Under voltage release of low voltage circuit breaker

A low-voltage circuit breaker and under-voltage technology, applied in the field of under-voltage release, can solve the problems of high inter-turn voltage, large number of parallel coil turns, increased volume, etc., to achieve simple and reliable transmission mechanism, no need to adjust the operating voltage, The effect of accurate operating voltage

Inactive Publication Date: 2004-04-21
SEARI ELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. The release coil is a parallel coil, and the voltage is applied to both ends of the coil. When the voltage rises, the current increases, and the coil will heat up and burn out after long-term operation;
[0008] 2. The number of turns of the parallel coil is large, and the inter-turn voltage is high. If the insulation of the coil is poor, it will cause a short circuit and burn the coil;
[0010] To solve the problems enc...

Method used

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  • Under voltage release of low voltage circuit breaker
  • Under voltage release of low voltage circuit breaker
  • Under voltage release of low voltage circuit breaker

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Embodiment Construction

[0017] refer to figure 1 , the undervoltage release includes a housing 1, an electromagnetic mechanism, and an electronic module, wherein the electromagnetic mechanism is placed at the front of the inner cavity of the housing 1, and the electronic module is placed at the rear of the inner cavity of the housing 1. The electromagnetic mechanism is controlled by the back yoke Iron 3, stopper 5, energy storage spring 6, working coil 8, armature 9, front yoke 10, permanent magnet 4, closed coil 7 are assembled, and permanent magnet 4 is installed between back yoke 3 and stopper 5 The closed coil 7 is located between the working coil 8 and the iron stopper 5, and the energy storage spring 6 is located between the inner cavity at the rear of the armature 9 and the iron stopper 5; the electronic module consists of an undervoltage detection circuit, a signal integrated control circuit, and a main control circuit. and a DC power supply circuit.

[0018] The undervoltage detection circu...

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Abstract

The present invention relates to a low-voltage tripping mechanism of a low-voltage breaker. The tripping mechanism comprises an electromagnetic mechanism housed in front portion of a chamber of a case and an electronic module housed in rear portion of the case; the electromagnetic mechanism comprises an armature, a front yoke, a working coil, a baffle and a rear yoke, characterized in that a permanent magnet is disposed between the rear yoke and the baffle, a closed coil is disposed between the working coil and the baffle, a power storage spring is mounted in the chamber behind the armature with the spring counteracting against the baffle, the circuits of said electronic module comprises a low-voltage detecting circuit, a synthetic signal controlling circuit, a main controlling circuit and a D.C. power supply. It's advantages include such as small volume simple structure, constant holding force, the coil being not overheated in high voltage, the contacts being closed reliably in low voltage, actuating voltage being accurate, power-saving and low noise.

Description

technical field [0001] The invention relates to an undervoltage tripper of a low-voltage circuit breaker, belonging to the technical field of circuit breakers. Background technique [0002] Low-voltage circuit breakers are mainly responsible for overload, undervoltage and short-circuit protection of distribution lines and equipment. The undervoltage release is the mechanism for the above-mentioned circuit breaker to perform undervoltage protection on low-voltage lines and electrical equipment. The undervoltage release needs to be powered continuously for a long time, and its action characteristics should reach: when the power supply voltage is lower than 35% of the rated working voltage, the undervoltage release cannot be closed, preventing the circuit breaker from closing; when the power supply voltage is equal to or greater than the rated When the working voltage is 85%, it should be able to close to ensure reliable closing of the circuit breaker; when the power supply vo...

Claims

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Application Information

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IPC IPC(8): H01H71/32H01H83/12
Inventor 蔡璇琴韩明泽傅震远陈正馨万绍尤
Owner SEARI ELECTRIC TECH
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