MI 3155
Eurotest
XD
Test and measurements
124
7.11
Z loop – Fault loop impedance and prospective fault
current
Figure 7.39: Z loop 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
1)
Selection of test
[-, L/PE, L1/PE, L2/PE, L3/PE]
Uc (P)
Contact voltage measurement with external probe
[Off, On]
Earthing system
Ia(Ipsc)
Minimum fault current for selected fuse or custom value
Limit Uc
Contact voltage limit
[12 V, 25 V, 50 V]
1)
With Plug test cable or Plug commander Z loop is measured in the same way regardless
of the setting. The parameter is meant for documentation.
Refer to
Fuse tables guide
for detailed information on fuse data.
Connection diagrams
Figure 7.40: Connection of Plug commander and 3-wire test lead
