MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
8.1.7 Low-voltage measurement of continuity of circuit and resistance
Measurement of continuity of protective conductors and equipotential bonding with 200 mA
current
Measurement range according to IEC 61557-4: 0.12…400 Ω
Voltage at open terminals: 4 V…9 V
Output current at R<2: min. 200 mA (I
SC
: 200 mA..250 mA)
Compensation of test leads resistance
Measurements for both current polarizations
Measurement of resistance with low current
Voltage at open terminals: 4 V…9 V
Output current < 8 mA
Audio signal for measured resistance < 30 ± 50%
Compensation of test leads resistance
8.1.8 Measurement of insulation resistance
Measurement range, according to IEC 61557-2 for U
N
= 50 V: 50 kΩ…250 MΩ
Display range for
U
N
= 50 V
(3% m.v. + 8 digits),
[(5% m.v. + 8 digits)] *
* – for WS-03 and WS-04 leads
Test range according to IEC 61557-2 for U
N
= 100 V: 100 kΩ…500 MΩ
Display range for
U
N
= 100 V
(3% m.v. + 8 digits)
[(5% m.v. + 8 digits)] *
* – for WS-03 and WS-04 leads
Test range according to IEC 61557-2 for U
N
= 250 V: 250 kΩ…999 MΩ
Display range for
U
N
= 250 V
(3% m.v. + 8 digits)
[(5% m.v. + 8 digits)] *
* – for WS-03 and WS-04 leads