Low-voltage vacuum circuit breaker with electric isolation for feed switch

Abstract

The invention provides a low-voltage vacuum circuit breaker with electric isolation for a feed switch, which is used for solving a technical problems of inconvenience in maintenance, easiness in causing dangerous accidents and the like caused by separated installation or long distance between an isolation switch and a vacuum load switch in the conventional mining low-voltage power supply equipment. The explosion-proof vacuum circuit breaker comprises an explosion-proof shell, wherein an isolating switch and a vacuum circuit breaker body are arranged in the explosion-proof shell, the bottom ofthe vacuum circuit breaker body is fixed to a bottom plate of the explosion-proof shell, a connecting plate is arranged at the top of the vacuum circuit breaker body, an executing mechanism is installed on the connecting plate, and the isolating switch is fixed to one side of the connecting plate and connected with the executing mechanism; the actuating mechanism and the vacuum circuit breaker areboth connected with the control unit, and the isolating switch and the vacuum circuit breaker are respectively connected with a manual input unit. The system has an automatic control mode and a manual control mode, more convenient and safer maintenance of mining electricians is achieved, and meanwhile cost of mining underground low-voltage power distribution is reduced; the device is compact in overall structure, small in size, safe, reliable and convenient for line maintenance, and has an isolation function.

Description

technical field [0001] The invention relates to the technical field of underground vacuum power distribution for mines, in particular to a low-voltage vacuum circuit breaker with electric isolation for a feed switch. Background technique [0002] The flameproof feed switch of the low-voltage vacuum circuit breaker combination device with isolation function is mainly responsible for the power supply, distribution and line protection of the underground low-voltage line. With the continuous improvement of the mechanization and automation of coal mine production, electrical equipment is widely used, and the underground power supply capacity Increasingly, higher requirements are put forward for the reliability and safety of the underground power supply system. With the continuous improvement of automation level, the stable and reliable operation of underground explosion-proof electrical equipment is becoming more and more important. The motors such as transport winch, belt convey...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems that the isolating switch and the vacuum load switch are installed separately or far away from each other in the existing mine low-voltage power supply equipment, which leads to inconvenient maintenance and dangerous accidents, the present invention proposes a low-voltage vacuum switch with electric isolation for the feed switch. The circuit breaker has two control modes, automatic and manual, which makes mine electrician maintenance more convenient and safe, and at the same time reduces the cost of mine underground low-voltage power distribution

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