MRU-20
- Description
Product withdrawn from the offer
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.
Additionally:
- AUTO-OFF function after 5 minutes,
- indication of battery state.
- Technical Specification
It allows to take:
- earth resistance measurement using auxiliary probes with 3-pole method,
- resistance measurement using 2-pole method,
- measurement of continuity of equipotential bondings and protective conductors (meeting the requirements of IEC 61557 - 4) with auto-zero function – with current 200 mA.
Additionally:
- AUTO-OFF function after 5 minutes,
- indication of battery state.
Measurement of earthing resistance
measurement range to IEC61557 - 5:- 0,50 Ω...1,99 kΩ Un=50 V;
- 0,68 Ω...1,99 kΩ dla 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 1,00...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 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 Measurement of interference voltage UN (RMS)
Range Resolution Accuracy 0...100 V 1 V ±(2% m.v. + 3 digits) Measuremet of continuity of equipotential bondings and protective conductors
measurement range to IEC61557 - 4: 0,13...199 ΩRange 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 leads0,13 Ω...199 Ω
Electric security:
- type of insulation: double, according to IEC 61010 - 1and IEC 61557
- measurement category: CAT IV 300 V acc. to IEC 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:
- power supply: alkaline batteries or NiMH rechargeable batteries, size AA (8 pcs)
- LCD display: segment, backlit
- weight with batteries: approx. 1,3 kg
- dimensions: 260 x 190 x 60 mm
- electromagnetic compatibility: according to IEC 61000 - 6 - 3 and IEC 61000 - 6 - 2
- Files