The distribution box is divided into power distribution box and lighting distribution box, which is the last level equipment of the distribution system. The distribution box is to assemble the switchgear, measuring instruments, protective appliances and auxiliary equipment in the enclosed or semi enclosed metal cabinet or on the screen according to the electrical wiring requirements to form a low-voltage distribution device. In normal operation, the circuit can be turned on or off by means of manual or automatic switch. In case of fault or abnormal operation, cut off the circuit or give an alarm with the help of the protection appliance. With the help of measuring instruments, various parameters in operation can be displayed, and some electrical parameters can be adjusted to prompt or send signals for deviation from normal working conditions. It is commonly used in each power generation, distribution and substation.

How to configure the tank switch of the primary and secondary distribution box

Level I: main switch with visible breakpoint (anti misoperation switch), main circuit breaker (air switch) divided into several visible breakpoint sub switches (anti misoperation switch), several leakage circuit breakers with zero ground bar

Secondary box: visible breakpoint main switch (anti misoperation switch), main circuit breaker (air switch) divided into several visible breakpoint sub switches (anti misoperation switch), several circuit breaker zero ground bar