| Insulation Resistance Measurement |
| Test voltage | Range | Accuracy (± reading) |
| 250V | 200 kΩ to 5 GΩ
5 GΩ to 50 GΩ
| 5%
20% |
| 500V | 200 kΩ to 10 GΩ
10 GΩ to 100 GΩ | 5%
20% |
| 1000V | 200 kΩ to 20 GΩ
20 GΩ to 200 GΩ | 5%
20% |
| 2500V | 200 kΩ to 50 GΩ
50 GΩ to 500 GΩ
| 5%
20% |
| 5000V | 200 kΩ to 100 GΩ
100 GΩ to 1 TΩ
| 5%
20% |