(1) the working voltage of the control circuit of ZW43 high voltage circuit breaker is divided into weak current and strong current. After the command is issued, the weak current command signal is converted into strong current signal through the intermediate strong and weak current conversion link and sent to the operating mechanism of the circuit breaker. The structure of the circuit between the intermediate switching link and the circuit breaker is the same as that of the high-voltage control. This weak electric control, in essence, is only arranged in the control panel (Taiwan) control equipment weak electric. Source: transmission and distribution equipment network
(2) the operating voltage of all circuits from the control equipment to the operating mechanism of the circuit breaker is weak. This kind of command signal transmission distance is relatively short, and the circuit breaker operating power is relatively large, it is not suitable for 220500kV substation.
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