Difference between high and low voltage complete equipment circuit breaker:　　　

1. The high-voltage load switch can be disconnected with a load and has a self-extinguishing function, but its breaking capacity is very small and infinite.

2. High-voltage disconnectors are generally not able to be disconnected with a load. There is no arc-extinguishing cover in the structure, and there are also disconnectors that can break the load, but the structure is different from the load switch, which is more complicated.　　

3. Both the high-voltage load switch and the high-voltage isolating switch can form a clear disconnection point. Most circuit breakers do not have the isolation function, but also have the isolation function of most circuit breakers.

4. The high-voltage isolation switch does not have a maintenance function. The maintenance of the high-voltage load switch is usually to add fuse maintenance, as long as the quick-break and over-current

5. The breaking capacity of the high-voltage vacuum circuit breaker can be made very high in the manufacturing process. The second is to rely on adding current transformers and secondary equipment for maintenance. Can have short-circuit maintenance, overload maintenance, leakage maintenance and other functions.

Definition of high and low voltage complete equipment circuit breaker:

High-voltage vacuum circuit breaker: A high-voltage circuit breaker can not only cut off or close the no-load current and load current in the high-voltage circuit, but also cut off the overload current and short-circuit current through the maintenance and installation of the relay when the system breaks down. The arc-extinguishing structure and sufficient current interruption ability can be divided into: oil circuit breakers (more oil circuit breakers, less oil circuit breakers), sulfur hexafluoride circuit breakers (SF6 circuit breakers), high voltage vacuum circuit breakers, compressed air circuit breakers, Such as.

High-voltage isolation switch: The high-voltage isolation switch is an important switching device in the electrical system of power plants and substations. It needs to be used in conjunction with high-voltage circuit breakers. The secondary function is to ensure the safety of high-voltage electrical appliances and installation during maintenance tasks, and isolate the voltage Can not be used to cut off, load current and short-circuit current, it can only be used for certain switching operations without weak arc, that is to say it does not have arc extinguishing function; according to the location of the device, it is divided into indoor and The outdoor type is divided into single pillar type, double pillar type and three pillar type according to the number of insulating pillars. Each voltage level has optional equipment.

High-voltage load switch: A high-voltage load switch is an electrical appliance whose function is between a high-voltage circuit breaker and a high-voltage disconnector. The high-voltage load switch is often used in series with a high-voltage fuse; it is used to control a power transformer. The high-voltage load switch has a complicated arc extinguishing installation, because it can make and break a certain load current and overload current. However, it cannot cut off the short-circuit current, so it is usually used in series with a high-voltage fuse and uses the fuse to stop short-circuit maintenance.