Static contact socket of sulfur hexafluoride circuit breaker

Abstract

The invention relates to the technical field of electrical equipment, in particular to a static contact socket of a sulfur hexafluoride circuit breaker. The static contact socket is provided with a conical support part, the conical support part is connected with a protecting sleeve, a hole matched with a static arc contact is arranged at the conical support part, a shielding cover is fixedly connected to the static contact socket and provided with contact fingers, and a cylindrical surface matched with the contact fingers is arranged on the static contact socket. The static contact socket hasthe characteristics that the static contact socket has high support strength for the static arc contact and also facilitates gas flowing of the static contact socket, and the cooling and circulation functions of high-temperature gas is improved.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, and more specifically, to a static contact seat of a sulfur hexafluoride circuit breaker. Background technique [0002] The high-voltage circuit breaker is the most important switching device in the power system. In addition to breaking and closing the load current according to the operation needs under normal conditions, it must also be able to break short circuits up to tens of kiloamperes when a short circuit occurs in the power system. Current, sulfur hexafluoride self-energy circuit breaker is a kind of high voltage circuit breaker. Sulfur hexafluoride self-energizing circuit breakers include static contacts, moving contacts, static arcing contacts, moving arcing contacts, static contact seats, outlet plates and other related parts, of which the static arcing contacts and moving arcing contacts Arcing will occur when the circuit breaker breaks and closes the current, so both th...

AI Technical Summary

Problems solved by technology

Sulfur hexafluoride self-energizing circuit breakers include static contacts, moving contacts, static arcing contacts, moving arcing contacts, static contact seats, outlet plates and other related parts, of which the static arcing contacts and moving arcing contacts Arcing will occur when the circuit breaker breaks and closes the current, so both the moving arc contact and the static arc contact have certain ablation resistance. The static arc contact is installed on the static contact seat, and the short time The large current flows to the outlet board through the static arc contact through the static contact seat. Although the time is relatively short, but the current is relatively large, there will still be relatively large heat generation

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