... , chemical industry, electric power measure of the department. Main Functions and Features: 1, Test single-phase and three-phase induction type, mechanical and ... meter; 2, Real-time field measurement three-phase voltage, current, active power, reactive power, phase, power factor, frequency, power, and ... 300mm×300mm×300mmHost quality 3.5Kg GF3121 wireless three-phase kWh meter site verification