Sonel MPI-540 - Measurement of Fault Loop Impedance in IT Networks

MPI-540 – USER MANUAL
45
3.4.6 Measurement of fault loop impedance in IT networks
Before performing the measurements in the Measurement settings menu select the appropriate
network type (section 2.2.1).
NOTE!
 After selecting an IT type network, the function of the contact electrode is inactive.
 When attempting to perform the Z
L-PE
and Z
L-PE[RCD] measurement
a message will ap-
pear informing that the measurement is impossible.
The manner of connecting the device to the installation is shown in Fig. 3.7.
The manner of performing the fault loop measurements is described in section 3.4.2.
Operating voltage range: 95 V … 440 V.
Fig. 3.7 Measurement in the IT system