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Earth Testers

MRU-200

    Description

  • MRU-200 is the only meter in the market which uses all measurement methods.

    Possible measurements:
    • » earth resistance measurment with 2-pole, 3-pole,4-pole method,
    • » impulse earth impedance measurement, two kinds of measuring impulse 4/10μs, 10/350μs,
    • » earth resistance measurement without disconnecting measured earths (using clamp),
    • » two clamps earth resistance measurement without auxiliary test probs,
    • » earth resistivity measurement,
    • » continuity measurement,
    • » leakage current measurement.

    Specification

  • It allows to take the measurements of:

    • » earth resistance using auxiliary electrodes,
    • » earth resistance using auxiliary electrodes and clamp (for measurements of multiple earthing)
    • » earth resistance using double clamps (for measurement of earthing when it is impossible to use auxiliary electrodes),
    • » impulse earth impedance (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 200 mA.

    Additionally:

    • » measurement of resistance of auxiliary electrodes RS and RH,
    • » 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, 50 Hz, 60 Hz and 400 Hz (with automatic selection of proper frequency of measuring signal or with manual selection),
    • » selection of maximum measuring voltage (25 V and 50 V)
    • » 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.

    Electric security:

    • » type of insulation: double, according to EN 61010 - 1 and 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...+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: 36 months

    Measurement of interference voltage

    Range Resolution Accuracy
    0...100 V 1 V ±(2% m.v. + 3 digits)

    Measurement of interference frequency

    Range Resolution Accuracy
    15...450 Hz 1 Hz ±(1% m.v. + 2 digits)

    Measurement of earthing resistance (method 3- and 4-pole) 
    measurement range to IEC61557 - 5: 0,100 Ω...19,9 kΩ

    Range Resolution Accuracy
    0,000...3,999 Ω 0,001 Ω ±(2% m.v. + 4 digits)
    4,00...39,99 Ω 0,01 Ω ±(2% m.v. + 2 digits)
    40,0...399,9 Ω 0,1 Ω
    400...3999 Ω 0,001 kΩ
    4,00k...19,99 kΩ 0,01 kΩ ±(5% m.v. + 2 digits)

    Measurement of continuity of equipotential bondings and protective conductors (Rcont) 
    measurement range to IEC61557 - 4: 0,045 Ω...19,99 kΩ

    Range Resolution Accuracy
    0,000...3,999 Ω 0,001 Ω ±(2% m.v. + 4 digits)
    4,00...39,99 Ω 0,01 Ω ±(2% m.v. + 2 digits)
    40,0...399,9 Ω

    0,1 Ω

    400...3999 Ω 0,001 kΩ
    4,00k...19,99 kΩ 0,01 kΩ ±(5% m.v. + 2 digits)

    Measurement of resistance of auxiliary electrodes RH and RS

    Range Range Accuracy
    0...999 Ω 1 Ω ±(5% (RS+RE+RH) + 8 digits)
    1,00k...9,99 kΩ 0,01 kΩ
    10,0k...19,9 kΩ 0,1 kΩ

     

    Measurement of multiple earthing resistance with using the clamp and auxiliary
    electrodes (3p + clamp)
     measurement range to IEC61557 - 50,120 Ω...1,99 kΩ

    Range Resolution Accuracy
    0,000...3,999 Ω* 0,01 Ω ±(8% m.v. + 4 digits)
    10,0...99,9 Ω 0,01 Ω ±(8% m.v. + 3 digits)
    100...999 Ω 0,1 Ω
    1,00k...1,99 kΩ 1 Ω

    * - in range 0,000…0,045 Ω the accuracy is not specified.

    Measurement of multiple earthing resistance with using double clamps

    Range Resolution Accuracy
    0,00...19,99 Ω 0,1 Ω ±(10% m.v. + 3 digits)
    20,0...149,9 Ω 0,1 Ω ±(20% m.v. + 3 digits)

    Measurement of ground resistivity Measurement method: Wennera, ρ=2πLRE

    Range Resolution Accuracy
    0,0...199,9 Ωm 0,1 Ωm depending on measurement
    accuracy RE with 4p method,
    but not less than ±1 digit
    200...1999 Ωm 1 Ωm
    2,00k...19,99 kΩm 0,01 kΩm
    20,0k...99,9 kΩm 0,1 kΩm
    100k...999 kΩm 1 kΩm

    L – distance between probes: 1...50 m
     

    Measurement of AC current (leakage)

    Range Resolution Accuracy
    0,1...99,9 mA 1 0,1 mA ±(8% m.v. + 5 digits)
    100...999 mA 1 1 mA ±(8% m.v. + 3 digits)
    1,00...4,99 A 1,2 0,01 A ±(5% m.v. + 5 digits)1
    unspecified 2
    5,00...9,99 A 1,2 0,01 A ±(5% m.v. + 5 digits)
    10,0...99,9 A 1,2 0,1 A
    100...300 A 1,2 1 A

    1 – receiving clamp (diameter 52 mm) – C-3
    2 – flexible clamp (Rogowsky coil) with diameter 400 mm – F-1

    Measurement of dynamic earthing resistance (RD) with impulse wave method (4p )

    Range Resolution Accuracy
    0,0...99,9 Ω 0,1 Ω ±(2,5% m.v. + 3 digits)
    100...199 Ω 1 Ω

    choice impulse edges: 4/10 ms, 10/350 ms

    „m.v.”- measured value



MRU-120

    Description

  • Possible measurements:

    • » earth resistance measurment with 3-pole,4-pole method,
    • » earth resistance measurement without disconnecting measured earths (using clamp),
    • » continuity of equipotential bondings and protecting conductors
    • » two clamps earth resistance measurement without auxiliary test probs,
    • » earth resistivity measurement,

    Specification

  • It allows to take the measurements of:

    • » earth resistance using auxiliary electrodes,
    • » earth resistance using auxiliary electrodes and clamp (for measurements of multiple earth)
    • » earth resistance using double clamps (for measurement of earthing when it is impossible to use auxiliary electrodes),
    • » ground resistivity (Wenner method),
    • » 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 200 mA.

    Additionally:

    • » measurement of resistance of auxiliary electrodes RS and RH,
    • » measurement of interference voltage,
    • » measurement of interference frequency,
    • » measurement in the presence of interference voltage in the power network with frequency 50 Hz, 60 Hz
    • » selection of maximum measuring voltage (25 V and 50 V)
    • » introducing the distance between the electrodes for the resistivity in metres (m),
    • » memory of 990 measurements (10 banks of 99 cells each),
    • » calibration of clamp used,
    • » real time clock (RTC),
    • » data transmission to the computer (USB, wireless),
    • » indication of battery state.

    Electric security:

    • » type of insulation: double, according to EN 61010 - 1 and 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...+50°C
    • » storage temperature: -20...+70°C
    • » humidity: 20...80%

    Other technical data:

    • » LCD display: graphic, backlighted
    • » interface: USB, wireless
    • » number of measurements carried out of set of batteries: > 500
    • » warranty: 36 months

    Measurement of interference voltage

    Range Resolution Accuracy
    0...100 V 1 V ±(2% m.v + 3 digits)
    • » singnalling overvoltage 24 V or 40 V rms
    • » measurement for DC and AC 45…65 Hz,

    Measurement of earth resistance (method 3- and 4-pole) 
    measurement range to IEC61557 - 5: 0,30 Ω...19,9 kΩ

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(2% m.v. + 2 digits)
    20,0...199,9 Ω 0,1 Ω
    200...1999 Ω 1 Ω
    2,0k...9,99 kΩ 0,01 kΩ ±(5% m.v. + 4 digits)
    10,0k...19,9 kΩ 0,1 kΩ
    • » measurement current: under short circuit >200 mA,
    • » voltage on open terminals: selectable <25 V AC or <50 V AC,
    • » frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for 60 Hz),

    Measurement of continuity of equipotential bondings and protective conductors (Rcont)
    measurement range to IEC61557 - 5: 0,24 Ω...19,9 kΩ

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(2% m.v. + 2 digits)
    20,0...199,9 Ω 0,1 Ω
    200...1999 Ω 1 Ω
    2,0k...9,99 kΩ 0,01 kΩ ±(5% m.v. + 2 digits)
    10,0k...19,9 kΩ 0,1 kΩ

     

    • » voltage on open terminals: <24 Vrms but >4 Vrms,
    • » measurement current: under short circuit >200 mA,
    • » frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for networks 60 Hz), possible choice of measurement frequency in menu,
    • » auto-zero function measurement leads

    Measurement of resistance of auxiliary electrodes RH and RS

    Range Resolution Accuracy
    0...999 Ω 1 Ω ±(5% (RS+RE+RH) + 8 digits)
    1,00k...9,99 kΩ 0,01 kΩ
    10,0k...19,9 kΩ 0,1 kΩ

    Measurement of multiple earth resistance with using the clamp and auxiliary electrodes (3p + clamp) 
    measurement range to IEC61557 - 5: 0,44 Ω...1999 Ω

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(8% m.v. + 3 cyfry)
    20,0...199,9 Ω 0,1 Ω
    200...1999 Ω 1 Ω
    • » voltage on open terminals: selectable <25 V AC or <50 V AC,
    • » measurement current: under short circuit > 200 mA,
    • » frequency of measurement current: 125 (for networks 50 Hz) or 150 Hz (for 60 Hz),

    Measurement of multiple earth resistance with using double clamps

    Range Resolution Accuracy
    0,00..19,99 Ω 0,01 Ω ±(10% m.v. + 3 digits)
    20,0...149,9 Ω 0,1 Ω ±(20% m.v. + 3 digits)
    • frequency of measurement current 125 (for networks 50 Hz) or 150 Hz (for networks 60 Hz)

    Measurement of ground resistivity 
    Measurement method: Wennera, ρ=2πLRE

    Range Resolution Accuracy
    0,0...199,9 Ωm 0,1 Ωm depending on measurement
    accuracy RE with 4p method,
    but not less than ±1 digit
    200...1999 Ωm 1 Ωm
    2,00k...19,99 kΩm 0,01 kΩm
    20,0k...99,9 kΩm 0,1 kΩm
    100k...999 kΩm 1 kΩm

    L – distance between probes: 1...50 m



MRU-105/106

    Description

    • 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. 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

    Specification

  • 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”



MRU-21

    Description

  • 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.

    Specification

  • 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...19,9 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: 3 years
    • » dimentions: 288 x 223x75 mm
    • » weigth: 1,4 kg


MRU-20

    Description

  • 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.

    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...19,9 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 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 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


MPI-530

    Description

    • MPI-530 meter is a multi-functional instrument for electric shock protection measurements including the option of various methods for measuring earthing and earthing resistance. Additionally the meter enables its user to analyse power supply parameters, records and displays them on its screen. The instrument automatically measures the insulation resistance in a socket and in 3 -, 4 - and 5-wire cables when used with AutoISO-1000C adapter. Measurement results may be continuously verified, depending on user’s demand or according to binding regulations. Memory of the instrument may store tens of thousands of measurements allowing users to store them in a structure of a protocol and describe individual measurement points.

    Specification

  • Measurement of short circuit loop impedance ZL-PE, ZL-N, ZL-L
    Test current: 23/40 A; measuring range acc. to IEC 61557: 0,13...1999,9 Ω
    (for 1.2 m test lead):

    Display range Resolution Accuracy
    0,000...19,999 Ω 0,001 Ω ±(5% m.v. + 3 digits)
    20,00...199,99 Ω 0,01 Ω
    200,0...1999,9 Ω 0,1 Ω

    Rated voltage: 95...270 V (for ZL-PE and ZL-N) and 95...440 V (for ZL-L)
    Frequency: 45...65 Hz;

    Measurement of short circuit loop impedance ZL-PE in RCD mode
    Test current: 15 mA, measuring range acc. to IEC 61557: 0,50...1999 Ω

    Display range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(6% w.m. + 10 digits)
    20,0...199,9 Ω 0,1 Ω ±(6% w.m. + 5 digits)
    200...1999 Ω 1 Ω

    Rated voltage: 95...270 V
    Frequency: 45...65 Hz

    Measurement of earth resistance RE with the 3p and 4p method
    Measuring range acc. to IEC 61557 - 5:

    • » 0,50 Ω…1,99 kΩ for test voltage 50 V
    • » 0,56 Ω…1,99 kΩ for test voltage 25 V
    Display range Resolution Accuracy
    0,00...9,99 Ω 0,01 Ω ±(2% m.v. + 4 digits)
    10,0...99,9 Ω 0,1 Ω ±(2% m.v.. + 3 digits)
    100...999 Ω 1 Ω
    1,00...1,99 kΩ 0,01 kΩ
    • » test voltage: 25 V or 50 V rms
    • » test current: 20 mA, sinusoidal rms 125 Hz (for fn=50 Hz) and 150 Hz (for fn=60 Hz)
    • » measurement blocked at interference voltage UN > 24 V
    • » maximum measured interference voltage Unmax= 100 V
    • » maximum resistance of auxiliary earth electrodes 50 kΩ
       

    Selective earth resistance measurement with clamp (3p + clamp)
    Measuring range acc. to IEC 61557 - 5: 1 Ω…1,99 kΩ

    Display range Resolution Accuracy
    0,00...9,99 Ω 0,01 Ω ±(8% m.v. + 4 digits)
    10,0...99,9 Ω 0,1 Ω
    100...999 Ω 1 Ω
    1,00...1,99 kΩ 0,01 kΩ
    • » measurement with additional current clamp
    • » interference current measuring range: up to 9,99 A

    Selective earth measurement with two clamps

    Display range Resolution Accuracy
    0,00...9,99 Ω 0,01 Ω ±(10% m.v. + 4 digits)
    10,0...99,9 Ω 0,1 Ω
    100...999 Ω ±(20% m.v. + 4 digits)
    • » measurement with transmitting and receiving clamps
    • » interference current measuring range: up to 9,99 A

    Soil resistivity mesurement (ρ)

    Display range Resolution Accuracy
    0,0...99,9 Ωm 0,1 Ωm Depending on accuracy
    of RE measurement
    100...999 Ωm 1 Ωm
    1,00...9,99 Ωm 0,01 kΩm
    10,0...99,9 kΩm 0,1 kΩm
    • » measurement with Wenner’s method
    • » distance settable in metres or feet
    • » distance range: 1...30 m (1...90 feet)

    Phase sequence indication

    • » Phase sequence indication: conforming, non-conforming
    • » Mains voltage range UL-L: 100...440 V (45...65 Hz)
    • » Display of phase-to-phase voltage values

     

    Measurements of RCD parameters (voltage range 95...270 V):

     

     

    RCD tripping test and measurement of tripping time tA (for tA measurement function)

     

    RCD type Current Range Resolution Accuracy
    General and
    short-time
    delay
    0,5*IΔn 0...300 ms

    1 ms

    ± (2% m.v. + 2 digits)

    (for RCD with IΔn=10 mA
    and 0,5xIΔn uncertainty:
    ±(2% m.v. + 3 digits)

    1*IΔn
    2*IΔn 0...150 ms
    5*IΔn 0...40 ms
    Selective 0,5*IΔn 0...500 ms
    1*IΔn
    2*IΔn 0...200 ms
    5*IΔn 0...150 ms

    accuracy of residual current application: for 0,5*IΔn:-8...0% for 1*IΔn, 2*IΔn, 5*IΔn: 0...8%

    Measurement of RCD tripping current IA for sinusoidal residual current (AC type)

    Rated
    current
    Meas. range Resolution Test current Accuracy
    10 mA 3,3...10,0 mA 0,1 mA 0,3 x IΔ..1,0 x IΔ ± 5%IΔn
    30 mA 9,0...30,0 mA
    100 mA 33...100 mA 1 mA
    300 mA 90...300 mA
    500 mA 150...500 mA
    1000 mA 330...1000 mA

    The measurement can be started from positive or negative half-period of forced leakage current

    Measurement of RCD tripping current IA for unidirectional residual current and unidirectional
    with the 6 mA DC bias (type A)

    Rated
    current
    Meas. range Resolution Test current Accuracy
    10 mA 3,5...20,0 mA 0,1 mA 0,35 x IΔn..2,0 x IΔn ±10%IΔn
    30 mA 10,5...42,0 mA 0,35 x IΔn..1,4 x IΔn
    100 mA 35,0...140 mA 1 mA
    300 mA 105...420 mA
    500 mA 175...700 mA

    Measurement for positive or negative half-periods of forced leakage current

    Measurement of RCD tripping current IA for direct residual current (type B)

    Rated
    current
    Meas. range Resolution Test current Accuracy
    10 mA 2,0...20,0 mA 0,1 mA 0,4 x IΔn..2,0 x IΔn ±10%IΔn
    30 mA 6...60 mA 1 mA
    100 mA 20...200 mA
    300 mA 60...600 mA
    500 mA 100...1000 mA

    Measurement for positive or negative half-periods of forced leakage current
    IΔn - rated residual current

    Insulation resistance measurements
    Measuring range acc. to IEC 61557 - 2:

    • » for UN = 50 V: 50 kΩ...250 MΩ
    • » for UN = 100 V: 100 kΩ...500 MΩ
    • » for UN = 250 V: 250 kΩ...999 MΩ
    • » for UN = 500 V: 500 kΩ...2 GΩ
    • » for UN = 1000 V: 1,000 MΩ...9,99 GΩ
    Display range*) Resolution Accuracy
    0...1999 kΩ 1 kΩ ±(3% m.v. + 8 digits)
    2,00...19,99 MΩ 0,01 MΩ
    20,0...199,9 MΩ 0,1 MΩ
    200...999 MΩ 1 MΩ
    1,00...9,99 MΩ 0,01 GΩ ±(4% m.v. + 6 digits)

    *) not greater than measuring range for given voltage

    Low-voltage measurement of resistance and circuit continuity
    Measurement of protective conductor continuity with the ±200 mA current

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(2% m.v. + 3 digits)
    20,0...199,9 Ω 0,1 Ω
    200...400 Ω 1 Ω
    • » voltage on open terminals: 4…9 V
    • » output current at R < 2 Ω: min. 200 mA
    • » autocalibration of test leads
    • » measurements for both current polarities

    Illuminance measurement

    Range Resolution Accuracy
    0,1...99,9 lx 0,1 lx ±(5% m.v. + 2 digits)
    100...999 lx 1 lx
    1,00...9,99 klx 0,01 lx
    10,0...19,9 klx 0,1 lx

    - - measurement in luxes (lx) or feet-candles (fc)

     

    ANALYSIS AND RECORDING OF SINGLE-PHASE SYSTEM

    • » Voltage measurement ULN: 0...500 V
    • » Frequency range of measured voltages: 45,0...65,0 Hz
    • » Frequency measurement range for 50...500 V voltages: 45,0...65,0 Hz (basic uncertainty max. ± 0,1% m.v. + 1 digit)
    • » cosφ measurement: 0,00...1,00 (resolution 0,01)
    • » Measurement and recording in single-phase system

     

    Current measurement (True RMS)

    Clamps Range Resolution Accuracy*
    C-3, C-6 0,0...99,9 mA 0,1 mA ±(5% m.v. + 3 digits)
    100...999 mA 1 mA
    C-3,C-6
    F-1, F-2, F-3
    1,00...9,99 A 0,01 A ±(5% m.v. + 5 digits)
    (C-3, C-6)
    ±(0,1% In + 2 digits)
    (F-1, F-2, F-3)
    10,0...99,9 A 0,1 A
    100...999 A 1 A
    F-1, F-2, F-3 1,00...3,00 kA 0,01 kA

    * the accuracy of current clamps must also be taken into account

    Measurement of active power P, reactive power Q, apparent power S and cosφ

    Range
    [W], [VA], [var]
    Resolution
    [W], [VA], [var]
    Accuracy*
    0...999 1 ±(7% m.v. + 3 digits)
    1,00...9,99 k 0,01 k
    10,0...99,9 k 0,1 k ±(7% m.v. + 5 digits)
    100...999 k 1 k
    1,00...1,50 M 0,01 M
    • » voltage range: 0…500 V
    • » current range: 0...1000 A (3000 A)
    • » mains rated frequency fn: 50 Hz, 60 Hz
       

    Voltage harmonics measurement

    Range Resolution Nr harm. Accuracy
    0,0...500 V 0,1 (1*) V 1,2,...15 ±(5% m.v. + 3 digits)
    16,...40 ±(5% m.v. + 10 digits)
    • in addition display of h02...h40 values as percent of h01 (up to 999%)

    *) from 300 V to 500 V

    THD (in relation to the 1 st harmonics)

        Resolution Accuracy
    THD-F voltage
    (h = 2…40)
    0,0…999,9%
    for URMS ≥ 1% Unom
     
    0,1% ±5%
    THD-F current
    (h = 2...40)
    0,0…999,9%
    for IRMS ≥ 1% Inom
    0,1% ±5%

     

    NOTE: “m.v.” means “ measured value”

    The instruments conforms to:

    • » EN 61010 - 1 (general safety requirements)
    • » EN 61010 - 031 (detailed safety requirements)
    • » EN 61326 (electromagnetic compatibility)
    • » EN 61557 - 10 (requirements for combined instruments)
    • » IEC 60364 - 6-61 / HD 60364 - 6 (measurements - verification)
    • » IEC 60364 - 4-41 / HD 60364 - 4-41 (measurements – protection against electric shock)
    • » EN 04700 (measurements – acceptance tests)
    • » EN 12464 (lighting of work places)
    • » DIN VDE 0100
    • » DIN VDE 0413
    • » BS 7671


MPI-525

    Description

    • Possible measurements

      Short-circuit loop measurement:

      • » impedance measurement with 23 A current (44 A phase-to-phase) - short-circuit resistor R=10,
      • » measurement range: 95...440 V, frequency 45...65 Hz,

      Short-circuit loop measurement with resolution 0,01, in distribution network without tiggering RCD (In30 mA):

      • » automatic calculation of short-circuit, detection of phase voltage and phase-to-phase voltage,
      • » additional UNI-Schuko plug for automatic measurement, AGT adapter for 3 phase network measurement.

      Testing of general and selective RCD with the rated differential current of 10,30,100,300,500 and 1000 mA. (Type AC, A and B).

      Measurement of insulation resistance:

      • » with test voltage 250 V, 500 V, 1000 V, 2500 V,
      • » measurement range up to 10G,
      • » automatic discharging after measurement,
      • » automatic measurement of all resistences in 3,4,5-wire cables using optional adapter AUTO-ISO,
      • » acoustic signals in 5 sec intervals for insulation resistance characteristic,
      • » elapsing T1, T2, T3 times (0...600 s) form measurement of absorption coefficients (DAR, PI or Ab1, Ab2)
      • » safety measurement - protection against overvoltage.

      Measurement of earthing resistance.

      Bi-directional testing of PE wire continuity using 200 mA current.

      • » Autocalibration of test leads.

      Phase sequence testing.

      Memory is divided into 10 memory banks each of them containing 99 memory cells.

      Battery charge indicator.

      AUTO-OFF function.

      USB interface.

      MPI-525 is equipment to perform complete test and verify on electrical installations according to the most common safety standards (IEC 61557, VDE 0100, BS7671).

    Specification

  • Possible measurements

    • » Short-circuit loop measurement:
      -impedance measurement with 23 A current (44 A phase-to-phase) - short-circuit resistor R=10 Ω,
      - measurement range: 95...440 V, frequency 45...65 Hz,
    • » Short-circuit loop measurement with resolution 0,01 Ω, in distribution network without tiggering RCD (IΔn≥30 mA):
      - automatic calculation of short-circuit, detection of phase voltage and phase-to-phase voltage,
      - additional UNI-Schuko plug for automatic measurement, AGT adapter for 3 phase network measurement.
    • » Testing of general and selective RCD with the rated differential current of 10,30,100,300,500 and 1000 mA. (Type AC, A and B).
    • » Measurement of insulation resistance:
      - with test voltage 250 V, 500 V, 1000 V, 2500 V,
      - measurement range up to 10 GΩ,
      - automatic discharging after measurement,
      - automatic measurement of all resistences in 3,4,5-wire cables using optional adapter AUTO-ISO,
      - acoustic signals in 5 sec intervals for insulation resistance characteristic,
      - elapsing T1, T2, T3 times (0...600 s) form measurement of absorption coefficients (DAR, PI or Ab1, Ab2)
      - safety measurement - protection against overvoltage.
    • » Measurement of earthing resistance.
    • » Bi-directional testing of PE wire continuity using 200 mA current.
      - Autocalibration of test leads.
    • » Phase sequence testing.
    • » Memory is divided into 10 memory banks each of them containing 99 memory cells.
    • » Battery charge indicator.
    • » AUTO-OFF function.
    • » USB interface.

    Rated operational conditions:
    - operation temperature 0...+50°C

    Electric security:
    - type of insulation: double, according to PN-EN 61010 - 1and IEC 61557, EMC
    - measurement category: IV 300 V acc. to PN-EN 61010 - 1
    - protection class acc. to PN-EN 60529: IP54

    Short-circuit loop impedance measurement ZL-PE, ZL-N, ZL-L
    Measurement using 23/40 A current measurement range in accordance with
    IEC 61557: 0,13...1999,9 Ω
    (for 1,2 m lead):

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(5% m.v + 3 dgt)
    20,0...199,9 Ω 0,1 Ω
    200...1999 Ω 1 Ω

    rated voltage: 95...270 V (forZL-PE i ZL-N) and 95...440 V (for ZL-L)
    frequency: 45...65 Hz

    Short-circuit loop impedance measurement ZL-PE RCD 
    Measurement using 15 mA current measurement range in accordance with
    IEC 61557: 0,50...1999,9 Ω

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(6% m.v. + 10 dgt)
    20,0...199,9 Ω 0,1 Ω ±(6% m.v + 5 dgt)
    200...1999 Ω 1 Ω

    rated voltage: 95...270 V
    frequency: 45...65 Hz

    Measurement of earthing RE
    Rated voltage in accordance with IEC 61557 - 5: 0,5...1999 Ω

    Range Resolution Accuracy
    0,00...9,99 Ω 0,01 Ω ±(2% m.v. + 4 dgt)
    10,0...99,9 Ω 0,1 Ω ±(2% m.v. + 3 dgt)
    100...999 Ω 1 Ω
    1,00...1,99 kΩ 0,01 kΩ

     

    Insulation resistance measurement
    Measurement range in accordance with IEC 61557 - 2:
    - for UN = 50 V: 50 kΩ...250 MΩ
    - for UN = 100 V: 100 kΩ...500 MΩ
    - for UN = 250 V: 250 kΩ...1 GΩ
    - for UN = 500 V: 500 kΩ...2 GΩ
    - for UN = 1000 V: 1 MΩ...3 GΩ
    - for UN = 2500 V: 2,5 MΩ...9,99 GΩ

     

    Range*) Resolution Accuracy
    0...1999 kΩ 1 kΩ ±(3% m.v. + 8 dgt)
    2,00...19,99 MΩ 0,01 MΩ
    20,0...199,9 MΩ 0,1 MΩ
    200...999 MΩ 1 MΩ
    1,00...3,00 GΩ 0,01 GΩ ±(4% m.v. + 6 dgt)
    1,00...9,99 GΩ 0,1 GΩ

     

     

    *) limited to measurement range.
    - with UNI-Schuko additional error ±2%.
     

    Phase sequence
    - phase sequence indicator: forward, reverse
    - mains voltage range UL-L: 100...440 V (45…65 Hz) UL-L: 100...440 V (45...65 Hz)
    - display of phase-to-phase voltages

    Low voltage test of the circuit and insulation continuity
    Test of PE wire continuity using a ±200 mA current

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(2% m.v. + 3 dgt)
    20,0...199,9 Ω 0,1 Ω
    200...400 Ω 1

    - Voltage on open terminals: 4…9 V
    - Test current at R<2 Ω: min. 200 mA at rated battery voltage
    - Autocalibration of test leads
    - Measurements for both polarizations of the current

    RCD trigger and response time test tA (for tA mode)
    Measurement ranges in accordance with IEC 61557: 0 ms ... up to the upper bound of the displayed value

    Breaker
    Type
    Test
    Current
    Multiplier
    Measurement
    Range
    Resolution Accuracy
    Standard 0,5*IΔn 0...300 ms

    1 ms

    ± (2% m.v + 2 dgt)

     

    1*IΔn
    2*IΔn 0...150 ms
    5*IΔn 0...40 ms
    Selective 0,5*IΔn 0...500 ms
    1*IΔn
    2*IΔn 0...200 ms
    5*IΔn 0...150 ms

    Precision of the differential current: for 0,5*IΔn:-8...0% dla 1*IΔn, 2*IΔn, 5*IΔn: 0...8%

    Measurement of the RCD triggering current (IA) for sine waveform testing current

    Selected
    Current
    Range Resolution Test
    Current
    Accuracy
    10 mA 3,3...10,0 mA 0,1 mA 0,3xIΔ..1,0xIΔ ± 5%IΔn
    30 mA 9,0...30,0 mA
    100 mA 33...100 mA 1 mA
    300 mA 90...300 mA
    500 mA 150...500 mA
    1000 mA 330...1000 mA 1 mA

    It is possible to start the measurement from the positive or negative half of the forced leaking current

    Measurement of the RDC triggering current (IA ) for a unidirectional half period sine
    waveform test current with a 6 mA direct current offset

    Selected
    Current
    Range Resolution Test
    Current
    Accuracy
    10 mA 4...20,0 mA 0,1 mA 0,4xIΔn..2,0xIΔn ±10%IΔn
    30 mA 12,0...42,0 mA 0,4xIΔn..1,4xIΔn
    100 mA 40,0...140 mA 1 mA
    300 mA 120...420 mA
    500 mA 200...700 mA

    a measurement is possible for a positive or negative forced leakage current

    Measurement of the RCD triggering current (IA ) for direct testing current

    Selected
    Current
    Range Resolution Test
    Current
    Accuracy
    10 mA 4,0...20,0 mA 0,1 mA 0,4xIΔn..2,0xIΔn ±10%IΔn
    30 mA 12,0...60,0 mA 1 mA
    100 mA 40...200 mA
    300 mA 120...600 mA
    500 mA 200...1000 mA

    a measurement is possible for a positive or negative forced leakage current

    „m.v.” measured value.



MPI-520

    Description

    • The MPI-520 multifunction meter is dedicated to perform diagnosis of electrical installation according to IEC 61557 standards. Digital meter MPI-520 is designed to measure impedance of a short cicuit loop also without triggering RCD, parameters of RCD, insulation resistance, earthing resistance, continuity and also for phase sequence testing. Furthermore to measure and logging of AC voltage and current, frequency and power.
      Wide range of standard accessories enable to perform all necessary measurements and safety test. Highly professional portable multifunction meter with memory of measured parameters.
    • MPI-520 is equipment to perform complete test and verify on electrical installations according to the most common safety standards (IEC 61557, VDE 0100, BS7671).

    Specification

  • Possible measurements:

    Short-circuit loop measurement:

    • » impedance measurement with 23 A current (44 A phase-to-phase) - short-circuit resistor R=10 Ω,
    • » measurement range: 95...440 V, frequency 45...65 Hz,

    Short-circuit loop measurement with resolution 0,01 Ω, in distribution network without tiggering RCD (IΔn≥30 mA):

    • » automatic calculation of short-circuit, detection of phase voltage and phase-to-phase voltage,
    • » additional UNI-Schuko plug for automatic measurement, AGT adapter for 3 phase network measurement.

    Testing of general and selective RCD with the rated differential current of 10,30,100,300,500 and 1000 mA. (Type AC, A and B).

    Measurement of insulation resistance:

    • » with test voltage 250 V, 500 V, 1000 V,
    • » measurement range up to 3 GΩ,
    • » UNI-Schuko plug for insulation measurement,
    • » automatic discharging after measurement,
    • » automatic measurement of all resistences in 3,4,5-wire cables using optional adapter AUTO-ISO,
    • » acoustic signals in 5 sec intervals for insulation resistance characteristic,
    • » safety measurement - protection against overvoltage.

    Measurement of earthing resistance.

    Bi-directional testing of PE wire continuity using 200 mA current.

    • » Autocalibration of test leads.

    Phase sequence testing.

    Memory is divided into 10 memory banks each of them containing 99 memory cells.

    Battery charge indicator.

    AUTO-OFF function.

    USB interface.

    Short-circuit loop impedance measurement ZL-PE, ZL-N, ZL-L
    Measurement using 23/40 A current measurement range in accordance with IEC 61557: 0,13...1999,9 Ω
    (for 1,2 m lead ):

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(5% m.v. + 3 dgt)
    20,0...199,9 Ω 0,1 Ω
    200...1999 Ω 1 Ω

    rated voltage: 95...270 V (for ZL-PE i ZL-N) and 95...440 V (for ZL-L)
    frequency: 45...65 Hz

    Short-circuit loop impedance measurement ZL-PERCD 
    Measurement using 15 mA current measurement range in accordance with
    IEC 61557: 0,50...1999,9 Ω

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(6% m.v. + 10 dgt)
    20,0...199,9 Ω 0,1 Ω ±(6% m.v. + 5 dgt)
    200...1999 Ω 1 Ω

    rated voltage: 95...270 V
    frequency: 45...65 Hz

    Measurement of earthing RE 
    Rated voltage in accordance with IEC 61557 - 5:

    • » 0,5 Ω…1,99 kΩ for 50 V
    • » 0,56 Ω…1,99 kΩ for 25 V
    Range Resolution Accuracy
    0,00...9,99 Ω 0,01 Ω ±(2% m.v. + 4 dgt)
    10,0...99,9 Ω 0,1 Ω ±(2% m.v. + 3 dgt)
    100...999 Ω 1 Ω
    1,00...1,99 kΩ 0,01 kΩ

     

    Insulation resistance measurement
    Measurement range in accordance with IEC 61557 - 2:

     

    • » for UN = 50 V: 50 kΩ...250 MΩ
    • » for UN = 100 V: 100 kΩ...500 MΩ
    • » for UN = 250 V: 250 kΩ...1 GΩ
    • » for UN = 500 V: 500 kΩ...2 GΩ
    • » for UN = 1000 V: 1 MΩ...3 GΩ
    Display range*) Resolution Accuracy**)
    0...1999 kΩ 1 kΩ ±(3% m.v. + 8 dgt)
    2,00...19,99 MΩ 0,01 MΩ
    20,0...199,9 MΩ 0,1 MΩ
    200...999 MΩ 1 MΩ
    1,00...3,00 GΩ 0,01 GΩ ±(4% m.v. + 6 dgt)

    *) limited to measurement range.
    **) with UNI-Schuko additional error ±2%.

    Phase sequence

    • » phase sequence indicator: forward, reverse
    • » mains voltage range UL-L: 100...440 V (45…65 Hz) UL-L: 100...440 V (45...65 Hz)
    • » display of pase-to-phase voltages

    Measurement of the active P, passive Q and apparent S power and cosφ

    • » Range of voltages ULN: 0...440 V
    • » Nominal frequency of the network: 45...65 Hz
    • » frequency measurement for voltage 50...440 V in range 45,0...65,0 Hz (accuracy max. ± 0,1%m.v. + 1 digit)

    - measurement cosφ: 0,00...1,00 (resolution 0,01)

    Low voltage test of the circuit and insulation continuity
    Test of PE wire continuity using a ±200 mA current

    Range Resolution Accuracy
    0,00...19,99 Ω 0,01 Ω ±(2% m.v. + 3 dgt)
    20,0...199,9 Ω 0,1 Ω
    200...400 Ω 1

    Voltage on open terminals: 4…9 V
    Test current at R<2 Ω: min. 200 mA at rated battery voltage
    Autocalibration of test leads
    Measurements for both polarizations of the current

    RCD trigger and response time test tA (for tA mode)Measurement ranges
    in accordance with IEC 61557: 0 ms ... up to the upper bound of the displayed value

    Breaker Type Test Current
    Multiplier
    Measurement
    Range
    Resolution Accuracy
    Standard 0,5*IΔn 0...300 ms

    1 ms

    ± (2% m.v. + 2 dgt)

    1*IΔn
    2*IΔn 0...150 ms
    5*IΔn 0...40 ms
    Selective 0,5*IΔn 0...500 ms
    1*IΔn
    2*IΔn 0...200 ms
    5*IΔn 0...150 ms

    Precision of the differential current: for 0,5*IΔn:-8...0% dla 1*IΔn, 2*IΔn, 5*IΔn: 0...8%

    Measurement of the RCD triggering current (IA) for sine waveform testing current

    Selected
    Current
    Range Resolution Test
    Current
    Accuracy
    10 mA 3,3...10,0 mA 0,1 mA 0,3xIΔ..1,0xIΔ ± 5%IΔn
    30 mA 9,0...30,0 mA
    100 mA 33...100 mA 1 mA
    300 mA 90...300 mA
    500 mA 150...500 mA
    1000 mA 330...1000 mA 1 mA

    It is possible to start the measurement from the positive or negative half of the forced leaking current

    Measurement of the RDC triggering current (IA ) for a unidirectional half period sine
    waveform test current with a 6 mA direct current offset

    Selected
    Current
    Range Resolution Test
    Current
    Accuracy
    10 mA 4...20,0 mA 0,1 mA 0,4xIΔn..2,0xIΔn ±10%IΔn
    30 mA 12,0...42,0 mA 0,4xIΔn..1,4xIΔn
    100 mA 40,0...140 mA 1 mA
    300 mA 120...420 mA
    500 mA 200...700 mA
    • » a measurement is possible for a positive or negative forced leakage current

    Measurement of the RCD triggering current (IA ) for direct testing current

    Selected
    Current
    Range Resolution Test
    Current
    Accuracy
    10 mA 4,0...20,0 mA 0,1 mA 0,4xIΔn..2,0xIΔn ±10%IΔn
    30 mA 12,0...60,0 mA 1 mA
    100 mA 40...200 mA
    300 mA 120...600 mA
    500 mA 200...1000 mA
    • » a measurement is possible for a positive or negative forced leakage current

    „m.v.” measured value.




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