... PD7194H-5K1 X-Series digital power measurement table: Suitable for power grids, automation and control systems for the ... of electrical parameters of current, voltage, frequency, power, power factor and with high accuracy, good stability, anti-vibration can be ... voltage / 1SFrequency: 50HZ ± 10%Expansion: with the extended range of shunt or transformerAuxiliary power supply: AC220V ± 10%, or AC/DC85V ...