Current transformers (CT) are widely used in power systems for one measurement and control. During normal operation, the secondary side of the transformer is in an approximate short-circuit state and the output voltage is very low. In the operation, if the secondary winding is open, or the primary winding flows abnormal current (such as lightning current, resonant overcurrent, capacitor charging current, inductor starting current, etc.), it will generate thousands of volts or even tens of volts on the secondary side. Voltage. This not only causes damage to the insulation of the secondary system, but also causes the transformer to be over-excited and burned, and even endangers the safety of the workers. The CT secondary overvoltage protector can effectively prevent accidents caused by secondary open circuit of the current transformer.
Intelligent processing to prevent manual misoperation
Strong anti-interference ability, no misoperation due to interference