VON SST15-832, Руководство по эксплуатации

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VON MODEL SST15-832 ARC REFLECTION SECTIONALIZING SYSTEM Page 12
Figure 4
Figure 5
Figure 6
Figure 4 shows a typical sectionalizing
trace. The up blips before the end of the
cable are made by transformers.
Splices along the cable route make the
same signature but smaller.
Figure 5 shows a faulted trace. Notice
that the fault is close to the far end of
the cable. Instead of measuring from
the current end to the fault, it may be
easier to measure from the far end.
The distance from the far end can be
determined by subtracting the distance
to the fault (948 ft) from the previously
determined length of the cable (1022 ft).
This gives you an approximate distance
of 74 feet from the far end of the cable.
Figure 6 shows another faulted trace
for the cable. The fault is at
approximately 364 feet.