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Leakage current monitor

A leakage current and monitoring instrument technology, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of low intelligence, inconvenient disassembly and assembly of accurate location of fault points, and inability to accurately understand leakage information, etc., to achieve convenient installation, The effect of easy installation

Inactive Publication Date: 2015-12-09
STATE GRID ZHEJIANG YIWU CITY POWER SUPPLY CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional residual current action relay automatically shuts off after the power is cut off, and the degree of intelligence is low. The inspectors cannot accurately understand the leakage information, accurately locate the fault point, and it is extremely inconvenient to disassemble.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0030] Such as Figure 1-2 As shown, a leakage current monitor includes a monitor body 101 and a clamp zero-sequence current transformer 201 connected to the monitor body 101, wherein the clamp zero-sequence current transformer 201 includes a base 3, The left induction clip 1 fixedly connected with the base 3, and the right induction clip 2 rotatably connected with the base 3; the left induction clip 1 includes a left housing 8 fixedly mounted on the base 3, and a The left magnetic coil 7 in the body 8, the right induction clip 2 includes a right housing 15 movably installed on the base 3, and a right magnetic coil 14 installed inside the right housing 15. The lead wires 10 of the left magnetic coil 7 and the right magnetic coil 14 are drawn out through the wire insertion hole 12 on the base 3 , and the wire insertion hole 12 is used for installing the wire 13 for an external device. In this embodiment, the base 3 includes an upper casing and a lower casing 11, wherein, the l...

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PUM

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Abstract

The invention discloses a leakage current monitor and belongs to the technical field of electric power protection equipment. The leakage current monitor comprises a monitor body and a pincerlike zero-sequence current transformer connected with the monitor body, wherein the monitor body comprises a housing, and a control module and a power supply module which are arranged in the housing; the housing is provided with a display screen, a plurality of buttons, indicating lamps and communication ports; the control module is controlled by a microprocessor; the pincerlike zero-sequence current transformer is connected with an input end of the microprocessor through a conversion chip; the buttons and the indicating lamps are respectively connected with the input end of the microprocessor; and the display screen is connected with an output end of the microprocessor. The leakage current monitor provided with the above structure has the advantages of high intelligent degree, reasonable structure, rapid communication, convenient installation and the like.

Description

technical field [0001] The invention relates to a leakage current monitor and belongs to the technical field of electric power protection equipment. Background technique [0002] The leakage current monitor is an alarm and control device that protects electrical equipment or circuits from electrical fires caused by ground faults due to insulation damage, as well as personal electric shock. It can detect the residual current and compare the residual current with the reference value. When the residual current is greater than the reference value, it can send a switch signal to control the actuator to cut off the power supply or send out alarm signals such as sound, light, and text messages, thereby playing a protective role. The traditional residual current action relay has the functions of leakage, overload protection and automatic reclosing. When the electrical equipment has a ground fault or the human body gets an electric shock, the residual current action relay can quickly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
Inventor 王鹏飞
Owner STATE GRID ZHEJIANG YIWU CITY POWER SUPPLY CO LTD