Voltage loopback test circuit

• Main Authors: LIN SHENGJI, YE YINGQIAO, WEN ZUOREN, LIN YONGYU, YANG LEI, WANG YU, FANG LIYUN, LI JING, ZHANG KE, ZHENG PU, SI JIE, SHI FANGLEI, GAO XIANG, YU YI, HUANG XIANGYUN, WANG XINGJIE, DAI XUZHONG, GENG XIAOWEI, CHEN HAIPING, XIA YINHAI
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2017
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model discloses a voltage loopback test circuit, including box and electric power return circuit, the electric power return circuit sets up in the box, the electric power return circuit includes: pressure circuit output terminal for be coupled with external secondary equipment's pressure circuit, input regulating unit for be coupled with external power source, the control unit is coupled in input regulating unit, control relay K1, the voltmeter, the one end of voltmeter is coupled in pressure circuit output terminal, and the other end has been coupled voltage measurement change over switch. The utility model discloses a voltage loopback test circuit, through setting up can avoid just having switched on the time of input regulating unit, problem that the voltmeter excessive pressure damaged, and can realize intelligent measuring voltage through setting up of control relay K1 and the control unit, and can be through the voltage measurement who switches the out -phase unit of realization through sett