Air insulation fixed cabinet

Abstract

The invention discloses an air insulation fixed cabinet, and the cabinet comprises a fixed cabinet shell, a bus chamber, a circuit breaker chamber, a cable chamber and an instrument chamber; a controlchamber is arranged below the instrument chamber, and the control chamber is arranged at the front side of the circuit breaker chamber; a bus and an isolating switch are arranged in the bus chamber;the isolating switch is driven by an isolating switch interlocking connecting rod; an ISM circuit breaker is arranged in the circuit breaker chamber and is driven by a circuit breaker interlocking connecting rod; the cable chamber is used for installing a grounding switch which is driven by a grounding switch interlocking connecting rod; a mechanical locking operation panel is arranged in the control chamber, is connected with the isolating switch interlocking connecting rod, the circuit breaker interlocking connecting rod and the grounding switch interlocking connecting rod respectively, andis used for realizing five-prevention interlocking operation. According to the invention, the ISM circuit breaker is adopted to realize a non-perception power regulation technology, and the rapid switching between two paths of power supplies and a breaking cabinet is realized; and the problem of use limitation of the ISM circuit breaker in the switch equipment is solved through a five-prevention interlocking structure.

Description

technical field [0001] The invention relates to the technical field of switchgear for power transmission and distribution, in particular to an air-insulated fixed cabinet. Background technique [0002] ISM circuit breaker is a world-class high-performance and high-parameter circuit breaker switch. The switchgear using this circuit breaker is too old-fashioned, and there are certain problems in its safety, such as arcing requirements and protection levels between compartments. , and due to interlocking restrictions, the use of ISM circuit breakers in switchgear is greatly restricted. At the same time, when the currently configured circuit breaker has an operation failure or operation and maintenance on site, the switching of the two power sources will cause a temporary power outage for the user, which will have a greater impact on various loads, especially important loads. Contents of the invention [0003] The purpose of the present invention is to provide an air-insulate...

AI Technical Summary

Problems solved by technology

[0002] ISM circuit breaker is a world-class high-performance and high-parameter circuit breaker switch. The switchgear using this circuit breaker is too old-fashioned, and there are certain problems in its safety, such as arcing requirements and protection levels between compartments. , and due to interlocking restrictions, the use of ISM circuit breakers in switchgear is greatly restricted

At the same time, when the currently configured circuit breaker has an operation failure or operation and maintenance on site, the switching of the two power sources will cause a temporary power outage for the user, which will have a greater impact on various loads, especially important loads.

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