High and low voltage distribution cabinets are electrical equipment used for output power, distribution, and energy conversion. Used for controlling equipment used in power generation, transmission, distribution, energy conversion, and energy consumption. And it has reliable five prevention functions. At this point, some people may wonder, what are the five defenses of this high and low voltage distribution cabinet? What are the five defenses? Below, Wuxi Shengminghua editor will take us to learn more.

In fact, the high and low voltage distribution cabinet enters the main control switch of the cabinet from the external line, and then enters the sub control switch, which is set according to various needs. For example, instruments, magnetic switches for electric motors, touch sensors, etc. There are two types of high and low voltage distribution cabinets, one is high voltage switchgear and the other is low voltage switchgear, each with a separate equipment distribution room.

1. The vacuum circuit breaker and grounding knife of the high and low voltage distribution cabinet are closed thick in the test direction, and the trolley circuit breaker cannot enter the operation direction. Its effect is to avoid closing with composite switches.

2. When the vacuum circuit breaker and grounding knife of the high and low voltage distribution cabinet in China are closed, the grounding knife cannot be closed. The effect is to avoid closing the circuit with a grounding wire.

3. When the vacuum circuit breaker inside the high and low voltage distribution cabinet is closed during operation, it cannot exit the working position of the trolley circuit breaker. The rear door of the cabinet is locked with a mechanical grounding knife and the cabinet door. The effect is to avoid accidentally entering the charged distance.

4. When the vacuum circuit breaker in the high and low voltage distribution cabinet is closed, the grounding knife cannot be put into operation, and the mechanical and cabinet door on the grounding knife of the cabinet back door is locked tightly. The effect is to avoid grounding wires.

5. After the vacuum circuit breaker in the high and low voltage distribution cabinet is closed in the test position of the trolley, the trolley circuit breaker cannot enter or exit the working position. The effect is to avoid pulling the knife switch under load.