Circuit breaker for 10kV gas-insulated switchgear
A technology for circuit breakers and inflatable cabinets, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., and can solve the problems of slow opening and closing speed, weak closing ability of grounding knife switch, and reliable closing influence, etc.
Pending Publication Date: 2021-05-11
湖南长高成套电器有限公司
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Problems solved by technology
[0004] However, in the current market, the circuit breaker plus isolation and grounding integrated switch used in the inflatable cabinet has obvious deficiencies, especially the grounding switch part. The existing grounding switches basically use independent crank arms to drag the knife. , its structural strength is relatively weak, the opening and closing speed is slow, and the stability when opening and closing is not good enough, so the closing ability of the grounding knife switch is not strong. However, the grounding switch is the most widely used in the power distribution system to protect people. It is a commonly used switchgear for equipment safety. During the closing process of the grounding switch, the load may pour current into the grounding switch. The instantaneous value of the current can reach tens of thousands of amperes. Closing has a great impact, and the grounding switch of the existing inflatable cabinet is difficult to withstand the large current repulsion
Method used
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[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] Figure 1 to Figure 5 It shows an embodiment of a circuit breaker for a 10kV inflatable cabinet of the present invention. The circuit breaker for a 10kV inflatable cabinet includes a grounding switch 1 and two mounting plates 2 arranged at intervals, and a grounding switch is embedded between the bottoms of the two mounting plates 2. The knife switch 3 and the grounding switch 1 include a movable knife turret 11 and a grounding knife contact 12 arranged on the movable knife turret 11 , and the movable knife turret 11 is rotatably embedded between two mounting plates 2 . The closing process of the grounding switch 1: the rotating knife turret 11 rotates, so that the grounding knife contact 12 on the moving knife turret 11 contacts the grounding knife switch 3 to realize closing. Driven by the direct axis of the moving knife tur...
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The invention discloses a circuit breaker for a 10kV gas insulated switchgear, which comprises a grounding switch and two mounting plates arranged at an interval, a grounding knife switch is embedded between the bottoms of the two mounting plates, the grounding switch comprises a moving knife rotating stand and a grounding knife contact piece arranged on the moving knife rotating stand, and the moving knife rotating stand can be rotatably embedded between the two mounting plates. The circuit breaker for the 10kV gas insulated switchgear has the advantages of being high in structural strength, high in switching-on and switching-off speed, good in switching-on and switching-off stability, capable of bearing large current repulsive force and the like.
Description
technical field [0001] The invention relates to the technical field of inflatable cabinets, in particular to a circuit breaker for a 10kV inflatable cabinet. Background technique [0002] With the research and development of new technology and new materials, the types of high-voltage switchgear are becoming more and more abundant, but the gas-filled cabinet still plays an important role in the 10kV power transmission and distribution system. [0003] In the inflatable cabinet, the circuit breaker is an extremely important primary component. Whether the power transmission and distribution system can operate safely depends to a large extent on whether the performance of the circuit breaker is strong and reliable. [0004] However, in the current market, the circuit breaker plus isolation and grounding integrated switch used in the inflatable cabinet has obvious deficiencies, especially the grounding switch part. The existing grounding switches basically use independent crank a...
Claims
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IPC IPC(8): H01H33/664H01H33/666
CPCH01H33/664H01H33/666
Inventor 罗健欧阳帆
Owner 湖南长高成套电器有限公司