Application - Nortroll LineTroll 110Em User Manual

3. APPLICATION

The application of LINETROLL 110Eµ
usually requires a previous line survey so
that the best use of it may be obtained.
For the best economic benefit it is recom-
mended that the indicators are used:

In easily accessibly line points for easy
monitoring of the indicator in case of
fault, for instance near the road. It is
advisable to take binoculars.

Before and after line points difficult to
reach (mountains, woods, etc.) to
quickly locate the fault.

Next to line branching points, to easily
locate the damaged branch.
When installing indicators at such
points, the use of indicators in every
branch is recommended in order to
provide complete information in the
event of fault. Not doing so may cause
confusion since there may be an
indication in a branch due to a non-
permanent fault while another branch
without indicator may be faulty yet
considered healthy.

Near line points with sectionalisers to
rapidly pinpoint and isolate the fault to
facilitate rapid reconnection the healthy
sections.
LINETROLL-110Er is suitable in:

6-69kV Distribution networks
including SWER-lines.

Radial lines.

Multiple circuit lines (Current reset
must be used)

Solidly-earthed-neutral networks.
LINETROLL 110E /110Eµr User Guide February 2010

Compensated and impedance-earthed-
neutral networks. If indication of earth-
faults are required, the indicators
sensitivity and the networks residual
fault current has to be taken into
account.

On conductors of 5-36 mm diameter.
with special emphasis on:

Areas with unpredictable electro-
magnetic fields caused for example by
parallel lines, as a better suited
complement to the three-phase fault
indicator LINETROLL 111K.
Do not use LINETROLL 110Er on:

Ring lines or multiple fed lines.
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