JIANGSU SFERE ELECTRIC CO LTD SFR-M Series Low-Voltage Harmonic Suppression Reactive Compensation Module User Manual

: June 12, 2024
: JIANGSU SFERE ELECTRIC CO LTD

Table of Contents

1．Introduction
Model selection
Technical parameter
Installation and wiring
Operation
Panel description and measurement information display
Common problems and solutions
Ordering specification and contact method
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JIANGSU SFERE ELECTRIC CO LTD SFR-M Series Low-Voltage Harmonic Suppression Reactive Compensation Module User Manual

Thank you for choosing SFR-M series low voltage harmonic suppression reactive compensation module. In order to make it convenient for you to purchase and use the meter safely,correctly and efficiently, please read this manual carefully before using the product, and pay attention to several points as follows.

CAUTION：

Make sure only the qualified technicians perform the installation and maintenance;
Before performing wiring operation to the meter make sure the input signal andpowersupplies are switched off;
The proper voltage detecting device shall always be used to determine there is novoltagein each part of the meter;
The electrical parameters supplied to the meter shall be within the rated range;

The following conditions may result in damages or abnormal operation to the meter:

Voltage of auxiliary power supply goes beyond the range
Frequency of power distribution system goes beyond the range
Input polarity of voltage or current is incorrect
Removing or connecting the communication plugs with electricity;
Connecting terminal wires without following the requirements.

Please don’t touch the terminals when the meter is in operation!

1．Introduction

Compliance with standards
GB/T 15576-2008 Low voltage reactive power compensation assemblies GB/T 22582-2008 Power capacitors—Low-voltage power factor correction banksJB/T 9663－1999 Low voltage reactive power automatic compensation controller

Overview
SFR-M series low voltage intelligent power capacitor modules take two △type compensation capacitors or one Y type compensation capacitor as main body and are highly integrated with compound switch, microprocessor and other function modules. Due to their modularity structure,they have such advantages as small volume and easy maintenance. SFR-Mseries power capacitor modules are mainly used for reactive power compensation in the fields where harmonics are not very serious. They are suitable for local compensation, dispersion compensation and centralized compensation. This series of products adopt double zero-crossing switch technology to make sure there is no over voltage or high inrush current during capacitor switching soastopro long capacitor life and switch life. SFR-M series capacitor modules have many protection functions such as capacitor internal temperature protection, grid harmonic content protection, over current protection, over voltage protection and three phase unbalance protection which make them more reliable. This series of products adopt a using method of building blocks. If many capacitors are used, one of them will become the master automatically, and others will become slaves. Then a reactive automatic control system is built. If some of the slaves fail, theywill exitthe system automatically without influencing other slaves; if the master fails, it alsowill exit thesystem automatically, and then another new master appears and a new control systemisbuilt.Meanwhile, SFR-M series capacitor modules are integrated with some functions of power meterswhich can measure conventional electrical parameters of the power system.

Model selection

Diagram

Note:
total compensation for rated voltage 480V(P7) or 525V(P14), and separate compensationfor rated voltage 280V(P7) or 300V(P14)

Compensation mode	Capacity (kvar)	Remarks

Three phase total compensation

Table 1 Product model list (special specifications can be customized)

Technical parameter

Function| Technical parameter| Feature (accuracy)|
---|---|---|---

Measurement

Compensation operation

Host protection

| Over voltage| 1.2Un （can be set）
Under voltage| 0.8Un（can be set）
Harmonic exceeding| can be set

Local protection

| Over current| can be set
Over temperature| 55℃（can be set）
Unbalance| 50%（can be set, only for total compensation）

Control setting

| Control parameter| Target power factor, switching threshold, delay time etc.
Peripheral unit parameters| Current transformer ratio
Network interface| Pluggable data line, internal network protocol.

Mechanical installation

Installation and wiring

Outline dimension

Outline dimension| **Length （L)mm| ****Width (W)mm| ****Height (H)mm| Distance between fixing poles** mmΦ6
---|---|---|---|---
Total compensation series
SFR-M-2020-P7(14)| 430| 280| 290| 295×410
SFR-M-2010-P7(14)| 430| 280| 290| 295×410
SFR-M-1010-P7(14)| 430| 280| 290| 295×410
SFR-M-1005-P7(14)| 430| 280| 290| 295×410
SFR-M-0505-P7(14)| 430| 280| 290| 295×410
SFR-M-40-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-30-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-20-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-15-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-10-P7(14)| 370(430)| 280| 290| 295×350(410)
Separatecompensation series| | | |
SFR-M-30-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-20-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-15-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-10-P7(14)| 370(430)| 280| 290| 295×350(410)
SFR-M-05-P7(14)| 370(430)| 280| 290| 295×350(410)

Installation method
For good heat radiation, make sure horizontal distance between two modules is not less than 50mm, and vertical distance is enough for using screw driver. Usually three layers of modules can be installed in ordinary GGD cabinet （800mm1000mm2200mm）. One of the three layers contains three modules, so that three layers contain nine modules.

Accessories
The specification of pressing joints is 16mm2. It is used for 10～1616mm2 lines. Every total
compensation module is equipped with three joints, and every separate compensation module is equipped with four joints.

Plug gable data line is used to connect modules or module and other accessories for net working. There are three specifications which are 0.7-meter, 1.0-meter and 2.5-meter.0.7-meter line is used to connect two adjacent modules on same layer; 1.0-meter line is used to connect modules on adjacent layers; 2.5-meter line is used to connect controller module.2.5 meter line is also used to connect host cabinet and auxiliary cabinet in a same system. If customer needs plug gable data line with other length, please specify when ordering.

Secondary Current Transformer is an optional unit which is used for primary current (5A)sampling in bus line of incoming cabinet. The transformer is necessary when customer onlyuseSFR-M series low voltage harmonic suppression reactive compensation module. UsuallySFR-Mseries modules are defaulted to be equipped with reactive power compensationcontroller（ WGK-31-203), which make it not necessary to equip secondary current transformerstothemodule.

Pressing joint
Secondary current transformer
Plug gable data line

Typical wiring

Compensation module can be used alone. When it is used alone, it should be equipped with a secondary current transformer for each system. If there is no separate module in a system,single phase current transformer is suitable, otherwise, please equip three phase current transformer in that system. Current transformer is connected to Phase B current of incoming cabinet and any one of the modules in the cabinet. It is suggested to connect the current transformer to the module with smallest number.
Compensation module also can be equipped with controllers. If there is no separate compensation module in a system, WGK-31-203-G compensation controller is suitable, otherwise,please equip WGK-31-203-F compensation controller in that system. SFR-M series\ modules are connected with WGK-31-203 compensation controller by specialized plug gable data line. One WGK-31-203 controller can be connected up to32SFR-Mseries modules. Controller and capacitor modules can realize automatic networking by adopting internal protocol. Common System configuration and wiring diagram are shown in following diagrams.

Wiring diagram for total compensation module system with controller

Wiring Diagram

Wiring diagram for total compensation module and separate compensation module combined system with controller

Wiring diagram for total compensation module and separate compensation module combined system without controller

Operation

Using method of buttons on digital display panel
This interface is composed of the following three buttons. and buttons are used separately for switching menus and changing numbers; + combined is used for canceling an operation; is used for entering a menu andconfirmingan operation.

The method for change data at digital display interface is as follows.
button is used to select a bit which is the flashing one;
button is used to change the numbers from 0 to 9 at selected bit.

Enter and exit programming status
Enter programming status
In display interface, press button to enter password authentication interface. User can press or button to input the password (the user’s password is defaulted as 0001). After inputting the password, press button to enter programming interface.
Note: if the inter face does not change after pressing button, that means the password is wrong.

After return to first level menu of programming, press + at the same time, and then SAVE-YES appears. Now there are three options.

Press button to save modified data and exit;
Press + at the same time to stay in programming status;
Press button to change to SAVE-ＮＯ, and then press button to exit with out saving modified data.

Programming examples

The following operation process shows and example for system setting.
The following operation process shows and example for setting internal network

Note: there should not be same network addresses in a control system.
The following operation process shows an example for module switching parameters(Usuallyit is not needed to set these parameters only if there is no controller.)

Panel description and measurement information display

Product Overview

C1 and C2 indication lights show the switching and running status of two capacitor modules; if Fault indication light is on, that means the power capacitor module is in protection status.
Three-row code segment LCD shows measured electrical information such as present status of power capacitor module, capacity, temperature and electrical parameters.
Dial switch is composed of Test and Work. Test is used to simulate switch in and cut off of power capacitor module through compensation controller; Work means the capacitor module working normally.
Three buttons are used for switching between display interfaces and programming.

Display information
button is used to switch between different interfaces. The information of each inter face is shown in the following list.

Interfaces	Content	Description

Host-slave mode, No. and quantity of capacitor modules, total module quantity

| In first row , HoSt shows this module is the host module; SLAV shows this module is a slave module;In econd row, the number following CH shows the No. of module;In third row, the number following AL shows the totoal quantity of modules in network. Note: if the host is in this interface, press and buttons togetherto realize networking.

Capacity

| |

The left picture shows the capacity of module.

Temperature

| | The left picture shows the temperature of two compensation modules.
| | The left picture shows the temperature of separate compensation module.

Three phase current

| |

The left picture shows the value of current in compensation status.

Three phase voltage

| |

The left picture shows the value of bus line voltage.

Input current

| |

The left picture shows the current of incoming cabinet (only effective in host module).

Active power

| |

The left picture shows the active power of incoming cabinet (only effective in host module).

Reactive power

| |

The left picture shows the reactive power of incoming cabinet (only effective in host module).

Total apparent power

| |

The left picture shows the total apparent power of incoming cabinet (only effective in host module).

Power factor

| |

The left picture shows the power factor of incoming cabinet (only effective in host module).

Harmonic content

| |

The left picture shows the voltage and current harmonic content of incoming cabinet (only effective in host module).

Protection alarm

| | Er01：Over voltage protection, return to normal automatically;Er 02：Under voltage protection, return to normal automatically;Er 03：Over current protection, need to be reset;Er 04： Over temperature protection for first module, return to normal automatically;Er 05： Over temperature protectionfor second module, return to normal
| | automatically;Er 06： Three phase unbalance protection, need to be reset;Er 07： Harmonic voltage protection THDu%, return to normal automatically;Er 08： Harmonic current protection THDi%, return to normal automatically;Er 09：Internal fault, need to bereset.

Common problems and solutions

Automatic switch in after power on
The compound switch inside a module is defaulted to be open, but it may become closed because of vibration in transportation. In this case, user needs to connect the module to grid which can bare the current of that module to make it reset.

External indication light on after module power on; External indication light off after modulepower off.
First, please confirm the type of module. If the module is total compensationtype, thecommon end of external indication light should be connected to Ub; if the moduleisseparatecompensation type, the common end of external indication light should be connected toUn. Second, the connection of external indication light is right. In this case, user needstocheckthe phase sequence of wires connected to the module and make it the same withtheprinteddiagram on module.
Note: It is normal that the external indication light is in false light status.

Other abnormal situation.
Please contact our technical service department and describe the field situation clearly. Our technicians will provide solution according to your description. If the problem can not be solved after communication, we will send technicians to solve the problem at field.

Switching test
Switching tests are divided into two kinds which are simulation switching test and normal switching test according to switching effects. The difference between these two kinds of test sis that in simulation switching test, the capacitor module is not really switched in, so there is no large current, but in normal switching test, the capacitor module is switched in and there will be large current. Please select the testing method according to practical situation so as not to burn the wire or cause accidents.

Controller simulation switching test

Change the dial switch on the capacitor module to Test;
Control the switching of capacitor module through compensation controller. Meanwhiletheindication lights will react. If the indication light is on, that means the capacitor moduleisswitched in; if the indication light is off, that means the capacitor module is switched off.

Controller normal switching test

Change the dial switch on the capacitor module to Work;
Change the power factor of circuit. Controller will control the real switching of capacitor modules according to power factor. If the indication light on capacitor module and external in dication light are on, that means the capacitor module is switched in; if the indication light on capacitor module and external indication light are off, that means the capacitor module is switched off.

Ordering specification and contact method

Please write down the model of product in your order. There are default settings for each capacitor module. If you need other setting, please specify it in your order. The example of order is as follows, Model: SFR- MXD-2020/450
Other: External controller WGK-31-203-G

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