Releasing mechanism and leakage protector

Abstract

The embodiment of the disclosure relates to a releasing mechanism comprising a magnetic conductive framework (1), a pin (2), a magnetic conductive plate (3), a bias mechanism (5), and a coil (6). The magnetic conductive framework (1) has two support legs (11, 12) and a middle part (13) connecting the two support legs (11, 12). The pin (2) that can be moved axially is arranged between the two support legs (11, 12). The magnetic conductive plate (3) is coupled to free ends of the two support legs (11, 12). The bias mechanism (5) is used for providing an acting force for the pin (2). The coil (6) encircles the pin (2) and is located between the two support legs (11, 12) of the magnetic conductive framework (1). In addition, the invention also provides a leakage protector. According to the releasing mechanism and the leakage protector, the manufacturing cost is reduced; qualities of products are reliable during batch production; the releasing power is reduced; and easy adjustment can be realized.

Description

technical field [0001] Various embodiments of the present disclosure relate to the field of earth leakage protectors, and in particular, relate to tripping mechanisms in earth leakage protectors. Background technique [0002] The leakage protector is a safety device, which is used to disconnect the working circuit when the equipment has a leakage fault, so as to protect the equipment and personal safety. The leakage protector monitors the leakage signal. When the leakage reaches the tripping threshold. The internal tripping mechanism acts, triggering the switch mechanism to act, thereby shutting off the working current and realizing the leakage protection function. Some of the energy required for the action of the tripping mechanism comes from the main circuit, some comes from the energy stored in the capacitor in the circuit, and some directly comes from the energy of the leakage current. In the design of leakage products, under the same product performance, the smaller ...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned tripping mechanism of the prior art, due to the use of an annular permanent magnet, it is difficult to adjust the magnetic field distribution relative to the moving element, so it is necessary to design different permanent magnets and different installations for tripping mechanisms with different sensitivity requirements. structure

This reduces flexibility and increases costs in manufacturing trip mechanisms with different sensitivities

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