Medium voltage gas filled switchgear with modular circuit breaker

Abstract

The invention discloses a medium voltage gas filled switchgear with a modular circuit breaker. The medium voltage gas filled switchgear comprises a medium voltage gas filled switchgear body and a circuit breaker module. The circuit breaker module comprises the circuit breaker, a circuit breaker mechanism and a mechanism support, and is connected with an upper bus bar and a lower bus bar of the medium voltage gas filled switchgear body in an inserted manner, so that the medium voltage gas filled switchgear is simpler to assemble and can be independently produced and assembled, the mechanism can be tested after assembly, the production efficiency of the whole switchgear is improved, the circuit breaker module can independently serve as a product for sale, capacity is enlarged, and the purchase cost of parts is reduced.

Description

technical field [0001] The invention relates to a gas-insulated switchgear, in particular to a medium-voltage gas-filled switchgear with a modular circuit breaker. Background technique [0002] Domestic air-insulated medium-voltage switchgear has basically achieved modular production, and there are professional circuit breaker suppliers, housing suppliers, primary and secondary component suppliers, etc., so the current price of medium-voltage air-insulated equipment has already It has dropped to a very low level, but manufacturers still have profit margins for survival. However, in the field of medium-voltage switchgear with gas as the insulating medium, it has not yet reached the modular level of air-insulated equipment, especially the "heart" of a switchgear-circuit breaker. [0003] like figure 1 Shown is a schematic diagram of circuit breaker installation for medium voltage switchgear. The upper and lower busbars of the circuit breaker and the medium voltage switchgea...

AI Technical Summary

Problems solved by technology

The upper and lower busbars of the circuit breaker and the medium voltage switchgear are fixed by bolts. If the vacuum interrupter or its accessories of this product need to be replaced at the operating site, and the busbar room is in normal live operation, although the isolating switch can isolate the charged body, the Operators are still at risk of electric shock

And in the process of replacement, due to the narrow space, it will easily cause damage to other components or small parts such as screws and nuts will be left in the air chamber, causing operational safety hazards

If the outside air is seriously polluted, the long-term open state of the air box seal will also cause hidden dangers to the normal operation of the switch

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