| Model | HT9910 | HT9912 | HT9922 | 
| Display | 95mm*20mm monochrome LCD | 
| Test Parameters | Leakage current/insulation IR | Withstand voltage / leakage current / insulation resistance | 
| Voltage Resolution | 1V | 
| Voltage Accuracy | 3% | 
| Frequency | 50Hz/60Hz | 
| AC Output | AC 0.5kV~5kV | AC 0.5kV~5kV | AC 0.5kV~5kV | 
| Leakage Current | AC 12mA | 
| DC Output | ——– | DC 0.5kV~6kV | DC 0.5kV~6kV | 
| Leakage Current | ——– | DC 6mA | 
| Current Resolution | 1μA | 
| Current Accuracy | ±(3%+2 counts) | 
| Voltage Ramp Up Time | 0.1s~999.9s | 
| Test Time | 0.1s~999.9s | 
| Arc Test Function | 1~9 level | 
| Insulation IR Range | ——— | ——— | 100kΩ~99GΩ | 
| Voltage Output | ——— | ——— | 0.1kV~1.0kV | 
| Memory Group | 3 group | 
| Interface | PLC/485 interface(Standard), RS232C (Optional) | 
| Power Supply | Voltage:198V-240V AC, Frequency:47Hz-63Hz,Rated power:100VA | 
| Dimensions | 374mm*280mm*99mm;Gross weight: 7.5KG | 
| Accessories | HT9950 High-voltage test lead, HT9800 Communication cable,HT9900 sampling line |