Three-phase communal compact solid insulation high voltage AC vacuum switchgear

Abstract

The invention relates to a three-phase common-proper compact type solid insulation high voltage alternating current vacuum switching cabinet which comprises a box body, an internal disconnecting switch, a vacuum circuit breaker, an earthing switch, a left cable incoming and outgoing end, a right cable incoming and outgoing end and an operating mechanism, wherein the disconnecting switch, the earthing switch and an insulating base are arranged on a skeleton of the box body; the insulating base comprises a T-shaped conducting rod; the upper end of the T-shaped conducting rod is used as a fixed contact of the disconnecting switch; the lower end of the T-shaped conducting rod is used as a fixed contact of the earthing switch; the right cable incoming and outgoing end is fixedly sealed at the right side of the lower end of the vacuum circuit breaker; the left end of the T-shaped conducting rod is used as the left cable incoming and outgoing end; the vacuum circuit breaker is connected with a spring stored energy operating mechanism; and the disconnecting switch and the earthing switch are respectively connected with a closed type manual operating mechanism. The three-phase common-proper compact type solid insulation high voltage alternating current vacuum switching cabinet has the advantages: live parts of all switching elements are encapsulated by adopting solid insulation materials; and the live parts are not exposed and are safer to use. Compared with similar products with voltage glass of 40.5kV and below, the switching cabinet has the advantages that the volume is reduced by 50-80%, the weight is reduced by 30-60% and raw materials are saved by more than 20-30%.

Description

technical field [0001] The invention relates to a high-voltage switchgear, in particular to a three-phase communal compact solid-insulated high-voltage AC vacuum switchgear. Background technique [0002] Three-phase communal compact solid-insulated high-voltage AC vacuum switchgear is mainly used for power distribution in industrial and mining enterprises and secondary substations in power systems, power receiving, power transmission, reactive power automatic compensation devices, and large-scale high-voltage motor starting, etc. Implementation of control protection, monitoring purposes. [0003] At present, the live parts of the switching elements in the three-phase communal compact solid-insulated high-voltage AC vacuum switchgear are exposed, and the safety of use is poor, and there is a risk of electric shock. Due to the small creepage distance, in order to meet the insulation requirements, the overall volume is large, so the weight is also large, the consumption of raw...

AI Technical Summary

Problems solved by technology

[0003] At present, the live parts of the switching elements in the three-phase communal compact solid-insulated high-voltage AC vacuum switchgear are exposed, the safety of use is poor, and there is a risk of electric shock

Due to the small creepage distance, in order to meet the insulation requirements, the overall volume is large, so the weight is also large, the consumption of raw materials is large, and the equipment occupies a large area.

Especially when used in outdoor box-type substations, outdoor switching stations or outdoor high-voltage cable distribution boxes for urban cable distribution, it often cannot meet user requirements

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