(A) Overview EPWH type active power transmitter, EPKH type reactive power transmitter is a measurement of active and reactive power of the instrument, EPWWH type of active / active energy, EPKKH type reactive power / reactive power combination transmitter is a measure both active (or reactive) instrument has a dual function of energy is energy metering, energy-saving electricity billing automation and computer support equipment. EP Series power transmitter technical indicators in full compliance with JJG 596-89 "electronic meter" requirement, the relative error is less than 0.5%, and has excellent temperature characteristics and long-term stability, together with the power display recording device, both with the grid scheduling system, and is ideal for solid energy meter. The transmitter is suitable for a frequency of 50Hz, 60Hz single phase and special frequency, three-phase (balanced and unbalanced loads) lines, power to open or broken appliances optocoupler electrode contact form two pulse outputs to suit different RTU and power recording devices. Digital output and input is measured active (or reactive) power corresponding to the output leads are four wires, two-way digital output positive and negative electrical energy in both directions. (B) the type, specification EPWH201 --- three-phase three-wire active power transmitter EPKH201 --- three-phase three-wire active power transmitter EPWWH201 --- three-phase three-wire active / active energy combination transmitter EPKKH201-- - Three-phase three-wire reactive power / reactive power combination transmitter EPWH301 --- three-phase four-wire active power transmitter EPKH301 --- three-phase four-wire reactive power transmitter EPWWH301 --- Three-phase four-wire active / active energy combination transmitter EPKKH301 --- phase four-wire reactive power / reactive power combination transmitter power transmitter * EP series active energy / reactive energy accuracy: 1.0% relative error (three ) Product Attributes Accuracy class: 0.5% RO Packaging: individually wrapped Installation: rail mounting Delivery: three days working conditions: temperature -10-55 ° C, relative humidity: less than or equal to 95% non-condensing brand :: Jin Han Origin: Zhejiang Haiyan