| SPECIFICATIONS | 
| MODEL | 7470 | 7472 | 7473 | 7474 | 
| Output Rating | 10KVAC/20mA | 12KVDC/10mA | 20KVAC/10mA  | 20KVDC/5mA | 
| AC WITHSTAND VOLTAGE (7470&7473) | 
|   | Range | Resolution | Accuracy | 
| Output Voltage, ACV (for 7473) | 0 - 20000 | 10 | ±(2% of setting + 20V) | 
| Output Voltage, ACV (for 7470) | 0 - 10000 | 10 | ±(2% of setting + 10V) | 
| Output Frequency | 50Hz/60Hz ±100ppm, User Selection | 
| Output Waveform | Sine Wave ,THD.<2% (Resistive Load), Crest Factor = 1.3 - 1.5 | 
| Output Regulation  | ± (1% of output + 10V), From no load to full load  | 
| SETTINGS | 
| Hi / Lo -Limit AC Current, mA (for 7473) | 0 - 9.999 | 0.001 | ±(2% of setting + 2counts) | 
| Hi / Lo -Limit AC Current, mA (for 7470) | 0 - 9.999/10.00 - 20.00 | 0.001/0.01 | ±(2% of setting + 2counts) | 
| Ramp Up Time, second | 0.1 - 999.9 | 0.1 | ±(0.1% + 0.05sec) | 
| Ramp Down Time, second | 0.0 - 999.9 | 0.1 | 
| Dwell Time | 0, 0.3 - 999.9 sec (0=continuous) | 0.1 | 
| 0, 0.1 - 999.9 min (0=continuous) | 0.1 | 
| 0, 0.1 - 999.9 hr (0=continuous)  | 0.1 | 
| Cycle Test | 0 - 9999 Times, (0=continuous)  | 
| Arc Detection | Range 1 - 7 > 15kV , Range 1 - 9 < 15kV  | 
| AC Current Offset, mA | 0 - 2.000 or Auto Set ( Option ) | 
| MEASUREMENT | 
| AC Voltage, KV (for 7473) | 0 - 20.00 | 0.01 | ±(2% of reading + 2counts) | 
| AC Voltage, KV (for 7470) | 0 - 10.00 | 0.01 | ±(2% of reading + 2counts) | 
| AC CurrentRange, mA | 0-3.500 | 0.001 | ±(2% of reading + 3counts) | 
| 3.00-10.00 (for 7473) | 0.01 | 
| 3.00-20.00 (for 7470) | 0.01 | 
| DC WITHSTAND VOLTAGE (7472&7474) | 
| Output Voltage, DCV (for 7474) | 0 - 20000 | 10 | ±(2% of setting + 20V) | 
| Output Voltage, DCV (for 7472) | 0 - 12000 | 10 | ±(2% of setting + 10V) | 
| Output Ripple | <5%(在20KV/5000μA for 7474, 12KV/9999μA at Resistive Load for 7472) | 
| SETTINGS | 
| Hi / Lo -Limit DC Current, μA (for 7474) | 0.0 - 999.9/1000 - 5000 | 0.1/1 | ±(2% of setting + 2counts) | 
| Hi / Lo -Limit DC Current, μA (for 7472) | 0.0 - 999.9/1000 - 9999 | 0.1/1 | ±(2% of setting + 2counts) | 
| Ramp Up Time, second | 0.4 - 999.9 | 0.1 | ±(0.1% + 0.05sec) | 
| Ramp Down Time, second | 0.0,1.0 - 999.9  | 0.1 | 
| Dwell Time | 0, 0.4 - 999.9 sec (0=continuous) | 0.1 | 
| 0, 0.1 - 999.9 min (0=continuous) | 0.1 | 
| 0, 0.1 - 999.9 hr (0=continuous) | 0.1 | 
| Cycle Test | 0 - 9999 Times, (0=continuous)  | 
| Arc Detection | Range 1 - 9 (9 is the most sensitivity)  | 
| DC Current Offset, μA | 0.0 - 200.0 or Auto Set (Option ) | 
| Ramp High Current | ON/OFF, User Selection | 
| Charge - Low Current, μA | 0.0 - 350.0 or Auto Set  | 
| Discharge Time | < 200 msec | 
| Maximum Capacitive Load | 1.5μF < 2KV 0.15μF < 8KV 0.12μF < 14KV 0.08μF < 20KV | 
| 0.28μF < 4KV 0.15μF < 10KV 0.1μF < 16KV | 
| 0.18μF < 6KV 0.12μF < 12KV 0.08μF < 18KV | 
| MEASUREMENT | 
| DC Voltage, KV (for 7474) | 0 - 20.00 | 0.01 | ±(1.5% of reading + 2count) | 
| DC Voltage, KV (for 7472) | 0 - 10.00 | 0.01 | ±(1.5% of reading + 2count) | 
| DC Current Range, μA | 0-350.0 | 0.1 | ± (2% of reading + 3counts) | 
| 300-3500  | 1 | 
| 3000 - 5000 (for 7474)3000-9999 (for 7472)
 | 10 | 
| GENERAL | 
| Input Voltage AC | 115/230VAC ± 15% , 50/60Hz ± 5% Fuse: 6.3A Slow | 
| PLC Remote Control | Input : Test , Reset , Memory1.2.3 ,Interlock  | 
| Output : Pass , Fail , Processing  | 
| Safety | Smart-GFI Function (<1mA) | 
| Memory | 50 memories | 
| Display | 20*2 LCD with back light | 
| Key Lock | To prevent unauthorized alteration of the test Parameters | 
| Calibration | Build-in software and external calibrated meters | 
| Interface | RS232/GPIB /Printer Card (Option) | 
| Alarm Volume Setting | 10 ranges set by the numeric keys on the front panel | 
| Environment | 0-40℃, 20-80%RH | 
| Dimension  | 430mm(W)×133mm(H)×400mm(D)  | 
| Net Weight | 24Kg | 24Kg | 22.5Kg | 23Kg | 
| STANDARD ACCESSORIES | 
| Power Cord (10A) | ×1 | 
| Fuses | ×2 (Including a spare contained in the fuse holder) | 
| Interlock Disable Key (1505) | ×1 | 
| Hipot Test Lead ,1.5m (1142) | - | - | ×1 | ×1 | 
| Hipot Test Lead ,1.5m (1143) | ×1 | ×1 | - | - | 
| Hipot Return Lead ,1.8m (1144) | ×1 | ×1 | ×1 | ×1 |