A. Working conditions
1. Power supply: AC 220V±10%, 50Hz
2. Working environment: Temperature -10℃～40℃;Humidity: ≤85%
3. Atmosphere: 86-106kPa

B. Output power supply
1. AC voltage: 0-220V/3A Adjustable
2. AC current: 0-100A/7V (200A can be customized); 0-20A/25V Adjustable;0-5A/5V Adjustable
3. DC voltage: 0-220V/3A Adjustable
4. DC current: 0-20A/25V
5. Fixed voltage output: DC 24V/48V/110V/220V
6. Current/Voltage accuracy: ±1%.

C. Performance Index
1. Ammeter and voltmeter: 41/2 digit.
2. Digital millisecond meter: 0-99.9999s (999.999s can be customized) Resolution: 0.1ms.

D. Functions
1. Measure relay: Measure start value, return value and drop-off to pick-up ratio of current, voltage relay.
2. Time relay: Measure start value, return value and action time.
3. Intermediate relay: Measure all kinds of coil with start. Remain start value, return value, holding value and action time of coil intermediate relay.
4. Reclosing relay: Charge test of capacitance, charge time, reclosing time and middle components test.
5. Differential relay: DC Excitation test, Braking test, Volt-ampere characteristic test.
6. Other common relays and LV circuit breaker.