MAIN FEATURES *The test bench can be operated by computer or keyboard. *Adopting wide impulse technology so that the output current, voltage enlarge efficient over 90%. *Output current and voltage softly start and stop. *Automatically test and alarm and protect output current and voltage, *output current range automatic exchange. *Excellent stability and reliability. *Large output power: voltage (200VA-1000VA), current (200VA-1000VA) *Can test same specifications with different meter constant meters simultaneously. *Separate voltage output. *Automatically find black mark for starting and creeping test. *Having standard RS485 communication port. *Having special PC administrative software under Windows, so that to save, check and print data. MAIN TECHNICAL *Accuracy: 0.1 0.2 *Voltage range: 220V. *Current range: 0.1A 0.25A 0.5A 1A 2.5A 5A 10A 25A 50A 100A (120)A *Current and voltage adjusting range: 0~120%. * Frequency: 45~65Hz, fine adjustment 0.1Hz. *Range of phase move: 0~360.00, fine adjustment: less than 0.10. *Display: 3 1/2 LCD. *Communication port: RS232/485. *Meter calibrated: 6pcs/ 12pcs/ 24pcs / 40pcs. *Working voltage: 220V+-10% *Working ambient: temperature 20+-5 degree; humidity: less than 85% *Meter calibrated:5pcs/ 12pcs /24pcs or customized.