Leakage protecting apparatus

A leakage protection device and resistance technology, applied in the direction of circuit devices, emergency protection circuit devices, automatic disconnection emergency protection devices, etc., can solve the problems of electric shock casualties, failure to ensure electricity safety, failure to achieve protection, etc., to achieve good The effect of security protection
CN102354948BActive Publication Date: 2013-03-27ๅˆ˜็ฟๅˆš
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ๅˆ˜็ฟๅˆš
Publication Date
2013-03-27

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a leakage protecting apparatus, which not only can prevent electric-shock accidents caused by malfunctions of electric appliances, but also can prevent the electric-shock accidents caused by accidental electrification of a ground wire. A zero-sequence current mutual inductor of the leakage protecting device is also provided with a detection winding, the detection winding of the zero-sequence current mutual inductor is separated from a secondary winding of the zero-sequence current mutual inductor in an insulation way, a detection circuit which is formed by serially joining the detection winding of the zero-sequence current mutual inductor and a current-limiting resistance-capacitance element is arranged between a ground wire and a zero wire, one terminal and another terminal of an electromagnetic coil are respectively connected with the anode and the cathode of a controllable silicon, and one output end and another output end of a primary winding of the zero-sequence current mutual inductor are respectively connected with one input end and another input end of a driving circuit of the electromagnetic coil.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of electricity safety protection, in particular to an electric leakage protection device. Background technique

[0002] The Chinese patent literature publication number is CN1142618C discloses a kind of earth leakage protection device which can be opened and closed. The earth leakage protection device is not only equipped with a zero-sequence current transformer through which both the phase line and the neutral line pass, but also has a ground wire through It is an electrified detection sensor for the over ground wire, so it can not only detect whether there is any residual current between the phase wire and the neutral wire at the load end, when the residual current between the phase and neutral wires reaches the preset threshold (for example: 10mA ), it will trip immediately and cut off the phase wire, neutral wire and ground wire; and when the ground wire is accidentally electrified due to an abnormal gro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More