The GF302D portable meter test equipment is used for grid corporation of metrology and energy test center, management department of power supply bureau, national energy metrology of testing authorities, and also used to test all kinds of single/three phase kWh meter of industries and mining enterprises as well as electricity meter manufacturers. Meanwhile, the portable meter test equipment also can be used as one high precision standard power source, voltage source and current source, harmonic source. Portable design, used in the laboratory or on site to auto check energy meter error. It can output from 0 to 600V and 1mA to 120A, frequency from 40Hz to 70Hz, Phase shift from 0 to 360.00 degree, power factor from -1.00000 to 1.00000. Energy pulse constant imp/kWh/kVAh/kvarh or kW/kVA/kvar/imp etc.