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MI 3152(H)
Eurotest
XC (2,5 kV)
Auto tests
133
8.3
AUTO TN – Auto test sequence for TN earthing system
without RCD
Tests / measurements implemented in AUTO TN sequence
Voltage
Z line
Voltage Drop
Z loop
Rpe
Figure 8.9: AUTO TN menu
Measurement parameters / limits
Fuse type
Selection of fuse type
[gG, NV, B, C, D, K]
Fuse I
Rated current of selected fuse
Fuse t
Maximum breaking time of selected fuse
Limit(dU)
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
See Appendix A for reference fuse data.
Connection diagram
Figure 8.10: AUTO TN measurement