Instantaneous switching of test current and monitoring device based on PLC control

The utility model provides an instantaneous switching of test current and monitoring device based on PLC control, 6 times of current path including first relay and control, 1 times of current path ofsecond relay and control, measure instrument module, touch -sensitive screen, PLC controller acquire measuring magnitude of voltage and current value and obtain power and power factor to show data transmission to touching screen display, and receive instantaneous two relays of switching command control that come from the touch -sensitive screen and carry out instantaneous switching, the PLC controller breaks off for the time of predetermineeing, second relay according to the first relay closure of instantaneous switching command control, acquires 6 times of current path's measured data, afterthe schedule time, controls the disconnection of first relay, and the second relay is closed, acquires 1 times of current path's measured data. The device has transient state testing capabilities based on PLC control, but accu