Simulated electric leakage detection device

模拟漏电检测装置

Abstract

本实用新型揭示了一种模拟漏电检测装置,包括:模拟漏电信号发生电路、双触点按键、零序互感器、信号处理电路、中央控制器和脱扣器。模拟漏电信号发生电路产生方波信号;双触点按键的一路进线接模拟漏电信号发生电路输出的方波信号、该路出线接零序互感器的初级线圈;另一路进线接中央控制器,该路出线分别接电源与地;零序互感器的次级线圈接信号处理电路;信号处理电路对零序互感器输出的信号进行选择以及放大,将得到的信号输出给中央控制器;中央控制器对信号处理电路输出的信号进行采样转换以及计算,计算出当前的模拟漏电电流值的大小,并与参考模拟漏电电流进行对比;脱扣器连接到中央控制器,根据中央控制器的指令动作。
The utility model discloses a simulated electric leakage detection device, which comprises a simulated electric leakage signal generating circuit, a double-contact key, a zero sequence transformer, a signal processing circuit, a central controller and a tripper. The simulated electric leakage signal generating circuit generates square wave signals, an inlet wire of one path of the double-contact key is connected with the square wave signals outputted by the simulated electric leakage generating circuit, an outlet wire of the path is connected with a primary coil of the zero sequence transformer, an inlet wire of the other path of the double-contact key is connected with the central controller, an outlet wire of the other path is respectively connected with a power supply and the ground, a secondary coil of the zero sequence transformer is connected with the signal processing circuit, the signal processing circuit selects and amplifies signals outputted by the zero sequence transformer and outputs obtained signals to the central controller, the central controller samples, converts and computes signals outputted by the signal processing circuit, computes a current simulated electric leakage current value and compares the current value with reference simulated electric leakage current, and the tripper connected to the central controller acts according to instructions of the central controller.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103941144-AJuly 23, 2014万高(杭州)科技有限公司一种基准电压源漏电检测电路
    CN-103941144-BSeptember 21, 2016万高(杭州)科技有限公司一种基准电压源漏电检测电路