Sonel MPI-506 - Measurement of Insulation Resistance; Low-Voltage Continuity and Resistance Measurement

MPI-506 – USER MANUAL
57
10.1.6 Measurement of insulation resistance
Test range according to IEC 61557-2 for U
N
= 100 V: 100 kΩ…99.9 MΩ
Display range for
U
N
= 100 V
Resolution
Basic uncertainty
0…1999 kΩ
1 kΩ
(5% m.v. + 8 digits)
2.00…19.99 MΩ
0.01 MΩ
20.0…99.9 MΩ
0.1 MΩ
Test range according to IEC 61557-2 for U
N
= 250 V: 250 kΩ…199.9 MΩ
Display range for
U
N
= 250 V
Resolution
Basic uncertainty
0…1999 kΩ
1 kΩ
(5% m.v. + 8 digits)
2.00…19.99 MΩ
0.01 MΩ
20.0…199.9 MΩ
0.1 MΩ
Test range according to IEC 61557-2 for U
N
= 500 V: 500 kΩ…599.9 MΩ
Display range for
U
N
= 500 V
Resolution
Basic uncertainty
0…1999 kΩ
1 kΩ
(5% m.v. + 8 digits)
2.00…19.99 MΩ
0.01 MΩ
20.0…599.9 MΩ
0.1 MΩ
 Test voltage: 100 V, 250 V, 500 V
 Accuracy of generated voltage (Robc [Ω]  1000*U
N
[V]): -0+10% from the set value
 Detection of a dangerous voltage before commencing a measurement
 Discharging the object tested
 Measurement of voltage on terminals +R
ISO
, -R
ISO
within the range of 0…440 V
 Test current <2 mA
10.1.7 Low-voltage continuity and resistance measurement
Continuity measurements of protective conductors and equipotential bonding with the
200 mA current
Measurement range according to IEC 61557-4: 0.12…400 Ω
Range
Resolution
Basic uncertainty
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…20 V
 Output current at R<2 Ω: min 200 mA (I
SC
: 200…250 mA)
 Test leads resistance compensation
 Measurements for both current polarities