ST UBLI MA292 Branch Connector User Manual

: June 12, 2024
: ST UBLI

Table of Contents

ST UBLI MA292 Branch Connector
Intended use
Safety instructions
Requirements for personnel
Safe assembly and mounting
Tools required
Plugging and unplugging
Notes on installation
Technical Data
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

ST UBLI MA292 Branch Connector

Intended use

Branch connectors MC4-Evo 2 are used to connect two MC4/ MC4-Evo 2 plugs or two MC4/MC4-Evo 2 sockets in parallel. For this purpose, each branch connector has a total of three terminals.

Safety instructions

Importance of the assembly instructions
NOT following the assembly and safety instructions could result in life- threatening injuries due to electric shock, electric arcs, fi re, or failure of the system.

Follow the entire assembly instructions.
Use and install the product only according to this assembly instructions and the technical data.
Safely store the assembly instructions and pass them on to subsequent users.

Intended use
The connector electrically connects components within the DC circuits of a photovoltaic array. The connector can be used for purposes other than those in a photovoltaic array, e.g., as an LVDC component. If the component is used for other purposes, then the requirements and specifications may be different from the ones described in this document.

For more information, contact Stäubli www.staubli.com/electrical

Requirements for personnel

Only an electrician or electrically instructed person may assem-ble, install, and commission the system.

An electrician is a person with appropriate professional training, knowledge, and experience to identify and avoid the dangers that may originate from electricity. An electrician is able to choose and use suitable personal protective equip-ment.
An electrically instructed person is a person who is instructed or supervised by an electrician and can identify and avoid the dangers that may originate from electricity.

Prerequisites for installation and assembly

NEVER use an obviously damaged product.
ONLY tools and procedures approved by Stäubli shall be used.

Safe assembly and mounting

Live parts can remain energized after isolation or disconnection

ONLY Install the product when the photovoltaic array or -string is de-energized.

Mating and disconnecting

ALWAYS de-energize the photovoltaic system before mating and disconnecting the connectors.
NEVER disconnect the connectors under load.
NEVER connect male or female part of Stäubli connector with the connectors of other manufacturers.

Do NOT modify NOR repair component

Mount connector only once.
Do NOT modify connectors after assembly.
Replace defective connectors.

Tools required

PV-MS-PLS/2, Order No. 32.6058 or
PV-MS-MC4-EVO, Order No. 32.6066

Note:
Operating instructions MA270, www.staubli.com/re- downloads.html

Plugging and unplugging

Plugging
Plug the parts of the connector together until they click in place.Check that they have engaged properly by pulling on the connector.

Unplugging
To disconnect the plug connection, unlock the locking clip with the tool PV- MS-PLS/2 or PV-MS-MC4-Evo and pull the connector apart.

Options/Accessories
Unplugged connectors must be protected from contamination with a sealing cap.

For socket:
PV-BVK4, order No.32.0716

For plug:
PV-SVK4, order No.32.0717

Example of parallel connections with branch connectors

STUBLI-MA292-Branch-Connector-FIG-6

Attention:
When installing modules connected in parallel, make sure that the strings are connected correctly!

Attention:
When connecting the connectors, it must be ensured that the rated data (current carrying capacity and rated voltage) of the branch connectors are dependent on the connectors used in Tab. 1 or Tab. 2, page 5. Also observe the assembly instructions of the connectors connected to the MC4-Evo 2 branch connector.

Product Specification in relation to certified mating correlation
The current and voltage ratings, as well as the upper limiting tem-perature, is limited to the corresponding mating connector from Stäubli. For detailed specifications refer to Tab, 1 and 2 below.

Tab. 2 UL	MC4	MC4-Evo 2

Type

| PV-KST4/xy-UR| PV-KST4-EVO 2/-UR; PV-KST4-EVO 2A/
PV-KBT4/xy-UR| PV-KBT4-EVO 2/-UR; PV-KBT4-EVO 2A/
Tension assignée UL Rated Voltage UL| DC 1500 V| DC 1500 V

Courant assigné UL Rated current UL

Note (Tab. 2):
The ampacity rating of these products is limited based on the smallest used wire diameter per the National Electrical Code (NEC) requirements for outdoor applications considering the correction factor.

Notes on installation

Note:
The MC4-Evo 2 branch connectors feature a hole in the middle of each component. This hole could be used to fix the connector using cable ties.

Note:
In case the connector is to be used in low-voltage DC applications other than those in a photovoltaic array, please consult the information as provided in the Stäubli Technical Description Report. Link

General notes on installation:

Unmated connectors must be protected from environmental impact (moisture, dirt, dust, etc.) with sealing caps (socket order no. 32.0716; plug order no. 32,0717).
Do not mate contaminated connectors.
Connectors must not come into contact with any chemicals.

Contaminated/damaged connectors

Do not allow connectors to be contaminated by the environ-ment (e.g., soil, water, insects, dust).
Do not allow the connector to be contaminated on its surface (e.g., stickers, paint, heat shrink tubing).
Do not allow the connector is directly on the roofing surface.
Do not allow the connector is at the lowest point of the cabling where water can collect.
Do not allow the connector is in standing water.
Do not allow that cable ties to be mounted directly on the connector body.

Mechanical stress

Check that the connectors are not subjected to a permanent mechanical tensile load or vibration.
Connectors shall not be under strain from cable management.
Ensure that the locking clips are not subjected to excessive mechanical force.

Note for transportation and repacking:
Ensure that the locking clips are not subjected to excessive mechanical force.

Technical Data

Type designation PV-AZB4-EVO 2-UR PV-AZS4-EVO 2-UR
Rated voltage DC 1500 V
Test voltage 8 kV 3)
Rated current (IEC) 60 A 1)
Rated current (UL) 50 A 2)
Rated impulse voltage 16 kV
Ambient temperature range (IEC) -40 °C … +85 °C
Ambient temperature range (UL) -40 °C … +90 °C
Transportation/storage temperature range -40 °C … +60 °C
MOT max. operating temperature (UL) +90 °C
Transportation/storage relative humidity < 70 %
Upper limiting temperature 115 °C 1)
Degree of protection, mated IP65/IP68 (1 m,1 h)
Degree of protection, unmated IP2X
Overvoltage category/Pollution degree CAT III/3
Contact resistance of plug connectors < 0.5 mΩ
Locking system Locking type
Safety class II
Contact system MULTILAM
Contact material Cuivre , étamé/Copper, tin plated
Insulation material PA
Flame class UL94-V0
TÜV Rheinland certified according to IEC 62852:2014/AMD1:2020 R 60149724
UL certified according to UL6703 E343181
Compatible with connector type Original MC4 cable connectors Original MC4-Evo 2 cable connectors
Max. operating altitude above sea level 5000 m; AK 60159400
Temperature Level according to IEC TS 63126 Level 2; AK 60158914

CE declaration of conformity

The current and voltage ratings, as well as the upper limiting temperature, are limited to the corresponding mating connector from Stäubli. For detailed specifications refer to Tab. 1, page 5.
The current and voltage ratings, as well as the upper limiting temperature, are limited to the corresponding mating connector from Stäubli. For detailed specifications refer to Tab. 2, page 5. Engineering considerations: Application-associated current ratings have to be verified in the product’s end-use and shall not exceed the maximum operating temperature of the MC4 Evo 2 branch connector.
Rated voltage 1000 V and test voltage 6 kV with mated MC4 connector; 1500 V and test voltage 8 kV with mated MC4-Evo 2 connector.

Stockbrunnenrain 8 4123 Allschwil/Switzerland