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A leakage protector and a leakage protection method thereof

A leakage protector and leakage protection technology, which is applied to emergency protection circuit devices, emergency protection devices for automatic disconnection, protection switch operation/release mechanisms, etc., can solve the problems of complex self-checking structures of leakage protectors, and achieve simple structure , High control accuracy, fast self-inspection effect

Inactive Publication Date: 2018-08-14
HEBEI AGRICULTURAL UNIV.
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese invention patent CN 104319202 B discloses a control device for earth leakage protector, the self-checking structure of this earth leakage protector is complicated, and power-off operation is required

Method used

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  • A leakage protector and a leakage protection method thereof
  • A leakage protector and a leakage protection method thereof
  • A leakage protector and a leakage protection method thereof

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Embodiment Construction

[0022] The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt mature bolts, rivets, welding in the prior art , pasting and other conventional means, no longer described in detail here.

[0023] refer to Figure 1-6 , a specific embodiment of the present invention includes,

[0024] A current transformer 1, used to detect leakage current;

[0025] The controller 2 judges the leakage status through the detection result of the current transformer 1;

[0026] The tripping mechanism 3 is used to implement the tripping action according to the signal of the controller 2;

[0027] The tripping mechanism 3 includes a base 4 on which an insulating plate 5 and a bracket 6 are fixed. The bracket 6 is hinged with a movable contact piece 7. The bottom of the movable contact piece 7 is connected to the br...

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Abstract

The invention discloses an electric leakage protector which comprises a current transformer, a controller and a releasing mechanism. The releasing mechanism comprises a base, an insulating plate and a support are fixed onto the base, a movable contact is hinged onto the support, the bottom of the movable contact is connected with the support by a return spring, a static contact is fixed to the top of the support, and an electromagnet is arranged on the base; the tail end of the magnetic movable contact can be downwardly attracted by the electromagnet when the electromagnet is powered on, and the top of the movable contact upwardly rotates to be in contact with the static contact; the top of the movable contact is downwardly pulled by the return spring when the electromagnet is powered off, so that the top of the movable contact can be in contact with the insulating plate; a first groove is formed in the edge of the outer side of the static contact, and a short-circuit metal rod is connected with the top of the movable contact by an elastic metal sheet, and is in contact with the first groove when the movable contact is in contact with the static contact. The electric leakage protector has the advantages that the shortcomings in the prior art can be overcome, self-checking procedures of the electric leakage protector can be simplified, and the electric leakage condition judgment accuracy of the electric leakage protector can be improved.

Description

technical field [0001] The invention relates to the technical field of leakage protection, in particular to a leakage protector and a leakage protection method thereof. Background technique [0002] The leakage protection device is a device that automatically cuts off the power supply when safety problems such as leakage occur in the power system. Chinese invention patent CN 104319202 B discloses a control device for an earth leakage protector. The self-inspection structure of this earth leakage protector is complicated, and a power-off operation is required. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a leakage protector and its leakage protection method, which can solve the deficiencies of the prior art, simplify the self-inspection process of the leakage protector, and improve the judgment accuracy of the leakage protector for the leakage condition . [0004] In order to solve the above technical problem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/24H02H3/32
CPCH01H71/24H02H3/32
Inventor 邵利敏袁洪波李东明周玉宏张莉王楠张梦韩丽娟
Owner HEBEI AGRICULTURAL UNIV.
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