... and ISO14001 approval. 2. CE passed. 3. Professional manufacturer. 4. Reasonable packing. DIGITAL INSTRUMENTS CasingsHigh grade ... phase voltage, three-phase current, active power, reactive power, apparent power, frequency, power factor and 4-quadrant energy etc; ... input capabilities: Current, Voltage, Frequency, Active power, Reactive power, Cos inductive and capacitive Energy consumption.TypeFrame Size ...