US3968601 * 1974年12月19日 1976年7月13日 Brown; Clayton S. Handhole to receive and locate connections of underground secondary electrical power cable terminationsUS3968601 Dec 19, 1974 Jul 13, 1976 Brown Clayton S Handhole to receive and locate connections of underground secondary electrical ...
In a faster variation of this, high-voltage sticks are available that use the AC line voltage to apply a dc voltage to the isolated cable section. Thumper – The thumper applies a pulsed dc voltage to the cable. As its name implies, at the fault the thumper discharges sound like a thump...
It provides a protective housing for secondary cable connections of underground electrical utlities and assures their prompt location by observing its ground surface level cover. The secondary handhole, in one embodiment made of fiberglass, has a three-sided rectangular body, with two sides being ...
It provides a protective housing for secondary cable connections of underground electrical utlities and assures their prompt location by observing its ground surface level cover. The secondary handhole, in one embodiment made of fiberglass, has a three-sided rectangular body, with two sides being ...
Faults in the electrical system are a very great source of power quality problems. On this basis, this review analyzes different solutions to locate the faults in the electrical system to achieve good-quality location of the origin of this disturbance type. Figure 1. Summary of the ...