... also calibrate frequency meter, phase meter, power factor meter, transducer, power load transformer, and power relay. With standardized cabinet and featured by ... & fixed frequency;2.3. Multi-function standard meter with power, electric energy, AC/DC voltage, AC/DC current standards ... current output wave≤1%;3.10. Output voltage, current, power stability 0.02%/2(minutes);3.11. Output voltage, current ...