Actuation device for auxiliary release of residual current actuation release breaker

A technology of residual current and action mechanism, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of short enough tripping time and complex structure, and achieve the effect of compact structure, reduced movement resistance, and reliable tripping.

Active Publication Date: 2004-12-29
ZHEJIANG CHINT ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually the four-bar linkage mechanism is composed of a fixed rod, an active rod, a connecting rod and a passive rod. The passive rod in the above-mentioned patent includes a hook leve

Method used

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  • Actuation device for auxiliary release of residual current actuation release breaker
  • Actuation device for auxiliary release of residual current actuation release breaker
  • Actuation device for auxiliary release of residual current actuation release breaker

Examples

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Example Embodiment

[0025] The auxiliary release includes a four-bar linkage mechanism and an electromagnetic relay 13. The electromagnetic relay 13 controls the action mechanism 12 to trip by controlling the lock 26 of the action mechanism 12, and the electromagnetic relay 13 collects the zero-sequence current transformer. The received tripping command is transmitted to the extended shaft 28 of the circuit breaker unit through the arc wall 55 of the rocker arm 25, thereby driving the circuit breaker to trip.

[0026] The electromagnetic relay 13 is electrically connected with the induction coil of a zero-sequence current transformer. The induction coil of the zero-sequence current transformer can detect the residual current. When the residual current reaches a certain value, the coil of the electromagnetic relay 13 is excited, and the ejector rod of the electromagnetic relay 13 27 pops out, pushes the lock 26 to rotate, the hook 52 of the lock 26 is released, so that the mechanical interlock 35 o...

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Abstract

The invention discloses an auxiliary electrical apparatus release actuation device for the residual current actuation release breaker, which comprises a four bar linkage composed of a housing, a handgrip, a U-shaped rod and a rocker arm, a shackle and a hook arranged thereon, an energy-storage spring, and a restoring lever, wherein one supporting surface of the rocker arm, the shackle hook and the column surface of the U-shaped rod form a disconnecting mechanical interlocking, thus a compacter actuation mechanism and reliable tripping operation can be achieved.

Description

technical field [0001] The invention relates to a low-voltage electrical appliance, in particular to an actuating mechanism of an auxiliary release of a residual current action trip circuit breaker. The auxiliary release can be connected and coupled with a multi-pole circuit breaker on the side. The circuit breaker at least includes a pair of movable and static contact groups with thermal and magnetic protection that can be broken. Background technique [0002] The action mechanism of the auxiliary release of the existing residual current action trip circuit breaker, such as "Auxiliary Trip Unit of Circuit Breaker" disclosed in Chinese Patent ZL89101031, the action mechanism of the auxiliary trip unit includes: [0003] A trip lever controlled by a trip relay with working coil and trip cap; [0004] A mechanical trip link that transmits the trip command to the switching mechanism of the circuit breaker unit by means of the cap of the relay, to cooperate with the above-menti...

Claims

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Application Information

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IPC IPC(8): H01H71/40H01H71/52
Inventor 胡金利王先锋唐春敏
Owner ZHEJIANG CHINT ELECTRIC CO LTD
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