What tests should be done before and after the circuit breaker switch?

What tests should be done before and after the circuit breaker switch?

Circuit breakers are divided into oil circuit breakers, air circuit breakers, sulfur hexafluoride circuit breakers and vacuum circuit breakers according to the type of medium. Let’s take a look at the electrical test items to be done before and after the circuit breaker is overhauled.

Test items before circuit breaker overhaul:

(1) Opening and closing time and speed measurement;

(2) Conductive loop resistance measurement;

(3) Measure the contact finger pressure of opening and closing;

(4) Measure the positioning clearance of the closing buffer and the compression stroke of the piston;

(5) Measurement of water content and leakage of sulfur hexafluoride gas.

GDZK-V真空开关真空度测试仪

 

GDZK-V vacuum switch vacuum degree tester
Test items after short circuit breaker overhaul:

(1) Vacuumize and fill with sulfur hexafluoride gas when the vacuum is good;

(2) Carry out partial bandage leak detection or buckle cover leak detection and measure the moisture content of sulfur hexafluoride gas;

(3) Measure comprehensive parameters such as opening time, three-phase synchronicity, operating voltage, and energy storage time;

(4) Record the speed curve of the circuit breaker;

(5) Carry out overall and partial insulation tests.


Post time: Jan-05-2023

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