Emergency cut-off device

Abstract

The invention discloses an emergency cut-off device, which comprises a shell, a circuit breaker and a controller, wherein the connecting contacts of the circuit breaker are installed in the shell, heat dissipation openings are formed in the upper side and the lower side of the shell, protective covers are installed on the heat dissipation openings, telescopic rods are installed on the inner sides of the protective covers, sealing strips are installed in the connecting areas of the protective covers and the heat dissipation openings, an electromagnetic telescopic device is installed in the shell, the bottom of the telescopic rod is installed in the telescopic device, a temperature detection device is installed in the shell, an on-off detection switch is installed on the circuit breaker, and the controller is installed on the side face of the shell and connected with the electromagnetic telescopic device, the on-off detection switch and the temperature detection device. By means of the controller, automatic isolation from the outside can be achieved under the condition that circuit faults are avoided,and heat dissipation can be conducted automatically under the condition of normal work when heat generated by electronic elements cannot be dissipated in time, so that the situation that the service life of internal elements of the cutting-off device is affected is avoided.

Description

technical field [0001] The invention belongs to the technical field of electric power and relates to an emergency cut-off device. Background technique [0002] In the generation, transmission and use of electricity, power distribution is an extremely important link. The power distribution system includes transformers and various high and low voltage electrical equipment, and the low voltage circuit breaker is an electrical appliance with a large amount of use. [0003] The emergency cut-off device refers to the switching device that can close, carry and break the current under normal circuit conditions and can close, carry and break the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. Eme...

AI Technical Summary

Problems solved by technology

[0005] In order to avoid damage to the internal components of the emergency shutdown device caused by circuit failure, the emergency shutdown device is designed as a fully enclosed shell structure. For the emergency shutdown device with networking function, the heat generated by the electronic components cannot be dissipated in time, and it is easy to burn out the emergency shutdown device. The internal components of the cut-off device affect the service life;

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