In real life, there are often things that we don't know. For example, many people don't know what a high pressure switch is, let alone which tests to measure a high pressure switch. Let's talk about the high pressure switch in detail. The test content of , if you don't understand it, just collect it!

Vacuum degree test of vacuum bubble
The core of the vacuum circuit breaker is the vacuum bubble. When the circuit breaker is running, the vacuum in the vacuum bubble will leak to varying degrees, which will seriously cause the circuit breaker to fail to extinguish the arc and cause serious power accidents.
The vacuum tube "Electricity Test Regulations" requires 1.33*10-3Pa to be qualified, and the manufacturer leaves the factory according to 1.0*10-4Pa. If the air volume is 6.6*10-2Pa measured by a special instrument, it cannot be used.
AC withstand voltage test of fracture
The AC withstand voltage test of the circuit breaker is necessary to measure in the handover test, diagnostic test and routine test. The requirement for the power supply is positive sine wave, so it can effectively find the insulation defects. It is an effective and direct way to verify the insulation strength of the circuit breaker. The purpose is to determine the quality and dielectric strength of the circuit breaker installation, which is generally measured by an oil-immersed test transformer.
Fracture loop resistance test
The loop resistance of the port is measured with a loop resistance tester with a test current of not less than 100A and an accuracy of not less than 1.0. It is measured after the handover test, routine test, diagnostic inspection and fault occurrence. If the measured loop resistance test exceeds the error range , the circuit breaker can be opened and measured at closing. If there is a transformer in and out of the measurement circuit, the secondary circuit should be disconnected or the secondary side of the current transformer should be short-circuited during measurement.
Mechanical characteristics test of switches
The switch mechanical characteristic test is to check the comprehensive performance of the high pressure switch, including three-phase synchronization, opening and closing time, and three-phase contact opening and closing speed and other parameters.
The mechanical characteristics of the switch are measured under the conditions of handover test, routine test and diagnostic test, using a high pressure switch dynamic characteristics tester with not less than 3 time channels and a time accuracy of not more than 0.1ms, and the test results are phase-to-phase closing The different periods are not greater than 5ms, the interphase opening time is not greater than 3ms, the different periods of closing between the same-phase fractures are not greater than 3ms, and the different periods of opening between the same-phase fractures are not greater than 2ms.
This is the end of the test about the high pressure switch. If you have any doubts about the problem, please call our company and we will solve it in time.