| 摘要 |
The present invention relates to a terminal for checking errors of an input current and an input voltage and, more particularly, to the terminal capable of designating an error range by changing the size of a variable resistor. The terminal includes a body, an input current error checking unit, an input voltage error checking unit, a control unit, and an information device. [Reference numerals] (AA,CC) Voltage error detection;(BB,DD) External power supply;(EE,II) Photo coupler;(FF,GG,HH) CT sensor;(JJ) Image voltage detection transformer;(KK) A phase current;(LL) B phase current;(MM) C phase current;(NN) A phase voltage;(OO) B phase voltage;(PP) C phase voltage;(QQ) N phase voltage |
