... (phase voltage)PT ratio:1~10Input power consumption:≤0.25VA(220V) ≤0.60VA(600V)Continuous overload: 800VCurrent(RMS)/CircuitMeasurement range ... voltage = average phase voltage, negative sequence voltage is 0, DO in a disconnected state; when the phase sequence fault (UA, ... UC, UB), the positive sequence voltage is 0, negative sequence voltage ...