Flashover leakage protector and protection method thereof

A leakage protection device and arc flashover technology, applied in emergency protection circuit devices, circuit devices, emergency protection devices with automatic disconnection, etc. Equipment maintenance costs, the effect of preventing fire accidents, and preventing spontaneous combustion accidents

Inactive Publication Date: 2006-01-25
常州仁千电气科技股份有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

In the low-voltage power distribution supply system, with the continuous increase of electrical equipment and the continuous increase of the power of a single machine, the power supply line is often in a state of full load or even overload, and sometimes even in a long-term overload state. Therefore, the surface of the power supply line The insulating layer of the insulation layer is very easy to age; and the general air switch and the earth leakage protection switch cannot perform protective action against the arc caused by the aging of the insulation layer on the surface of the line and then the burning, which causes the arc in the transmission line and the phenomenon of arc burning happens again and again

Method used

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  • Flashover leakage protector and protection method thereof
  • Flashover leakage protector and protection method thereof
  • Flashover leakage protector and protection method thereof

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Embodiment Construction

[0038] The flashover leakage protection device of the present invention is detected by the current mutual inductance device through the leakage current and arc (flashover) of the leakage electrical equipment, and the signal is detected, amplified, and then analyzed and processed by the micro-processing device, and finally judged whether it is necessary A tripping signal is issued, and the tripping signal is amplified by the driving circuit to force the tripping device to act, so as to quickly cut off the power input of the electrical equipment.

[0039] The implementation of the arcing leakage protection device and the protection method thereof of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] see figure 1 , 2 , figure 1 It is the electric principle block diagram of the arc leakage protection device of the present invention; figure 2 It is the electronic circuit diagram of the arc leakage protection device of...

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Abstract

This invention relates to a flash over leakage protection device and its protection method. The device is composed of a control circuit board, a fault test component with its output connected with the control circuit board and the input connected with the input of the fault signals of the arc and leakage generated by the load and a tripping device connected with the signal output controlling the act of the CB and a load supply end separately. This invention utilizes a current mutual-inductance device to test the leakage and arc of a device to get signals to be detected and amplified then to be analyzed and processed by a microprocessor to judge if it's necessary to send out the tripping signal to be driven and amplified to force the act of the tripping device to cut off the input of an electric device.

Description

technical field [0001] The invention relates to a line protection device for arc fault and electric leakage fault, in particular to a line protection device for low-voltage power supply system, when arc or electric leakage is caused by fault between transmission lines or between transmission lines and ground, The utility model relates to an arcing leakage protection device and a protection method thereof which automatically cut off the power supply to prevent fire. Background technique [0002] At present, with the development of the global economy and the improvement of people's living standards, there are more and more household electrical appliances, and the power of the single machine used is constantly increasing. In the low-voltage power distribution supply system, with the continuous increase of electrical equipment and the continuous increase of the power of a single machine, the power supply line is often in a state of full load or even overload, and sometimes even ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/20H02H3/14
Inventor 蒋闯
Owner 常州仁千电气科技股份有限公司
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