Earthleakage protective equipment with adjustable

• Main Authors: TANG RUIYIN, QIAN LI, WANG JINGBO, WU BAOJIANG, XU JINGANG
• Format: Patent
• Language: English
• Published: 16.09.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

(B, ) the utility model provides a simple structure's earthleakage protective equipment with adjustable including electric leakage signal acquisition element, power cut -off unit, also includes voltage comparing unit, direct current power supply unit, electric leakage signal acquisition element includes zero sequence current transformer, resistance, diode (b) (b) D41 (b) (b), diode (b) (b) D42 (b) (b), electric capacity, the varistor ware, the one end of resistance, all positive pole (b) (b) the LL4a (b) (b) with zero sequence current transformer is be electrically connected for diode (b) (b) D41's (b) (b) anode, diode (b) (b) D41's (b) (b) negative terminal, all the one end with the varistor ware is be electrically connected for the one end of electric capacity, zero sequence current transformer's negative pole (b) (b) LL4b (b) (b), the other end of resistance, the other end of electric capacity, the equal ground connection of the other end of varistor ware, the partial pressure exit of varistor ware is electrically connected with diode (b) (b) D42's (b) (b) anode, diode (b) (b) D42's (b) (b) negative terminal is electrically connected with voltage comparing unit's voltage comparater's input, voltage comparater's output and power cut -off unit are electrically connected, voltage comparater, power cut -off unit all are electrically connected with the direct current power supply unit. (B, )