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In such cases the user should consider the downstream capacitive discharge current to avoid false operation of the non-directional indicators. Some overhead line fault indicators called as pole mounted fault indicators can detect the live line and the fault current from 3 to 5 metres (9.8 to 16.4 ft) below the conductors.
Markers are often installed on overhead lines near airfields, or at river crossings where there is a possibility of float-equipped aircraft using the river. Some markers contain conductor marking lights or strobe lights to improve visibility at night or in fog. An overhead line obstruction warning marker near an airstrip.
Many faults in overhead power lines are transient in nature. When a fault occurs, equipment used for power system protection operate to isolate the area of the fault. A transient fault will then clear and the power-line can be returned to service. Typical examples of transient faults include: momentary tree contact; bird or other animal contact
The conventionally used aid in cable fault testing and location is the cable test van. The van is installed with conventional cable measuring systems for quickly reaching the location of any cable fault. In 20 years that followed, over 2000 fault location vehicles were manufactured, more than half of which were intended for the former USSR.
Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses or trains. Overhead line is designed on the principle of one or more overhead wires situated over rail tracks. Feeder stations at regular intervals along the overhead line supply power from the high-voltage grid.
Scientists have yet to pinpoint the fault that ruptured in New Jersey on April 5 and rattled much of the Northeast. Now, U.S. Geological Survey researchers are in the process of installing new ...
The Haldersons claimed stray voltage from high voltage power lines hurt their 1,000 cow herd and lowered milk production. The jury found that Xcel subsidiary – Northern States Power Company – was "negligent with respect to the delivery of electrical service." The jury awarded $4.09 million for economic damages and another $409,000 for ...
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