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Sonel MRU-10 Handheld Earth Resistance Meter, CAT IV

Ground Resistance Tester 

Features:

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

01556

Earth & Ground Resistance Testers

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