.
The device must not close.

9

Press the blue fault-trip reset button on the front cover to

reset.

Corrective action
If the device closes, check with customer order form: · With RAR automatic reset option ordered by customer: operation is normal. · Without RAR automatic reset option ordered by customer: contact your field service representative.
If the blue fault-trip reset button does not reset, contact your field service representative.

10

Press the closing pushbutton.

The device closes.

If the device does not close, refer to troubleshooting in the appendix, page 171.
If the problem persists, contact your field service representative.

DOCA0103EN-06

57

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_3: Check Operation of Energy Reduction Maintenance Settings (ERMS)

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action
Goal Frequency Special indications Necessary tools
Related documents, page 6

Description
· Check engagement of the ERMS function by smartphone. · Test the ERMS tripping curve. · Check engagement of the ERMS function by external selector switch.
Verify that the ERMS function is operational when engaged.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.

· A PC running EcoStruxure Power Commission software. · A USB cable (standard to mini USB port). · A smartphone running the EcoStruxure Power Device app. · MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ – MicroLogic X Control Unit – User Guide · EcoStruxure Power Commission Online Help

58

DOCA0103EN-06

Control Unit NII_Z_3: Check Operation of Energy Reduction Maintenance Settings (ERMS)

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Closed Closed

Mechanism Discharged Discharged

Device position in the chassis N/A Test

Checking Engagement of ERMS by Smartphone

Step 1
2 3

Action

Corrective action

Connect a smartphone to the control unit through a Bluetooth connection and open the EcoStruxure Power Device app.

Engage the ERMS function from the smartphone.

On the MicroLogic X control unit, check that:
1. The ERMS LED is lit blue.
2. The screen is lit with a blue backlight.
3. The message ERMS engaged: Smartphone is displayed in Quick View > Trip
Curve. NOTE: An active medium or high severity event message overrides the blue backlight and is displayed with an orange or a red backlight. Click OK to acknowledge. The screen is once again lit with a blue backlight while ERMS is engaged.

· If the backlight is not lit blue:
1. Check the power supply connections to the control unit.
2. If the connection if OK, replace the MicroLogic X display screen (refer to MicroLogic X Embedded Display Instruction Sheet)
· If the ERMS LED is not lit blue, contact your field service representative.
· If the message ERMS engaged: Smartphone is not
displayed in Quick View >
Trip Curve, contact your field service representative.

Testing the ERMS Tripping Curve

Step 1

Action
Connect a PC running EcoStruxure Power Commission software to the MicroLogic X control unit.

Corrective action

A Cable plug connected to the mini USB port of MicroLogic X control unit

B Standard to mini USB port cable

C PC running EcoStruxure Power Commission software

2

Launch EcoStruxure Power Commission software.

3

Click Connect Device Directly.

Result: A window displays to indicate that the device discovery is in progress. It disappears automatically when the device is discovered.

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59

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Control Unit NII_Z_3: Check Operation of Energy Reduction Maintenance Settings (ERMS)

Step 4

Action Click NEXT to close the Project Information window.

Corrective action

5

Click CONTINUE to close the END USER SITE DETAILS window and display the

SWITCHBOARD VIEW.

6

Click the Connect to device button.

7

Click View trip curve.

8

In EcoStruxure Power Commission software, check that the active trip curve is ERMS. If the active trip curve does not

refresh automatically, close the

Active trip curve window with the

cross on the right and reopen it.

9

Launch a trip test sequence on the ERMS settings.

Result: The protection trips on the ERMS settings.

If the trip test fails, contact your field service representative.

10

Disengage ERMS from the smartphone.

11

In EcoStruxure Power Commission software, check that the active trip curve is Set A If the active trip curve does not

or Set B.

refresh automatically, close the

Active trip curve window with the

cross on the right and reopen it.

12

On the MicroLogic X control unit, check that:

1. The ERMS LED is off.

2. The blue backlight is off.
3. The message ERMS engaged: Smartphone is not displayed in Quick View >
Trip Curve.

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DOCA0103EN-06

Control Unit NII_Z_3: Check Operation of Energy Reduction Maintenance Settings (ERMS)

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Checking Engagement of ERMS by External Selector Switch

Step 1 2
3 4 5

Action Engage ERMS by turning the external selector switch. On the MicroLogic X control unit, check that:
1. The ERMS LED is lit blue. 2. The screen is lit with a blue backlight. 3. The message ERMS engaged: Switch (ERMS) is displayed in
Quick View > Trip Curve.
Disengage ERMS by turning the external selector switch. In EcoStruxure Power Commission software, check that the active
trip curve is Set A or Set B in View trip curve > Active trip curve.
Exit EcoStruxure Power Commission software.

Corrective Action
· If the backlight is not lit blue: 1. Check the power supply connections to the control unit. 2. If the connection if OK, replace the MicroLogic X display screen (refer to MicroLogic X – Embedded Display Instruction Sheet)
· If the ERMS LED is not lit blue, contact your field service representative.
· If the message ERMS engaged: Switch
(ERMS) is not displayed in Quick View >
Trip Curve, contact your field service representative. If the switch does not engage the ERMS function, contact your field service representative.

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61

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Device Locking NII_Z_1: Operate Device Keylocks

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action Goal Frequency Special indications Necessary tools Related documents, page 6

Description
Check the locking and unlocking of the device with keylocks.
Verify the operation of keylocks with the optional VSPO OFF-position locking accessory.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.

· MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ1 – VCPO OFF-Position Locking and BPFE Support – Instruction Sheet · MasterPact MTZ2/MTZ3 – VCPO OFF-Position Locking and BPFE Support – Instruction Sheet

62

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Device Locking NII_Z_1: Operate Device Keylocks

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Closed Open

Mechanism Discharged Discharged

Device position in the chassis N/A Disconnected

Checking Locking the Device in the Open Position

For devices with two keylocks, execute the following procedure for each keylock. Locking with one key is sufficient to lock the device in the open position.

Step 1

Action With the key captive in the keylock, check that the device is not locked.

2

Press the opening pushbutton to open the device.

Corrective action
If the key is missing or broken, replace the keylock.
Refer to the MasterPact MTZ Catalog for spare parts.

3

· For MasterPact MTZ1: Press and hold down the opening

pushbutton, and simultaneously turn the key counterclockwise.

· For MasterPact MTZ2/MTZ3: Turn the key counterclockwise.

If the key does not turn, replace the keylock.

4

Remove the key and release the opening pushbutton.

NOTE: For MasterPact MTZ1, the pushbutton remains pushed-in.

5

Charge the mechanism to be able to give a closing order.

6

If the device is equipped with an MN undervoltage release, either connect

it to the power supply with its rated voltage or remove the MN

undervoltage release.

7

Press the closing pushbutton.

· If the device closes, check that the lock support is correctly installed (refer to MasterPact MTZ – VCPO OFF-Position Locking and BPFE Support – Instruction Sheet). Then do the procedure again.
· If the lock support is damaged, replace it.
· If the keylock is corroded, replace it.
If the problem persists, contact your field service representative.

The device must not close.

8

If there is a second key, unlock the device and do the procedure with the

second key.

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63

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Device Locking NII_Z_1: Operate Device Keylocks

Checking Device Unlocking

Before starting this check, verify that the device is locked in the open position.
For devices with two keylocks, execute the following procedure for each keylock. Both keys must be inserted in the keylocks to unlock the device.

Step 1 2

Action
Put the key in the keylock.
Turn the key clockwise and check that the key cannot be removed from the lock.

3

Press the closing pushbutton to close the device.

Corrective action
If the key does not turn or can be removed, replace the keylock. Refer to the MasterPact MTZ Catalog for spare parts.
If the device does not close, check that the lock support is correctly installed (refer to MasterPact MTZ – VCPO OFF-Position Locking and BPFE Support – Instruction Sheet). Then do the procedure again. If the lock support is damaged, replace it. If the keylock is corroded, replace it. If the problem persists, contact your field service representative.

The device closes.

4

With the device closed, check that the key remains captive unless the

opening pushbutton is pressed.

64

DOCA0103EN-06

Device Locking NII_Z_2: Operate Device Padlocks

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Device Locking NII_Z_2: Operate Device Padlocks

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action Goal Frequency Special indications Necessary tools Related documents, page 6

Description
Check the locking and unlocking of the device with padlocks.
Verify the operation of padlocks with the optional VCPO OFF-position locking accessory.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.

Padlock with shackle diameter 58 mm · MasterPact MTZ1 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide · MasterPact MTZ1 – VCPO OFF- Position Locking and BPFE Support – Instruction Sheet · MasterPact MTZ2/MTZ3 – VCPO OFF-Position Locking and BPFE Support – Instruction Sheet

DOCA0103EN-06

65

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Device Locking NII_Z_2: Operate Device Padlocks

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles Open Open

Mechanism Discharged Discharged

Device position in the chassis N/A Disconnected

Checking Locking the Device in the Open Position

Step 1

Action Press the opening pushbutton to open the device.

Corrective action

2

Pull out the tab of the OFF-position locking accessory.

3

Install the padlock.

If the padlocking tab cannot be pulled out, check that the lock support is correctly installed (refer to MasterPact MTZ – VCPO OFF-Position Locking and BPFE Support – Instruction Sheet). Then do the procedure again.
If the lock support is damaged, replace it.
Refer to the MasterPact MTZ Catalog for spare parts.

4

Charge the mechanism to be able to give a closing order.

5

If the device is equipped with an MN undervoltage release, either

connect it to the power supply with its rated voltage or remove the MN

undervoltage release.

6

Press the closing pushbutton.

If the device closes, check that the lock support is correctly installed (refer to MasterPact MTZ – VCPO OFF-Position Locking and BPFE Support – Instruction Sheet). Then do the procedure again.

If the lock support is damaged, replace it.

If the problem persists, contact your field service representative.

The device must not close. 66

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Device Locking NII_Z_2: Operate Device Padlocks

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Checking Device Unlocking

Before starting this check, verify that the device is padlocked in the open position.

Step 1

Action Remove the padlock from the padlocking tab.

Corrective action
If the tab does not retract fully, replace the lock support.

· For MasterPact MTZ1: push in the tab. · For MasterPact MTZ2/MTZ3: the tab retracts automatically.

2

Press the closing pushbutton to close the device.

If the device does not close, check that the lock support is correctly installed (refer to MasterPact MTZ – VCPO OFF-Position Locking and BPFE Support Instruction Sheet). Then do the procedure again.
If the lock support is damaged, replace it.
If the problem persists, contact your field service representative.

The device closes.

3

With the device closed, check that the padlocking tab cannot be

pulled out.

If the tab can be pulled out, replace the lock support.

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67

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Chassis NII_Z_1: Check Device Racking Operation

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
· Check that the device and the chassis are de-energized on the upstream and downstream terminals.
· Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
· Install safety barriers and display a danger sign.
· During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
· Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is off (open position).
· Before turning on power to this equipment, put all devices, doors, and covers back in place.
· Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.
Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics Action
Goal Frequency Special indications Necessary tools Related documents, page 6

Description
· Check the racking operations of the device. · Check the device pre-tripping. · Check the chassis position indicator.
Verify that the device operates correctly in its chassis.
Refer to Recommended Frequency for the Basic End-User Maintenance Program, page 14.
Before the check, the device must be de-energized (no current flowing through the device and no voltage present on busbar).
Racking handle · MasterPact MTZ1 – IEC Circuit Breakers and Switch- Disconnectors – User Guide · MasterPact MTZ2/MTZ3 – IEC Circuit Breakers and Switch-Disconnectors – User Guide

68

DOCA0103EN-06

Chassis NII_Z_1: Check Device Racking Operation

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPact MTZ User Guides to find instructions for operating the device.

Device installation type Fixed Drawout

Position of poles N/A Closed

Mechanism N/A Charged

Device position in the chassis N/A Connected

Racking Handle Insertion Possibilities

MasterPact MTZ1

Before starting the check, verify that the racking handle can be inserted into its socket:
· The device is not locked with keylocks or padlocks.
· If the IBPO racking interlock between the racking handle and the opening pushbutton is installed (MasterPact MTZ2/MTZ3), press the opening pushbutton to allow insertion of the racking handle, page 73.
· With VPOC racking interlock option installed, the switchboard door must be closed.
MasterPact MTZ2/MTZ3

The following table shows the possible ways that the racking handle can be inserted.

Switchboard door

VPOC option

Racking handle insertion

Closed Open

Absent Present Absent Present

Possible Possible Possible Not possible(1)

(1) Press and hold the racking interlock to insert the racking handle into the racking handle socket.

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69

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Chassis NII_Z_1: Check Device Racking Operation

Racking-out the Device from Connected to Disconnected Position

Step 1

Action
With the drawout device in the chassis, check that the indicators located on the front of the chassis show that the device is closed and in the connected position.

Corrective action
If the position indicator is incorrect, contact your field service representative.

2

Remove the racking handle from its storage space, and then insert it into If the racking handle cannot be inserted into the

the racking handle socket.

racking handle socket, check the insertion

possibilities above.

If the problem persists, contact your field service representative.

3

Push in the position release button.

4

Turn the racking handle counterclockwise:

· MasterPact MTZ1: one turn.

If the racking handle cannot be turned, contact your field service representative.

· MasterPact MTZ2/MTZ3: three to four turns.

NOTE: The racking handle cannot be turned if the position release button is not pushed in.

5

The device opens automatically.

Check that the position indicator indicates that the device is in open position.

If the device does not open or the position indicator is incorrect, contact your field service representative.

6

Continue turning the racking handle counterclockwise until the test

position is reached.

When the test position is reached, the mechanism blocks the racking handle and the position release button pops out.

7

Check that the position indicator indicates the test position.

If the mechanism is not blocked in the test position or the button does not pop out, contact your field service representative.
If the indicator is incorrect, contact your field service representative.

8

Push in the position release button again.

9

Turn the racking handle counterclockwise until the disconnected position If the racking handle cannot be turned, contact

is reached.

your field service representative.

NOTE: The racking handle cannot be turned if the position release button is not pushed in.

10

When the disconnected position is reached, the mechanism blocks the

racking handle and the position release button pops out.

If the mechanism is not blocked in the disconnected position or the button does not pop out again, contact your field service representative

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Chassis NII_Z_1: Check Device Racking Operation

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Step 11

Action Check that the position indicator indicates the disconnected position.

Corrective action
If the indicator is incorrect, contact your field service representative.

12

Remove the racking handle from the racking socket, and then put it back

into its storage space.

13

Open the door of the switchboard.

Racking-in the Device from Disconnected to Connected Position

Before starting this check, verify that the device is open and the mechanism is charged.

Step 1

Action
Check that the position indicator located on the front of the chassis indicates the disconnected position.

Corrective action
If the position indicator is incorrect, contact your field service representative.

2

Remove the racking handle from its storage space, and then insert it into If the racking handle cannot be inserted into the

the racking handle socket.

racking handle socket, check the insertion

NOTE: If the IBPO racking interlock between the racking handle and possibilities above.

the opening pushbutton is installed (MasterPact MTZ2/MTZ3), press the opening pushbutton to allow insertion of the racking handle.

If the problem persists, contact your field service representative.

3

Push in the position release button.

4

Turn the racking handle clockwise until the test position is reached.

NOTE: The racking handle cannot be turned if the position release button is not pushed in.

5

When the test position is reached, the mechanism blocks the racking

handle and the position release button pops out.

If the mechanism is not blocked in the test position or the button does not pop out, contact your field service representative.

6

Check that the position indicator indicates the test position.

If the position indicator is incorrect, contact your field service representative.

7

Press the closing pushbutton to close the device.

If the device does not close, check that:
· MN undervoltage release is connected to a power supply.
· The device is charged.
If the problem persists, contact your field service representative.

The device closes.

8

Push in the position release button again.

9

Turn the racking handle clockwise:

· MasterPact MTZ1: one turn.

· MasterPact MTZ2/MTZ3: six to seven turns.

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71

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Chassis NII_Z_1: Check Device Racking Operation

Step 10 11
12

Action

Corrective action

NOTE: The racking handle cannot be turned if the position release button is not pushed in.

The device opens automatically.

If the device does not open, contact your field service representative.

Continue turning the racking handle clockwise until the connected position is reached.
When the connected position is reached, the mechanism blocks the racking handle and the position release button pops out.

If the mechanism is not blocked in the connected position or the button does not pop out, contact your field service representative.

Check that the position indicator indicates the connected position.

If the position indicator is incorrect, contact your field service representative.

13

Remove the racking handle from the racking socket, and then put it back

into its storage space.

14

Charge the spring mechanism.

15

Close the device.

If the device does not close, check that:
· MN undervoltage release is connected to a power supply.
· The device is charged.
If the problem persists, contact your field service representative.

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Chassis NII_Z_2: Check IBPO Racking Interlock Between Racking Handle and Opening Pushbutton (MasterPact MTZ2/ MTZ3)

MasterPact MTZ IEC DevicesBasic and Standard End-User Maintenance Procedures

Chassis NII_Z_2: Check IBPO Racking Interlock

Between Racking Handle and Opening Pushbutton

(MasterPact MTZ2/MTZ3)

Safety Instructions
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
· Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
· This equipment must only be installed and serviced by qualified electrical personnel.
· Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device,