High And Low Voltage Switchgear Power

The main secondary components commonly used in high and low voltage switchgear cabinets (also known as secondary equipment or auxiliary equipment refer to low voltage equipment that monitors, controls, measures, adjusts and protects primary equipment). The following equipment is common: relays, Watt-hour meter, ammeter, voltmeter, power meter (as shown), power factor meter, frequency meter, fuse, air switch, transfer switch, signal lamp, resistance, button, microcomputer integrated protection device, etc.

Five anti-high and low voltage switchgear

1 After the vacuum circuit breaker trolley of the high and low voltage switchgear is closed at the test position, the trolley circuit breaker cannot enter the working position. (To prevent closing with load)

2 When the grounding knife of the high and low voltage switchgear is in position, the trolley circuit breaker cannot enter the working position and close. (Prevent closing with ground wire)

3 When the vacuum circuit breaker of the high and low voltage switch cabinet is closed, the front and rear doors of the cabinet are locked with the machinery on the grounding knife and the cabinet door. (Prevent accidentally entering the live interval).

4 The vacuum circuit breaker of the high and low voltage switchgear is closed during operation, and the grounding knife cannot be closed and put in. (Prevent live connection ground wire)

5 The vacuum circuit breaker of the high and low voltage switchgear cannot withdraw from the working position of the trolley circuit breaker when the operation is closed. (Prevent broaching brake with load)