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上海楹點檢測設備有限公司
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MRU-105 MRU-106接地電阻測試儀
MRU-105 / 106接地電阻測試儀
指數:
WMGBMRU105
MRU-105 / 106接地電阻測試儀
指數:
WMGBMRU105
Earth Resistance and Resistivity Meter
The MRU-105 and MRU-106 (for 60 Hz) are portable meters for the earth resistance and earth resistivity measurement (Wenners method). The instruments can measure resistance using 2, 3, or 4 poles method. Measurements can be simplified using current clamps. The very high immunity for existing interference voltage AC + DC at which measurement is still performed: 24 V (68 V-p-p) but also measurement of existing interference voltage up to 40 V is unique functionality of the meters. Moreover meters measure the resistance of the probes and calculate automatically the error coming from probe's resistances.
指數：
WMGBMRU105
接地電阻和電阻率測試儀
該MRU-105和MRU-106（60赫茲）是接地電阻和接地電阻率測量（Wenners法）便攜式儀表。該儀器可使用2個，3個或4較法測量電阻。測量可以使用電流鉗進行簡化。對于現有的干擾電壓的AC+ DC很高*力在這仍然是進行測定：現有干擾電壓高達40 V24 V（68 V-P-P），而且還測量了米的*特功能。此外米測量探針的阻力并自動計算從探頭的電阻來的錯誤。
The meters MRU-105 and MRU-106 (for 60 Hz) additionaly can be powered from Ni-MH batteries or standard C size, and the test results can be stored in the internal memory and transmited to PC via USB - cable.
Measurement of earth resistance using a three- or four- pole technique:
?ability to perform measurements of multiple earth system using three-pole
?technique without disconnecting earth system measured (with the application of clamps),
?supervision of the measurement conditions (eg. voltages, impact resistance measurement electrodes RH i RS and battery state/monitor)
?high immunity of interference voltage.
Measurement of ground resistivity (Wenner’s method):
?the earth resistivity measurement with the possibility to introduce the distance between electrodes, automatic calculation and displaying the resistivity.
Measurement of resistance using a two- or four-pole technique.
Built-in battery charger.
Memory for 300 measurement results with an ability to transfer the data to a PC.
Meter meets the requirements of the standard EN 61557.
Electric security:
?type of insulation: double, according to EN 61010 - 1 and IEC 61557
?measurement category: CAT III 300 V acc. to EN 61010 - 1
?protection class acc. to EN 60529: IP54
Other technical data:
?power supply: alkaline batteries LR14 (C) (5 pcs.) or Ni-MH battery package
?charger power supply: 100...250 V, 50...60 Hz
?display: LCD, 20 mm high
Rated operational conditions:
?operating temperature: 0...+40°C
?maximum interference voltage AC + DC, at which the measurement is still performed: 24 V (68 Vp-p)
?test current for resistance value ≤ 100 Ω: 225 mA
?maximum measured voltage: 40 V
?test current frequency: 128 Hz
Measurement of earth resistance:
measurement range in accordance with IEC61557 - 5: 0,12 Ω...20 kΩ
Range Resolution Accuracy
0,00...9,99 Ω 0,01 Ω ±(3% m.v. + 3 digits)
10,0...99,9 Ω 0,1 Ω ±(2% m.v. + 2 digits)
100...999 Ω 1 Ω
1,00...9,99 kΩ 0,01 kΩ
10,0...20,0 kΩ 0,1 kΩ
Measurement of earth resistance using clamps:
measurement range in accordance with IEC61557 - 5: 0,16 Ω...20 kΩ
Range Resolution Accuracy
0,00...9,99 Ω 0,01 Ω ±(8% m.v. + 3 digits)
10,0...99,9 Ω 0,1 Ω ±(8% m.v. + 2 digits)
100...999 Ω 1 Ω
1,00...9,99 kΩ 0,01 kΩ
10,0...20,0 kΩ 0,1 kΩ
Measurement of ground resistivity:
Range Resolution Accuracy
0,00...9,99 Ωm 0,01 Ωm ±(3% m.v. + 3 digits)
10,0...99,9 Ωm 0,1 Ωm ±(2% m.v. + 2 digits)
100...999 Ωm 1 Ωm
1,00...9,99 kΩm 10 Ωm
10,0...99,9 kΩm 100 Ωm
100...999 kΩm 1 kΩm
?m.v.”- measured value”