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Dongli Electric

Reasonable electric energy device and clearance of high and low voltage switchgear


Release time:

2020-08-25

High and low voltage switchgear in the process of work is mainly circuit breaker-based electrical equipment, refers to the manufacturer according to the requirements of the main electrical wiring diagram. The relevant high and low voltage electrical appliances and busbars, current-carrying conductors, insulators, etc. are assembled in closed or open metal cabinets as devices for receiving and distributing electrical energy in the power system.

High and low voltage switchgearIn the process of work is mainly based on the circuit breaker electrical equipment, refers to the manufacturer according to the requirements of the main electrical wiring diagram. The relevant high and low voltage electrical appliances and busbars, current-carrying conductors, insulators, etc. are assembled in closed or open metal cabinets as devices for receiving and distributing electrical energy in the power system.

High and low voltage switchgearElectrical products that play the role of on-off, control or protection in power generation, transmission, distribution, electric energy conversion and consumption in the power system, and the voltage level is 3.6kV ~ 550kV. It mainly includes high-voltage circuit breaker, high-voltage automatic coincidence and segmenter, high-voltage operating mechanism, high-voltage isolating switch and grounding switch, high-voltage load switch, high-voltage explosion-proof distribution device and high-voltage switch cabinet.

High and low voltage switchgearThe cabinet is spacious, the internal space is large, the gap is reasonable and safe, and it has the characteristics of convenient installation and maintenance, and reliable operation. The main circuit scheme is complete and can meet the needs of various power supply and distribution systems. It has five functions to prevent misoperation:

1. Prevent the load opening and closing of the isolating switch.

2. Prevent mistakenly entering the charged interval.

3. Prevent false opening and closing of circuit breakers.

4. Prevent live grounding wire from hanging.

5. Prevent closing with grounding wire.

High and low voltage switchgearThe main components are circuit breakers, isolating switches, load switches, operating mechanisms, transformers and various protection devices, etc. The main function of the switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and electrical energy conversion in the power system.

High and low voltage switchgearThe structural characteristics are as follows:

1. The whole cabinet adopts assembled structure and is installed with modulus hole. The parts have strong versatility, good applicability and high degree of standardization.

2. The upper part of the cabinet is a bus room, the front part is an electrical appliance room, and the rear part is a cable inlet and outlet room. Each room is isolated by steel plate or insulating plate to ensure safety.

3. The door of the drawer compartment of the MCC cabinet is mechanically interlocked with the operating handle of the circuit breaker or isolating switch. The door can only be opened when the handle is in the broken position.

4. The receiving switch, contact switch and drawer of MCC cabinet have three positions: on position, test position and off position.

5. The bus bridge can be installed on the top of the switch cabinet according to the power receiving needs.