Unit for safeguarding inversed connection in ground fault circuit interrupter

Abstract

The protector for guiding against reverse connection of ground fault detector is mainly composed of circuit board, tripping resetting device, first pair of static contactor, second pair of static contactor, a pair of mobile contact rack, and control circuit. Characters are that: first pair of static contactor through conducting wire is connected to terminals of input power source; the mobile contact rack through junction device is connected to terminals of socket type load; being installed on lug plates of terminals of load, second pair of static contactor through control circuit makes the tripping resetting device operate so as to connect or disconnect power on loop between mobile contact rack and first / second pair of static contactor. When user connects power line to load end by accident, the detector cannot be reset. Thus, terminals of input power source and terminals of socket type load are not electrified so as to protect electrical appliance from damages, and personal safety.

Description

technical field [0001] The invention relates to a reverse connection protection device for ground fault protection, in particular to a reverse connection protection device for a ground fault circuit breaker. Background technique [0002] For the convenience of description, the following ground fault circuit interrupters are replaced by the English translation of Ground Fault Circuit Interrupter prefix GFCI. [0003] With the extensive use of electrical appliances in modern society, fires and electric shock accidents caused by ground faults often occur, which bring harm to personal safety and society. Ground fault circuit interrupters (hereinafter referred to as GFCIs) are a Electrical devices that cause equipment and fire accidents due to faults are widely used, and are gradually developing in the direction of high performance and multi-function. At present, the general ground fault circuit breaker does not have the reverse wiring protection function. People's carelessness ...

AI Technical Summary

Problems solved by technology

[0006] In the above mechanism, due to the limitation of space in the device, the positions of the first wiring device and the second and third wiring devices are on both sides of the coil when they are pulled in and broken (the silver contacts contact / separate). An arc is generated when making and breaking, and the high temperature generated is easy to damage the coil

In addition, the power wiring of the first wiring device is connected to the conductor from the power input terminal and passing through the detection magnetic ring and the neutral magnetic ring. Therefore, the charged area of ​​the GFCI when it is not working is relatively large, which may easily cause creepage.

In addition, in the first wiring device, the processing technology for connecting the moving contact frame with the power line is relatively complicated.

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