MRU-21 Earth Resistance Meter
2 in stock
Possible measurements:
- earth resistance measurment with 3-pole method,
- measurement of continuity of equipotential bondings and protective conductors with auto-zero function – with current 200 mA,
- resistance measurement using 2-pole method.
₨0
2 in stock
CompareEarth Resistance Meter
| Weight | 1.4 kg |
|---|---|
| Dimensions | 29 × 22 × 7 cm |
Measurement of earthing resistance
measurement range to IEC61557 – 5:
0,50 Ω…1,99 kΩ for Un=50 V;
0,68 Ω…1,99 kΩ for Un=25 V;
| Range | Resolution | Accuracy |
| 0,00…9,99 Ω | 0,01 Ω | ±(2% m.v. + 3 digits) |
| 10,0…99,9 Ω | 0,1 Ω | |
| 100…999 Ω | 1 Ω | |
| 1,00k…1,99 kΩ | 0,01 kΩ |
• 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
Measurement of interference voltage UN (RMS)
| Range | Resolution | Accuracy |
| 0…100 V | 1 V | ±(2% m.v. + 3 digits) |
• measurement for DC and AC 45…65 Hz
Measurement of resistance of auxiliary electrodes RH i RS
| Range | Resolution | Accuracy |
| 0…999 Ω | 1 Ω | ±(5% (RS+RE+RH) + 3 digits) |
| 1,00k…9,99 kΩ | 0,01 kΩ | |
| 10,0k…50,0 kΩ | 0,1 kΩ |
Measuremet of continuity of equipotential bondings and protective conductors
measurement range to IEC61557 – 4: 0,13 Ω…199 Ω
| Range | Resolution | Accuracy |
| 0,00…9,99 Ω | 0,01 Ω | ±(2% m.v. + 3 digits) |
| 10,0…99,9 Ω | 0,1 Ω | |
| 100…199 Ω | 1 Ω |
- measuring method: technical 2-pole method,
- max. voltage on open terminals: 13 V,
- measurement current: under short circuit >200 mA,
- auto-zero function for measurement leads
Electric security:
- type of insulation: double, according to EN 61010 – 1and IEC 61557
- measurement category: CAT IV 300 V acc. to EN 61010 – 1
- protection class acc. to EN 60529: IP54
Rated operational conditions:
- operation temperature: -10…+55°C
- storage temperature: -20…+70°C
- humidity: 20…80%
Other technical data:
- LCD display: segment, backlit
- interface: USB,
- number of measurements carried out of set of batteries: > 1000 (5 Ω, 2 meas./min.)
- warranty: 2 years
- dimentions: 288 x 223×75 mm
- weigth: 1,4 kg
Brand
SONEL
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UT275 Clamp Earth Ground Testers
UT270 series can measure the grounding system of a circuit without disconnecting the ground wires and auxiliary electrode. It clamps the grounding circuit and measures the grounding resistance fast and safely. It can measure resistance as low as 0.01Ω and has a high resolution of 0.001Ω. It has overload alarm function, which can help to setup the alarm value within the ranges. The clamp has double insulation, which strengthens the anti-interference.
SKU: 90000
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It allows to:
- measure earthing resistance using auxiliary electrodes,
- measurement of resistance of auxiliary electrodes RS and RH,
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- selection of maximum measuring voltage (25 V and 50 V),
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It allows to take the measurements of:
- earthing resistance using auxiliary electrodes,
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Additionally:
- 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 50Hz, 60Hz,
- selection of maximum measuring voltage (25V and 50V),
- introducing the distance between the electrodes for the resistivity in metres (m) and feet (ft),
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- calibration of clamp used,
- data transmission to the computer (USB),
- indication of battery state.
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