... meters with completely computer management system4) Automatic voltage and current range selection5) Measure low voltage and current transformer (CT) ratio ... 0.05, 0.12) Voltage range: 60V, 100V, 200V, 400V3) Current: direct measure: 1A, 5A, clamp transformer 100A (200A, ... 500A, 1,000A) is optional4) Voltage, current and power measurement accuracy ...