The Fault Passage Indicators are used to locate short-circuit (PtP) and earth faults (PtG) in MV overhead or underground line distribution networks. The indicators will fully cover the different fault configurations that may occur.
The indicators are placed at strategic locations along the line, eg. after branching points and sectionalizers.
Live line installation makes installation safe, easy and fast. Nortroll's fault indicators provide fast fault localisation enabling reduction in outage times. This represents enhanced service to the customers thereby improving the utilities image and significant reduction in the cost related to faults and outages.
Another important aspect of using fault indicators is that unnecessary operations of circuitbreakers and sectionalizers to locate faults are avoided. This way the indicators help reduce wear and tear as reclosing cycles causes stress to the switchgear.
General fault detection principle:
All indicators installed between the feeding substation and the fault will operate when a fault occurs. The indicators placed behind the fault, will remain idle. Upon detecting a fault on the line, the indicator gives off an intermittent LED and/or Xenon type flashing and also remotely by GSM network for some Nortroll products.
Fault indicators for MV underground lines
Programmable short-circuit and earth fault indicators – Linetroll 111K
Programmable short-circuit and earth fault indicators - Linetroll 111K
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Programmable short-circuit and earth fault indicators – Linetroll 3100
Programmable short-circuit and earth fault indicators - Linetroll 3100
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Programmable and directional short-circuit and earth fault indicator – Linetroll 3500
Programmable and directional short-circuit and earth fault indicator - Linetroll 3500
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Line mounted programmable short circuit and earth fault indicator – Linetroll 110Eu
Line mounted programmable short circuit and earth fault indicator - Linetroll 110Eu
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Programmable short-circuit and earth fault indicator – Cabletroll 2320_2330
Programmable short-circuit and earth fault indicator - Cabletroll 2320_2330
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Programmable and directional short circuit and earth fault indicator – Cabletroll 3500
Programmable and directional short circuit and earth fault indicator - Cabletroll 3500
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