MI 3152(H)
Eurotest
XC (2,5 kV)
Tests and measurements
153
7.27
AUTO TN – Auto test for TN earthing system without
RCD
Tests / measurements implemented in AUTO TN
Voltage
Z line
Voltage Drop
Z loop
Rpe
Figure 7.90: AUTO TN 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
I (
U)
1)
Rated current for
U measurement (custom value)
Isc factor
Isc factor
[0.20 ... 3.00]
Limit(ΔU)
Maximum voltage drop
[3.0 % ... 9.0 %]
Limit(Rpe)
Max. resistance
[Off, 0.1
... 20.0
]
Ia(Ipsc (LN), Ipsc (LPE))
Minimum short circuit current for selected fuse or custom
value
1)
Applicable if Fuse type is set to Off or Custom.
Refer to
Fuse tables guide
for detailed information on fuse data.
