Medium and low voltage switch test device

Medium and low voltage switch test device

1.Comprehensive test cabinet for vacuum contactors and circuit breakers

2.Mining switch comprehensive monitoring device

3.High current generator

4.Test resistance box

II design standards
1) 3GB14048.1-2006 IEC60947.1-2001General Principles for Low Voltage Switchgear and Control Equipment
2) GB7251.1-2005 IEC60439-1-1999Low voltage switchgear and control equipment - Part 1: Types
Complete sets of equipment for type testing and partial type testing
3) GB11022-1999 IEC60694:1996Common Technical Conditions for High Voltage Switchgear and Control Equipment Standards
4) GB13539.1-2008Part 1 of Low Voltage Fuse:Basic requirements
5) MT111-2011Mining explosion-proof low-voltage AC vacuum electromagnetic starter
6) MT/T943-2005Mining low-voltage AC soft starter
7) MT871-2011Mining explosion-proof low-voltage AC vacuum feeding switch
8) JB8739-1998Mining explosion-proof high-voltage distribution device
9) MT/T1048-2007Mining explosion-proof low-voltage reactive power terminal compensator
10)MT/T1049-2007Explosion proof low-voltage electricity meter box for mining use
11)GB8286-2005Mining explosion-proof mobile substation
12)MT/T1041.1-2007Technical Conditions for Electrical Speed Control Device of Coal Mining Machine Part 1 Part: General Technical Requirements
13)MT/T1041.2-2008Technical Conditions for Electrical Speed Control Device of Coal Mining Machine Part 2 Part: Variable frequency speed regulation device
14)JB6312-92Comprehensive device for mining explosion-proof coal drill transformer
15) MT/T1123-2011Mining explosion-proof lighting signal comprehensive protection device

2、 Function Overview

Suitable for overload, short circuit, leakage locking, leakage action of low-voltage explosion-proof switchgear1KResistance leakage time test, leakage compensation rate test and other characteristic detection and inspection, while providing output of zero sequence voltage and zero sequence current,And it also has the ability to test the leakage protection function and leakage action time of high-voltage distribution equipment. The test bench is equipped with inspection capabilitiesQBZTheQJZTheKBZTheBKDTheBGPThe test bench has the ability to test high and low switches of the same series, and has three-phase capability1140V/660V/380V/100V/36V、 0～3500VadjustableTest power supply with leakage resistance adjustment output function.This test bench completes the testing of overload, short circuit, phase failure, leakage and other protection performance parameters for all switch body tests according to the factory test items specified in the explosion-proof electrical professional standards. It also provides the required test voltage, low voltage high current, leakage resistance, leakage capacitance for the overall protection performance test of the switch, and can meet the three-phase synchronous testing of electromagnetic starters and feed switches, vacuum degree testing of switch tubes, and contactor action characteristic testing.

III Scope of Application

The product is suitable for all manufacturers and models of switches for medium and low voltage switches and individual protectors in mining, such as combination switches, feed switches, starters, soft starters, lighting comprehensive protection, coal-fired drilling comprehensive protection, etc. It meets various electrical function tests and protection tests in accordance with national standards.

1)ZBZTheZBXThe testing of electronic protection plugs for series electric drills and lighting signal protection devices is applicable to all manufacturers and models.
2)All switches undergo performance tests for low voltage high current overload, short circuit, and phase failure protection, as well as current parameter tuning
Ding.
3)Three phase synchronous detection of vacuum contactors and circuit breakers.
4)Measurement of vacuum degree (withstand voltage value) of vacuum contactor switch tube.

4 Technical Specifications
1Power supply: three-phase four wire380V，

Three phase test power supply capacity5kVAOutput: Three phaseAC0-3500VAdjustable;

The protector outputs multiple sets of voltages simultaneously, such as

DC -5V--+5V，-12V--+12V，-15V---+15V，0-24VAdjustable,

AC5V，9V，12V，24V，36V，48V，50V，127V，220VAt least two sets are adjustable.
2Current grading measurement: single-phase0-9000AAdjustable and precise 0.5 level
3Long term current:2000A(Single phase);
4The maximum short-term output current is9000A(2s)；
5The setting range of leakage resistance is 0～145K；
6The1KLeakage current measurement range: 0～2000mA
7Simulate insulation resistance: 0～99.9KΩ
8The range of the millisecond timer is999.999s, Minimum Timing1ms;
9Zero sequence voltage output0～127V;
10Zero sequence current output0～20A.
11Simulate ground capacitance:0.22μ f/Xiang0.47μ f/Xiang1.0μ f/Phase;
12Scope of three-phase synchronous testing:0—99.9msIncluding action time, synchronous opening and closing time, contact bounce frequency, and accuracy 0.1%, Resolution0.1 ms.
13Test range for opening and closing time:0—99.9ms.
14Automatic testing of vacuum contactor and starting circuit resistance, testing range20mΩ —20KΩ ,resolution1 mm.
15Using high voltage method to determine the vacuum characteristics of vacuum switch tubes.
16Measurement of technical parameters for overload, short circuit, phase failure, and leakage lockout of the switch body comprehensive protector, and control range for action time timing:0.001s—9999.9s.
17、Capacitor compensation current: 0～2000mA；
18DC stabilized power supply: dual circuit output0-30V/3Aadjustable
19Vacuum degree (pressure resistance) test:2KVA 0-50KV,continuously adjustable
Yangzhou Guohua Electric Co., Ltd