Sonel MRU-21 接地电阻/电阻率仪

  • 制造商: SONEL
    Model: MRU-21
    • 报价要求 报价要求
  • 联系
  • 价格合理详情请致电

    热线:   (+84) 966520220

    电话:  +84 (24) 62923267


      

Possible measurements:

  • earth resistance measurment with 3-pole method,
  • measurement of continuity of equipotential bondings and protective conductors with auto-zero function - with current 200mA,
  • resistance measurement using 2-pole method.


Details

Measurement of earthing resistance 
measurement range to IEC61557-5: 
0,50Ω...1,99kΩ for Un=50V; 
0,68Ω...1,99kΩ for Un=25V;

 

Range Resolution Accuracy
0,00...9,99Ω 0,01Ω
±(2% m.v. + 3 digits)
10,0...99,9Ω 0,1Ω
100...999Ω
1,00k...1,99kΩ 0,01kΩ

• measurement current: under short circuit >20mA, 
• voltage on open terminals: selectable <25v ac="" or="" 50v="" ac="" br=""> • frequency of measurement current: 125Hz

Measurement of interference voltage UN (RMS)

Range Resolution Accuracy
0...100V 1V ±(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...999Ω
±(5% (RS+RE+RH) + 3 digits)
1,00k...9,99kΩ 0,01kΩ
10,0k...19,9kΩ 0,1kΩ


Measuremet of continuity of equipotential bondings and protective conductors 
measurement range to IEC61557-4: 0,13Ω...199Ω 

 

Range Resolution Accuracy
0,00...9,99Ω 0,01Ω
±(2% m.v. + 3 digits)
10,0...99,9Ω 0,1Ω
100...199Ω

• measuring method: technical 2-pole method,
• max. voltage on open terminals: 13V,
• measurement current: under short circuit >200mA,
• auto-zero function for measurement leads

Electric security:
- type of insulation: double, according to PN-EN 61010-1and IEC 61557
- measurement category: CAT IV 300V acc. to PN-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 (5Ω, 2 meas./min.)
- warranty: 3 years
- dimentions: 288x223x75mm
- weigth: 1,4kg

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