It is a single-phase program controled voltage and current source, designed to use in meter test systems or other automatic test systems Features: ·High precision and long term stability ·Excellent price / performance ratio ·Universal unit for many applications ·RS232 interface, can be used with computer system ·Can be operated manually via special keyboard Specifications: Item name ExplanationSpecificationsPower supply Operating temperature range Function temperature range Standard Standard 220V±15% -10 ... +40 -10 ... +50Resolution of voltage/current Distortion Output frequency Resolution of frequency Range of phase angle Resolution of phase angle Stability of output voltage Stability of output current Full range Linear load Principal wave 0.01% <0.3% 45Hz ... 65Hz 0.001 Hz 0°... 360° 0.01° ≤0.02% / 20 min ≤0.02% / 20 min Range of output voltage Power of output voltage Peak current of voltage Harmonic output Through frequency bandwidth2-21 times24V ... 288V 400VA 0.7A 0 ... 100% 30Hz ... 2kHz(-3dB) Range of output current Power of output current Peak voltage of current Harmonic output Through frequency bandwidth 2-21 times 1mA ... 120A(max:230A) 800VA 8V 0 ... 100% (adjustable) 30Hz ... 2kHz(-DimensionsW×H×D600mm×650mm×650mm