Power transmission mechanism for four poles circuit breaker

A technology of power transmission mechanism and circuit breaker, which is applied in the direction of protection switch operation/release mechanism, circuit, parts of protection switch, etc., and can solve the problems of inability to ensure neutral pole electrical insulation, short disconnection distance, etc.

Active Publication Date: 2011-07-20
LSIS CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the prior art, although it is possible to have so-called quick closing and delayed opening characteristics, there is a problem that due to the disconnection between the fixed contactor and the movable contactor in the neutral pole at the time of opening, The opening distance (i.e., the insulation distance) is shorter than that of the other poles, so electrical isolation of the neutral pole cannot be ensured

Method used

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  • Power transmission mechanism for four poles circuit breaker
  • Power transmission mechanism for four poles circuit breaker
  • Power transmission mechanism for four poles circuit breaker

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Embodiment Construction

[0014] With reference to the accompanying drawings, the purpose of the present invention and the structure, functions and effects of the present invention to achieve the above purpose will be more clearly understood through the following description of the preferred embodiments of the present disclosure.

[0015] will combine Figure 1 to Figure 4 The configuration of the power transmission mechanism of the four-pole circuit breaker according to the preferred embodiment of the present invention will be described. Figure 1 to Figure 4 is a diagram illustrating only the movable contactor 17 and the fixed contactor 18, the switching mechanism 10, and the power transmission mechanism of the four-pole circuit breaker according to a preferred embodiment of the present invention in a state where the housing is removed in the four-pole circuit breaker, The movable contactor 17 and the fixed contactor 18 are set to correspond to each of the four poles, the switching mechanism 10 is us...

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Abstract

Provided herein is a power transmission mechanism of a four poles circuit breaker in which the contact points of a neutral pole thereof are brought into contact earlier at the time of closing and separated later at the time of opening than those of the other poles thereof, and according to the present invention, there is disclosed a power transmission mechanism of a four poles circuit breaker comprising: a switching shaft configured to provide a driving force for switching to the movable contactors of the poles; an arm provided to correspond to the four poles to transfer the rotational torque of the switching shaft; and a link configured to transfer the rotational torque of the arm to the movable contactor as a switching force, and provided to correspond to the four poles, wherein the sum of the length of the arm and the link in a neutral pole is longer than the sum of the length of the arm and the link in the poles excluding the neutral pole.

Description

technical field [0001] The present invention relates to a four-pole circuit breaker, and more particularly to a power transmission mechanism for a four-pole circuit breaker. Background technique [0002] A four-pole circuit breaker (that is, a three-phase four-wire type circuit breaker) has a configuration that includes four movable contactors and fixed contactors respectively corresponding to four poles to simultaneously switch three-phase AC power lines and neutral The neutral line, the three-phase AC transmission line has R pole (that is, R phase), S pole (that is, S phase) and T pole (that is, T phase), and the neutral line has a grounded neutral pole (N pole or that is N phase). Here, the neutral line is a line that plays an important role in safely supplying electric power. This is because various relays for detecting abnormal current caused by ground fault current, short circuit current, lightning, etc. are connected and installed to the neutral line, and multiple g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
CPCH01H71/44H01H71/002H01H2071/1036H01H71/525
Inventor 白起昊
Owner LSIS CO LTD
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