The GF6019D high precision DC energy meter test equipment consists of an DC voltage standard source, DC current standard source and DC power source. (up to 1150V/600A) and built-in DC electronic reference standard of accuracy class 0.05%. Characteristic features of the GF6019D are its wide measuring range, high accuracy and high tolerance to unwanted external influences. The equipment offers high functionality combined with an excellent menu guided operation via built-in keyboards and colored 8" LCD-display. It can test DC energy meter basic error, starting test, creep test, error of time of day