MI 3155
Eurotest
XD
Test and measurements
127
7.12
Z loop 4W – Fault loop impedance and prospective
fault current
Figure 7.43: Z loop 4W menu
Measurement parameters / limits
Fuse Type Selection of fuse type
[Off, gG, NV, B, C, D, K, Custom]
Fuse I
Rated current of selected fuse
Fuse t
Maximum breaking time of selected fuse
Isc factor
Isc factor
[0.20 … 3.00]
Test
Selection of test
[-, L-PE, L1-PE, L2-PE, L3-PE]
Ia (Ipsc)
Minimum short circuit current for selected fuse or custom value
Refer to
Fuse tables guide
for detailed information on fuse data.
Connection diagram
Figure 7.44: Connection of 4-wire test lead
Measurement procedure
Enter the
Z loop 4W
function.
Set test parameters / limits.
Connect test cable to the instrument.
Connect 4-wire test lead to the object under test, C1, P1 terminals to
phase and C2, P2 terminals to PE; see
Start the measurement.
Save results (optional).
