MIC-2505   

Catalog index: WMGBMIC2505

Insulation Resistance Meter

 

      

INSULATION RESISTANCE MEASUREMENT UP TO 2T IN ACCORDANCE WITH IEC 61557 – 2

Insulation resistance measurements:

  • selectable measurement voltage 500, 1000 V or 2500 V,
  • continuous indication of measured insulation resistance or leakage current value,
  • automatic discharge of measured object capacitive voltage after the completion of insulation resistance measurement,
  • acoustic signaling of 5 seconds time intervals to facilitate capturing time characteristics,
  • metered T1, T2 and T3 test times (15,60 and 600 s or 30,60 and 600 s) for measuring two absorption coefficients (DAR, PI, Ab1, Ab2),
  • indication of actual test voltage during measurement,
  • protection against measuring live objects.

Insulation resistance measurement method for two-and three-wire.

Measurement of leakage current during insulation resistance testing.

DC and AC voltage measurement in the range of 0…600 V.

Power supply from battery packs.

The instruments meet the requirements of the EN 61557 standard.

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. + 0,03 Ω)
20,00…199,99 Ω 0,01 Ω ±(5% m.v. +0,3 Ω)
200,0…1999,9 Ω 0,1 Ω ±(5% m.v. + 3 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)

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

Data Sheet                                      

User Manual                                   

Declarations of conformity          

 

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