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Powerline worker performs maintenance of a lightning arrester on an electrical transmission tower in New Brunswick, Canada. A lightning arrester (alternative spelling lightning arrestor) (also called lightning isolator) is a device, essentially an air gap between an electric wire and ground, used on electric power transmission and telecommunication systems to protect the insulation and ...
A lightning arrester is a device, essentially an air gap between an electric wire and ground, used on electric power systems and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal.
Older lines may use surge arresters every few spans in place of a shield wire; this configuration is typically found in the more rural areas of the United States. By protecting the line from lightning, the design of apparatus in substations is simplified due to lower stress on insulation.
[4] [5] It provides similar protection in case of flashovers and lightning strikes. A surge arrester (also called a lightning arrester) may also be installed between the line (ahead of the cutout) and the ground wire for lightning protection. The purpose of the device is to conduct extremely high voltages present on the line directly to ground.
The second arrest occurred in the west Los Angeles area, where a suspect had allegedly lit a trash can on fire. The Los Angeles Fire Department responded to both incidents. Read more: Wildfires ...
Lightning Replaced by steel tower Radio Normandie Transmitter, Tower West, Fécamp, France [2] November 7, 1940: Free standing lattice tower 113 Storm Langenberg, Germany 1949: Guyed steel tube mast 51 Storm Two masts of a triangle aerial Schwerin-Möwenburgstrasse transmitter, Schwerin, Germany February 10, 1949: Guyed steel lattice mast 120 Storm
The district serves more than 4,500 K-12 students, and covers a 70 square-mile area that includes neighborhoods in Castroville, Prunedale, Moss Landing, Aromas and parts of Salinas, its website says.
However, a direct lightning strike (such as on a radio tower antenna) will cause the shunt to arc and conduct the massive amount of electricity to ground, protecting transmitters and other equipment. Another older form of lightning arrester employs a simple narrow spark gap, over which an arc will jump when a high voltage is present.