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Electronic multi-sectional overcurrent protection device

A protection device, multi-stage technology, applied in the direction of adjusting protection switch conditions, protection switch operation/release mechanism, etc., can solve the problems of remote setting and user setting, etc., and achieve the effect of improving protection accuracy and practicability

Active Publication Date: 2011-09-14
PIZHOU GUOLONG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The protection action current value of the hydraulic electromagnetic protection product is completed inside the factory, and the user can neither set it according to the required site, nor can it be set remotely

Method used

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  • Electronic multi-sectional overcurrent protection device
  • Electronic multi-sectional overcurrent protection device
  • Electronic multi-sectional overcurrent protection device

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Embodiment Construction

[0015] Such as figure 1 and figure 2 As shown, the electronic multi-stage overcurrent protection device has an L1 coil 4, and the upper end of the L1 coil 4 is equipped with a short-circuit protection element, and the short-circuit protection element is installed on the static armature 8 obliquely by the static armature 8 installed on the upper end of the L1 coil. The moving armature 9, the needle roller 10 and the return torsion spring 11 are composed. The upper ends of both sides of the static armature 8 have symmetrical bends 18, a limiting groove A16 is opened on the inner side of the bending 18, and a limiting groove B17 is opened in the middle of the bending 18 .

[0016] The moving armature 9 is in the form of inclined-plane swing-type suction or plane suction. In this embodiment, the moving armature 9 is inclined to swing and pull in. There are shoulders on both sides of the bottom end of the moving armature 9 that is inclined to swing, and there are upward protru...

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Abstract

The invention discloses an electronic multi-sectional overcurrent protection device and relates to the technical field of protection of molded case circuit breakers and molded case residual current operation circuit breakers. The device is provided with a winding L1; a short-circuit protection element consisting of a static armature, a movable armature, a roller pin and a resetting torsional spring is arranged at the upper end of the winding L1; a bent part is arranged at the upper end of the static armature symmetrically; a limiting groove A is formed at one end on the inner side of the bentpart; a limiting groove B is formed in the middle of the bent part; a winding L2 and a winding L3 are arranged at the lower end of the winding L1; the winding L1 is a primary side winding, and the winding L2 and the winding L3 are secondary side windings; the head of the winding L2 is connected with the tail of the winding L3; and the tail of the winding L2 and the head of the winding L3 are voltage signal output ends. The electronic multi-sectional overcurrent protection device has the advantages of setting or adjusting an overcurrent protection operation value on site, and remotely setting or controlling in combination with corresponding equipment.

Description

technical field [0001] The invention relates to the protection technical field of molded case circuit breakers and molded case residual current operated circuit breakers, in particular to an electronic multi-stage overcurrent protection device suitable for 2P, 3P, 4P, 3P+N (2P, 3P, 4P, 3P +N is the special code in the circuit breaker, P means pole, N means N line, commonly known as zero line, that is, 2 poles, 3 poles, 4 poles, 3 poles + neutral line) with thermal magnetic, hydraulic electromagnetic overcurrent protection Functional molded case circuit breaker, molded case residual current operated circuit breaker protection. Background technique [0002] At present, there are two types of overcurrent protection for molded case circuit breakers and molded case residual current operated circuit breakers: thermal magnetic type and hydraulic electromagnetic type. [0003] The thermal magnetic protection is composed of bimetal and current coil L1. Under the action of working cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/24H01H71/74
Inventor 王卫东辛怀海梁艳龙秦政彭飞臧保良李修锋倪兴堂王永海董大艳
Owner PIZHOU GUOLONG ELECTRIC
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