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Creepage breaker

A leakage circuit breaker and resistor technology, applied in circuit devices, emergency protection circuit devices, electrical components, etc., can solve the problems of high manufacturing costs, achieve the effects of reducing volume, avoiding malfunctions, and facilitating production and assembly

Inactive Publication Date: 2006-12-27
安徽飞达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the appliance flexible conductors are used in conjunction with, or plugged into, a ground fault circuit interrupter, arcing on the load side does not unbalance the differential transformer and, therefore, cannot be detected by the ground fault circuit interrupter
On the other hand, such ground fault circuit interrupters are relatively expensive to manufacture

Method used

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  • Creepage breaker
  • Creepage breaker

Examples

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Embodiment

[0023] see figure 1 , Leakage circuit breaker, including soft wires, soft wires include live wire L, neutral wire N, ground wire G and a metal shielding net wrapped live wire L and neutral wire N. It also includes an interrupter, two zero-cross trigger optocoupler IC1, IC2, bidirectional thyristor T1 and diode.

[0024] Depend on figure 2 It can be seen that the interrupter includes a switch Q2 and an electromagnetic coil. The switch Q2 includes a double switch K1 and K2. The switch Q2 is connected to the live wire L and the neutral wire N between the power supply and the load, and one end of the electromagnetic coil is connected to the neutral wire N of the power supply. , and the other end is connected to the output end of the thyristor T1. The circuit breaker KG-1 selectively opens or closes the live wire L and the neutral wire N.

[0025] The above-mentioned switches K1 and K2 can be placed at any one of the two connected positions. It is particularly important that s...

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PUM

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Abstract

The related earth leakage protector with low cost and high reliability comprises: when arcing between outside metal shield network and phase and neutral wires, the optical coupler outputs cross-zero to trigger pulse to conduct bidirectional thyristor and activate the breaker for protection.

Description

technical field [0001] The invention relates to a leakage protection device. Background technique [0002] The two wires used to power appliances create many potentially dangerous situations. Under certain circumstances, there is a risk of ground faults and grounded neutrals in the conductors. A ground fault occurs when there is a current imbalance between the live and neutral wires. A neutral-to-ground fault occurs when the neutral wire is connected to the load's ground. [0003] A conventional Ground Fault Circuit Interrupter (GFCI) consists of a differential transformer with a pair of opposing primary coils, one associated with the source and the other associated with the neutral. In the event of a ground fault on the load side of the GFCI, the fluxes generated by the two primary coils no longer cancel each other out and create flux in the center of the differential transformer. This flux is detected by a secondary coil wound around the center of the differential tran...

Claims

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Application Information

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IPC IPC(8): H02H3/14H01H83/20
Inventor 杨志成柯洪涛
Owner 安徽飞达实业有限公司