... (-20% to +15%) 2) Current: 1.5 (6.0) A, 1 Specifications: 1) Voltage: 57.5/100V, 110/190V, 220/380V (-20 ... , 10 (100) A 3) Frequency: nominal 50Hz +/- 5 % (option: 60Hz +/- 5 %) 4) Accuracy: class 0.5, class 1 (for kW/h) 5) Starting current: < 0 ... standards: IEC 60687, IEC 61036, IEC 61107 10) With anti-tamper features 11) Operation software: Windows9X, WindowsXP Three Phase Multi-Function TOU Meter