Flameproof feed switch protection device for mining

A technology of feed switch and protection device, applied in the field of switches

Inactive Publication Date: 2017-11-07
RIZHAO NANRUI ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in mines containing explosive dangerous mixed gas (such as methane mixture) and coal dust, there is no switch that integrates multiple protections

Method used

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  • Flameproof feed switch protection device for mining
  • Flameproof feed switch protection device for mining
  • Flameproof feed switch protection device for mining

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Embodiment Construction

[0033] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like figure 1 As shown, a mine flameproof feed switch protection device described in this embodiment includes a main processor 1, and also includes a quick-break protection module 2 connected to the main processor 1, an overcurrent protection module 3, an overload Protection module 4, negative sequence protection module 5, phase failure protection module 6, unbalance protection module 7, leakage protection and leakage blocking module 8, selective leakage protection module 9, zero sequence overvoltage protection module 10, overvoltage and undervoltage protection Module 11, non-electricity protection module 12 and instantaneous power recovery and post-acceleration protection module 13;

[0035] like figure 2 As shown, after the quick-brea...

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Abstract

The present invention provides a flameproof feed switch protection device for mining, which comprises a main processor, and a quick-break protection module, an over-current protection module, an over-load protection module, a negative sequence protection module, an open phase protection module, an unbalance protection module, a leakage protection and leakage locking module, a selective leakage protection module, a zero sequence over-voltage protection module, an over-voltage and under-voltage protection module, a non-electricity protection module and an instantaneous once power restoration and post-acceleration protection module which are connected to the main processor. The device provides a variety of protection, such as short circuit protection, overload protection, overvoltage protection, undervoltage protection, negative sequence protection, non-power signals, etc., to achieve instantaneous once power restoration protection. The NRKJ380 communication management machine cooperation is used for protection, network centralized line selection can be achieved through network communication, and a grounding line is directly selected. The existing mature NARI ground high voltage contact closure technology of the south end is used for protection, and the cross-class trip resistance function is achieved.

Description

technical field [0001] The invention relates to the technical field of switches, in particular to a mine-used flameproof feed switch protection device. Background technique [0002] In the prior art, in mines containing explosive dangerous mixed gas (such as methane mixture) and coal dust, there is no switch that integrates multiple protections. Contents of the invention [0003] The invention provides a mine-used explosion-proof feeding switch protection device, which can be used as a main distribution switch or a branch switch. The protection of the feeder switch fully considers the actual situation of the coal mine underground, makes full use of the mature technology in the comprehensive automation of the existing power system, adopts a high-performance and high-reliability MCU chip, and applies a number of hardware and software anti-interference measures, integrating monitoring, protection, Control and measurement in one. Provides short-circuit protection, overload p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/10H02H3/093H02H3/13H02H3/16H02H7/26
CPCH02H3/10H02H3/093H02H3/13H02H3/16H02H7/26
Inventor 刘峰葛小军
Owner RIZHAO NANRUI ELECTRICAL TECH
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