Outdoor high-voltage vacuum circuit breaker

Abstract

An outdoor high-voltage vacuum circuit breaker comprises a stabilized voltage supply, a high-voltage vacuum circuit breaker body, a standby high-voltage vacuum circuit breaker, a prompt circuit, a time circuit, a contact detection circuit, a temperature detection circuit, an arc discharge detection circuit and a time delay circuit. The arc discharge detection circuit and the temperature detection circuit are respectively matched with a photoresistor and a temperature switch, the photoresistor is arranged at the outer side end of an arc extinguishing chamber of the high-voltage vacuum circuit breaker body, and the temperature switch is arranged at a heating part of the high-voltage vacuum circuit breaker body; the stabilized voltage supply, the time circuit, the contact detection circuit, the prompt circuit, the temperature detection circuit, the arc discharge detection circuit and the time-delay circuit are installed in the electric cabinet and are electrically connected with the high-voltage vacuum circuit breaker body and the standby high-voltage vacuum circuit breaker. The performance of the contact of the high-voltage vacuum circuit breaker body can be detected, and the temperature and whether an arc discharge phenomenon occurs can be detected in real time; and when overtemperature, arc discharge and poor contact performance occur, related personnel can be prompted by a short message for maintenance.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to an outdoor high-voltage vacuum circuit breaker. Background technique [0002] Outdoor high-voltage vacuum circuit breaker is a widely used electrical equipment, which mainly plays the role of switching power supply and safe power supply. After the vacuum circuit breaker has been used for a long time, due to various reasons (ablation, etc.), the resistivity of the power contacts may increase, that is, the electrical conductivity will deteriorate; there are also problems such as quality or long service life. Arcing or overheating will occur, which will cause great safety hazards to the safe power supply. To sum up, it is particularly necessary to provide a vacuum circuit breaker that can automatically detect the performance of the contacts, disconnect the load in time when arcing or overheating occurs, and prompt the management personnel to perform maintenance or repl...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages that the existing vacuum circuit breaker does not have a contact performance self-checking device due to the limitation of the structure, and in the event of arcing or overtemperature, it cannot prompt the management personnel to maintain or replace it in time, and cause potential safety hazards to the power supply. The invention provides a high-voltage vacuum circuit breaker body and a spare circuit breaker. Under the joint action of relevant mechanisms and circuits in the application, the contact resistance of the high-voltage vacuum circuit breaker body can be detected at regular intervals during non-peak periods of power consumption. It can also detect in real time whether there is arcing and over-temperature in the power supply of the high-voltage vacuum circuit breaker body. When arcing and over-temperature occur, it can automatically switch to the backup circuit breaker for safe power supply, and it can also send SMS reminders immediately An outdoor high-voltage vacuum circuit breaker that can be maintained or replaced by management personnel, thereby effectively ensuring safe power supply

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