Insulation resistance measurement (two-lead)
Measurement range acc. to IEC 61557-2 for RISOmin=UISOnom/IISOmax…1 TΩ (IISOmax=1 mA)
| Range | Resolution | Accuracy |
| 0,0…999,9 kΩ | 0,1 kΩ | ±(3% m.v. + 20 digits) |
| 1,000…9,999 MΩ | 0,001 MΩ | |
| 10,00…99,99 MΩ | 0,01 MΩ | |
| 100,0…999,9 MΩ | 0,1 MΩ | |
| 1,000…9,999 GΩ | 0,001 GΩ | |
| 10,00…99,99 GΩ | 0,01 GΩ | |
| 100,0…999,9 GΩ | 0,1 GΩ |
Values of measured resistance depending on measurement voltage
| Voltage UISO | Measurement range |
| 100 V | 50 GΩ |
| 200…400 V | 100 GΩ |
| 500…900 V | 250 GΩ |
| 1000…2400 V | 500 GΩ |
| 2500 V | 1000 GΩ |
Continuity measurement of protective connections and equipotential bonding with 200 mA current.
Measurement range acc. to EN 61557-4: 0,10…999 Ω
| Range | Resolution | Accuracy |
| 0,00…19,99 Ω | 0,01 Ω | ±(2% m.v. + 3 digits) |
| 20,0…199,9 Ω | 0,1 Ω | |
| 200…999 Ω | 1 Ω | ±(4% m.v. + 3 digits) |
DC and AC voltage measurement
| Range | Resolution | Accuracy |
| 0…299,9 V | 0,1 V | ±(3% m.v. + 2 digits) |
| 300…750 V | 1 V | ±(3% m.v. + 2 digits) |
The acronym “m.v.” stands for a “measured reference value”.
Electrical safety:
Other technical specifications:

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