Datasheet

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It allows to take the measurements of:
- earthing resistance using auxiliary electrodes,
- earthing resistance using auxiliary electrodes and clamp
(for measurements of multiple earthing)
- earthing resistance using double clamps (for measurement of earthing
when it is impossible to use auxiliary electrodes),
- impulse earth resistance (without disconnecting measured earthing),
- ground resistivity (Wenner method),
- current using the clamp (e.g. leakage) and flexible clamp (Rogowsky coil),
- measurement of continuity of equipotential bondings and protective
conductors (meeting the requirements of IEC 60364-6-61:2000 section
6.12.2) with auto-zero function – with current 200mA.
Additionally:
- measurement of resistance of auxiliary electrodes R and R ,
S H
- measurement of interference voltage,
- measurement of interference frequency,
- measurement in the presence of interference voltage in the power network
with frequency 16 2/3 Hz, 50Hz, 60Hz and 400Hz (with automatic selection
of proper frequency of measuring signal or with manual selection),
- selection of maximum measuring voltage (25V and 50V)
- introducing the distance between the electrodes for the resistivity
in metres (m) and feet (ft),
- memory of 990 measurements (10 banks of 99 cells each),
- calibration of clamp used,
- real time clock (RTC),
- data transmission to the computer (USB),
- indication of battery state.
MRU-200
Electric security:
- type of insulation double, according to EN 61010-1 and IEC 61557
- measurement category CAT IV 300V acc. to EN 61010-1
- protection class acc. to EN 60529 IP54
Rated operational conditions:
- operation temperature -10...+50°C
- storage temperature -20...+70°C
- humidity 20...80%
Other technical data:
- LCD display graphic, backlighted
- interface USB
- number of measurements carried out of set of batteries > 1200
- warranty 24 months
Range
Resolution
Accuracy
0...100V 1V
±(2% m.v. + 3 digits)
Range
Resolution
Accuracy
15...450Hz 1Hz
±(1% m.v. + 2 digits)
Range
Resolution
Accuracy
0,000...3,999
4,0...39,99Ω
40...399,9Ω
400...3999Ω
4,00k...19,99kΩ
Ω
±(2% m.v. + 4 digits)
±(2% m.v. + 2 digits)
0,001
0,01Ω
0,1Ω
1Ω
0,01kΩ
Ω
Range
Resolution
Accuracy
0,00...3,999 *
4,0...39,99Ω
40,0...399,9Ω
400...3999Ω
4,0k...19,99kΩ
Ω
±(2% m.v. + 2 )digits
0,001
0,01Ω
0,1Ω
1Ω
0,01kΩ
Ω
Range
Resolution
Accuracy
0...999
1,00k...9,99kΩ
10,0k...19,9kΩ
Ω
±(5% (R +R +R ) + 8 )
S E H
digits
1
0,01kΩ
0,1kΩ
Ω
Range
Resolution
Accuracy
0,00...3,999 *
4,0...39,99Ω
40...399,9Ω
400...1999Ω
Ω
±(8% m.v. + 3 digits)
±(8% m.v. + 4 digits)
0,001
0,01Ω
0,1Ω
1Ω
Ω
Range
Resolution
Accuracy
±(10% m.v. + 3 digits)
±(20% m.v. + 3 digits)
0,01
0,1Ω
Ω0,00...19,99
20,0...149,9Ω
Ω
Range
Resolution
Accuracy
0,1...99,9mA
1
100...999mA
1
5,00...9,99A
1,2
10,0...99,9A
1,2
100...300A
1,2
±(5% m.v. + 5 digits)
2
unspecified
1
0,1mA
1mA
±(8% m.v. + 5 digits)
±(8% m.v. + 3 digits)
1,2
1,00...4,99A
0,01A
0,01A
0,1A
1A
±(5% m.v. + 5 digits)
Range
Resolution
Accuracy
±(2,5% m.v. + 3 digits)
0,1
1Ω
Ω0,0...99,9
100...199Ω
Ω
Measurement of interference voltage
Measurement of interference frequency
Measurement of earthing resistance (method 3- and 4-pole)
measurement range to IEC61557-5: 0,100Ω...19,9kΩ
Measurement of continuity of equipotential bondings and protective
conductors (R ) IEC61557-4:
cont
measurement range to 0,045Ω...19,99kΩ
Measurement of resistance of auxiliary electrodes R and R
H S
Measurement of multiple earthing resistance with using the clamp and auxiliary
electrodes (3p + clamp) measurement range to IEC61557-5: 0,120Ω...1999Ω
Measurement of multiple earthing resistance with using double clamps
Measurement of ground resistivity Measurement method: Wenner, r=2pLR
E
Measurement of AC current (leakage)
1
– receiving clamp (diameter 52mm) – C-3
2
– flexible clamp (Rogowsky coil) with diameter 400 mm – F-1
„m.v.”- measured value
Measurement of dynamic earthing resistance (R ) with impulse wave method (4 p )
D
choice impulse edges: 4/10ms, 10/350ms8/20µs,
v.15.0
±(5% m.v. + 2 digits)
±(5% m.v. + 2 )digits
±(2% m.v. + 4 )digits
0,0...199,9 m
200...1999Ωm
2,00k...19,99kΩm
20,0k...99,9kΩm
100k...999kΩm
Ω
0,1 m
1Ωm
0,01kΩm
0,1kΩm
1kΩm
Ω
L – distance between probes: 1...50m
AccuracyResolutionRange
depending on measurement
accuracy R with 4p method,
E
but not less than ±1 digit
* - in range 0,000…0,045 the accuracy is not specified.Ω
* - in range 0,000…0,045 the accuracy is not specified.Ω