Technical Support

Working principle and operation advantag

The ultra-low frequency voltage withstand test is characterized by no damage to the tested cable, an...


Troubleshooting of loop resistance teste

1、Fault phenomenon: the loop resistance tester is connected to 220V AC power supply, the fan has no ...


Principle of circuit breaker tester

Circuit breaker, also known as high-voltage switch, is an important part of the stable operation of ...


Main uses of transformer capacity and em

In terms of policy, China's power system implements a two-part electricity price: in addition to...


Characteristics and application scope of

1.Characteristics of series resonanceThe circuit is purely resistive, and the terminal voltage is in...


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