Specifications: 1) Connection: direct or CT/PT 2) Standard reference voltage (V): 120/208, 220/380, Specifications: 1) ... Connection: direct or CT/PT 2) Standard reference voltage (V): 120/208, 220/380, 230/400, 240 ... /450 3) Rated frequency: 50/60Hz 4) Meter constant (imp/kWh): 3,200, 1,600, 800 5 ... .3VA 8) Accuracy: class 1 9) Standard: IEC 61036 Three Phase Electronic Meter