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Sonel MRU-10 Handheld Earth Resistance Meter CAT IV
It allows to:
- measure earthing resistance using auxiliary electrodes,
- measurement of resistance of auxiliary electrodes RS and RH,
- measurement of interference voltage,
- measurement in the presence of interference voltage in the power network with frequency 50 Hz and 60 Hz,
- selection of maximum measuring voltage (25 V and 50 V),
- indication of battery state.
Measurement of interference voltage UN (RMS)
Range | Resolution | Accuracy |
0...100 V | 1 V | ±(10% m.v. + 1 digit) |
Measurement of earthing resistance (method 3-pole)
measurement range to IEC 61557-5:2007: 0,53 Ω...9999 Ω (for 50 V)
Range | Resolution | Accuracy |
0,00...19,99 Ω | 0,01 Ω | ±(3% m.v. + 3 digits) |
20,0...199,9 Ω | 0,1 Ω | |
200...1999 Ω | 1 Ω | ±5% m.v. |
2000...9999 Ω | 1 Ω | ±8% m.v. |
- measurement current: under short circuit >20 mA,
- voltage on open terminals: selectable 25 V AC or 50 V AC,
- frequency of measurement current: 125 Hz (for networks 50 Hz) or 150 Hz (for 60 Hz),
- selection of measuring frequency in settings.
Measurement of earthing resistance (method 2-pole)
Range | Resolution | Accuracy |
0,01...19,99 Ω | 0,01 Ω | ±(3% m.v. + 3 digits) |
20,0...199,9 Ω | 0,1 Ω | |
200,0...1999 Ω | 1 Ω | ±5% m.v. |
2000...9999 Ω | 1 Ω | ±8% m.v. |
Measurement of earthing resistance (method 2-pole) RH and RS
Range | Resolution | Accuracy |
0...999 Ω | 1 Ω | ±8% m.v. |
1,00...9,99 kΩ | 0,01 Ω | |
10,0...19,9 kΩ | 0,1 Ω |
Electric security:
- type of insulation: double, according to EN 61010-1 and IEC 61557,
- measurement category: CAT IV 150 V acc. to EN 61010-1,
- protection class acc. to EN 60529: IP67.
Rated operational conditions:
- operation temperature: -10...+50°C,
- storage temperature: -20...+60°C,
- humidity: 20...90%.
Other technical data:
- LCD display: segment, backlit,
- dimensions: 221 x 102 x 62 mm,
- number of measurements (RE3P) carried out of set of batteries: > 3000
View Datasheets
Sonel MRU-10 Earth Resistance Meter datasheet01556
Earth Resistance Testers