Uninterrupted power test residual current protective device

A technology of residual current and protection device, applied in the direction of emergency protection circuit device, circuit device, emergency protection device with automatic disconnection, etc., can solve the problems of non-immediate recovery, line trip, power loss, etc., to achieve the effect of simple installation

Active Publication Date: 2010-10-13
STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The traditional test method is to directly press the test button 3 of the residual current action protector to be tested, or use a grounding resistance to simulate grounding, and perform a test trip
During the trial jumping process, the AC contactor 2 coil will be de-energized and the line will be de-energized instantaneously, resulting in the following disadvantages:
[0003] 1. Frequent power outages of lines will have adverse effects on high-end electronic products such as LCD TVs and air conditioners, especially when instant communication devices such as computers and fax mac

Method used

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Embodiment Construction

[0014] Such as figure 1 As shown, the residual current protection device for non-stop testing of the present invention includes a detection device and a terminal block 12 fixed on the wall of the distribution box. The detection device includes a residual current action protector 6 and an intermediate relay 5 fixed in the test box 7 And monitoring lamp 4, the detection device is connected with the measured residual current action protector 3 and the AC contactor 2 in the distribution box through the terminal block 12, and the test box 7 shell is connected with the grounding body 14 through the connecting wire. The residual current operating protector 6 is provided with a residual current operating protector power input line 9 and a residual current operating protector output line 8, the residual current operating protector power supply input line 9 is connected to the intermediate relay 5, and the intermediate relay 5 is connected to the monitoring lamp 4 , the intermediate rel...

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Abstract

The invention relates to an uninterrupted power test residual current protective device which comprises a detection device and a terminal strip fixed on the wall of a distribution box, wherein the detection device comprises a residual current operated protective device fixed in a test box, an intermediate relay and a monitoring lamp, wherein the detection device is connected with a tested residual current operated protective device and an alternating current contactor which are arranged in the distribution box, and a casing of the test box is connected with a grounding box through a connecting wire. The device has simple structure, and an alternating current contact coil can not lose power during the trial jump.

Description

technical field [0001] The invention relates to a residual current protection device for non-power-off testing. Background technique [0002] In order to ensure the correct and sensitive operation of the residual current operated protective device, the operating personnel must conduct regular and irregular trip checks on the residual current operated protective device in operation. The existing distribution box usually includes the measured residual current operating protector 3, the AC contactor 2 and the zero-sequence current transformer 1, and the measured residual current operating protector 3 is provided with the measured residual current operating protector power supply input line 11 and the output line 10 of the measured residual current action protector, the power input line 11 of the measured residual current action protector is connected to the 220V voltage line 13, the output line 10 of the measured residual current action protector is connected to the intermediat...

Claims

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Application Information

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IPC IPC(8): H02H3/32
Inventor 朱正豪吴伟
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH
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