KYN28 high-voltage switchgear refers to an electrical product mainly composed of high-voltage circuit breakers, grounding switches, and transformers. The voltage level is 12kv, which is commonly used in laboratory electrical engineering or factory electrical engineering. In the power system, it plays the role of on-off, control or protection in power generation, transmission, distribution, power conversion and consumption. Shanghai laboratory construction experts will explain the structure and operation of the high-voltage cabinet in detail.

Five design advantages of high-voltage switchgear:

① Effectively avoid closing on load

②Effectively avoid entering the interval with dots by mistake

③Effectively avoid closing with ground wire

④Effectively avoid live grounding

⑤ Effectively avoid the load broach

Laboratory electrical engineering: KYN28 high-voltage cabinet structure

The high-voltage metal-enclosed switchgear is mainly composed of a cabinet and a handcart:

The cabinet is separated into four independent compartments by metal partitions: bus compartment, circuit breaker trolley compartment, cable compartment and relay instrument compartment.

Handcarts are divided into circuit breaker handcarts, metering handcarts, isolation handcarts, etc. according to different purposes. Handcarts with the same specifications can be freely interchanged. Handcarts have test positions and working positions in the cabinet, and each position has a separate In-place device to ensure reliable interlocking.

Laboratory electrical engineering: operating specifications for high-voltage cabinets

1. When the high-voltage circuit device is in the working position, the secondary plug is locked. To ensure that each interlocking device is safe, reliable and not damaged, it must be operated in strict accordance with the interlocking prevention misoperation procedures.

2. Regarding the circuit breaker handcart: when the circuit breaker handcart is in the test or working position, the circuit breaker can be closed and opened; when the circuit breaker is closed, in order to avoid mis-pull with load or infer the circuit breaker, It cannot be moved at this time; when the circuit breaker trolley is in the test position, the grounding switch can be closed.

3. Regarding the grounding switch: When the switch is in the open position, neither the lower door nor the rear door can be opened, and the circuit breaker trolley can be moved from the test position to the working position.

The above are the main points of knowledge about high-voltage cabinets in laboratory electrical engineering. In the future concept of laboratory electrical engineering, electrical will not only be limited to electrical and electronic systems, all engineering activities related to photons and electronics belong to electrical engineering. For more professional knowledge, click "Technical Support" to view.