Mining RLC comprehensive high-voltage impedance electric leakage locking protection device

A blocking protection and comprehensive protection technology, which is applied to emergency protection circuit devices, emergency protection devices with automatic disconnection, circuit devices, etc., can solve problems such as switch paralysis, failure to operate, and damage to related accessories, so as to protect safe operation and enhance Reliability and safety, and the effect of preventing leakage faults

Pending Publication Date: 2020-05-08
YANGQUAN HUASHENG MINING EQUIP FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the leakage of high-voltage switches has always been in an imperfect state. When encountering various faults, when high voltage and high current rush in, many related accessories will be damaged. Once such faults occur, the switch will be paralyzed and cannot Actions that affect downhole production and personal equipment safety

Method used

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  • Mining RLC comprehensive high-voltage impedance electric leakage locking protection device
  • Mining RLC comprehensive high-voltage impedance electric leakage locking protection device

Examples

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Effect test

Embodiment 1

[0035] Embodiment one is used in the system of mine 3.3kv;

[0036] Such as figure 1 As shown, a mining RLC comprehensive high-voltage impedance leakage blocking protection device described in the present invention includes a reversible contactor KM, a motor M, a current transformer T, a controller PLC, a current detection module CA, a comprehensive protection module EL, a leakage current Lock detection module GG, leakage transmission module DA and ground terminal GND;

[0037] The three-phase power line in the main circuit is connected to the motor M through the reversing contactor KM and through the current transformer T;

[0038] The controller PLC is electrically connected with the reversing contactor KM to control the start and stop of the motor M;

[0039] The current transformer T is electrically connected to the current detection module CA, and is used to detect whether there is current in the line and the magnitude of the current, and then feeds back the signal to t...

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PUM

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Abstract

The invention provides a mining RLC comprehensive high-voltage impedance electric leakage locking protection device which comprises a reversible contactor KM, a motor M, a current transformer T, a controller PLC, a current detection module CA, a comprehensive protection module EL, an electric leakage locking detection module GG, an electric leakage transmission module DA and a grounding terminal GND. Beneficial effects of the device are that isolation is performed through an A / D circuit after filtering, voltage reduction and voltage stabilization; double relays and double power supplies are arranged; reliability and safety of the device are enhanced; an electric leakage fault is prevented; and safe operation of the system is effectively protected.

Description

technical field [0001] The invention relates to the electromechanical field, in particular to a mine-used RLC comprehensive high-voltage impedance leakage blocking protection device. Background technique [0002] In my country's primary energy structure, coal will be my country's main energy source for a long time. Advanced coal production process depends on advanced coal mining machinery and equipment. As a special coal mine machinery and equipment involving personal and equipment safety, mine explosion-proof electrical appliances occupy an important position in the national economy. With the continuous development of modern mines, mine explosion-proof electrical equipment products are gradually developing towards intelligence, large capacity, and combination, and microelectronic technology has also begun to be applied in mine explosion-proof electrical equipment products. [0003] The common leakage faults of coal mine motors and their power supply lines are as follows: ...

Claims

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Application Information

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IPC IPC(8): H02H1/00H02H3/26H02H7/08
CPCH02H1/0007H02H1/0061H02H3/26H02H7/0822H02H7/0833
Inventor 杨玲玲李云辉张云武王云光杨春花王丽尹亚伟
Owner YANGQUAN HUASHENG MINING EQUIP FACTORY
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