Vacuum loading switch

A vacuum load and switch technology, applied in electric switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc., can solve problems such as small guiding gap, non-compliance with environmental protection requirements, and difficult assembly

Active Publication Date: 2007-09-05
江苏德春电力科技股份有限公司
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  • Summary
  • Abstract
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Problems solved by technology

However, SF6 gas is a greenhouse gas, and its greenhouse effect is 2500 times that of carbon dioxide, which has a greater impact on the environment and does not meet environmental protection requirements.
In addition, the existing vacuum load switch adopts soft connection at the moving end of the vacuum interrupter and the connection end of the isolation knife switch. Since the soft connection is charged, the user can only add an insulating partitio

Method used

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Examples

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Embodiment Construction

[0015] The present invention is described in further detail below in conjunction with the embodiment that accompanying drawing provides.

[0016] As shown in Figures 1, 2, 3, 4, and 5, a vacuum load switch of the present invention includes an upper outlet line 1 of a knife switch, an isolation knife switch 15, an isolation knife seat 13, a vacuum interrupter 5, and a lower moving contact 11. Lower outlet seat 12, connecting busbar 10, cable outlet plate 9, isolation knife insulation pull rod assembly 4, arc extinguishing chamber insulation pull rod assembly 8, operating mechanism 16 and grounding device 17, isolation knife switch 15 is connected in series with vacuum interrupter 5. The isolation knife insulation pull rod assembly 4 and the arc extinguishing chamber insulation pull rod assembly 8 are both in transmission connection with the operating mechanism 16, the isolation knife seat 13, the vacuum interrupter 5 and the lower outlet seat 12 are solidly sealed together, and ...

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PUM

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Abstract

The invention is concerned with a kind of vacuum load switch for high voltage fixed type switchboard, relating to upside wire of switch, insulated switch, insulated knife frame, vacuum interrupter, downside move contactor, downside wire frame, united terminal, cable leading line plank, insulated knife insulated perch assemblage, interrupter insulated perch assemblage, operation frame and grounding equipment. The insulated switch connects with vacuum interrupter, the insulated knife insulated perch assemblage and interrupter insulated perch assemblage connect with operation frame, and the insulated knife frame, vacuum interrupter and downside wire frame are closed together. The hinge end of insulated switch has contact spring that connects with insulated switch and insulated knife frame. The move end of vacuum interrupter has contact spring that connects with downside move contactor and downside wire frame. This invention has large insulated strength and modularization level, and the simple using is fit for production on scaled.

Description

technical field [0001] The invention relates to a high-voltage fixed switch cabinet, in particular to a vacuum load switch. Background technique [0002] The existing vacuum load switch, such as the ZN28-12 vacuum circuit breaker used in China, has exposed live parts, so it is greatly affected by the environment, has a high failure rate, and has low reliability. For this reason, the Chinese patent document CN1420514 discloses a vacuum automatic load switch on an integrated fully insulated pole, in which the operating mechanism, the isolation knife switch and the vacuum interrupter are all fixed in a sealed box filled with zero-gauge pressure SF6 gas. In order to prevent moisture intrusion and improve its reliability. However, SF6 gas is a greenhouse gas, and its greenhouse effect is 2500 times that of carbon dioxide, which has a great impact on the environment and does not meet environmental protection requirements. In addition, the existing vacuum load switch adopts soft ...

Claims

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Application Information

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IPC IPC(8): H01H33/66
Inventor 范雄
Owner 江苏德春电力科技股份有限公司
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