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实用新型
CN205123228U 煤矿负荷控制中心选择性漏电保护系统 有权

煤矿负荷控制中心选择性漏电保护系统
摘要：
本实用新型公开了一种煤矿负荷控制中心选择性漏电保护系统，属于矿用设备三大保护技术领域，该系统包括DSP、零序信号采集电路、信号处理电路、绝缘电阻检测电路、执行单元、操作单元、显示单元和CAN通讯单元。采用附加直流电源法和过零触发法相结合的方式对煤矿负荷控制中心漏电故障进行保护，不仅能够实现漏电电流大小的测量，还能够准备判断漏电支路。
摘要（英）：

The utility model discloses a colliery load control center selective earth lea kage protection system belongs to three big protection technical field of mine equipment, and this system includes DSP, zero sequence signal acquisition circuit, processing circuit, insulation resistance detection circuitry, execution unit, operational unit, display element and CAN communication unit. Adopt additional DC power supply method and zero passage to trigger mode that the method combined together to colliery load control center electric leakage trouble protection, the branch road that leaks electricity can also be prepared to judge in the measurement of the electric current size that not only can realize leaking electricity.

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