MI 3110 EurotestIM
Measurements
– a.c. LV IT installations
37
Testing of insulation monitoring devices (IMD):
R1............ Threshold indicative insulation resistance for phase 1,
I1 ............. First fault leakage current at single fault between L1/PE,
R2............ Threshold indicative insulation resistance for phase 2
I2 ............. First fault leakage current at single fault between L2/PE,
Displayed results after auto-sequence terminated and recalled results:
Voltage:
U12 ........... Voltage between phases L1 and L2,
Line impedance:
Z .............. Line impedance,
Isc............ Prospective short-circuit current,
First fault leakage current (ISFL):
Isc1 .......... First fault leakage current at single fault between L1/PE
(left value on screen),
Isc2 .......... First fault leakage current at single fault between L2/PE
(right value on screen),
Testing of insulation monitoring devices (IMD):
R1............ Threshold indicative insulation resistance for phase 1
(left value on screen),
R2............ Threshold indicative insulation resistance for phase 2
(right value on screen)
Note
:
❑
Before starting the auto-sequence measurement all settings of parameters
should be checked.
