fault relay

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• Protective relay — See also: Power system protection In electrical engineering, a protective relay is a complex electromechanical apparatus, often with more than one coil, designed to calculate operating conditions on an electrical circuit and trip circuit breakers …   Wikipedia

• Arc-fault circuit interrupter — An arc fault circuit interrupter (AFCI) is a circuit breaker designed to prevent fires by detecting non working electrical arcs and disconnect power before the arc starts a fire. The AFCI should distinguish between a working arc that may occur in …   Wikipedia

• Digital protective relay — In electrical engineering of power systems, a digital protective relay uses a microcontroller with software based protection algorithms for the detection of electrical faults. Such relays are also termed as microprocessor type protective relays.… …   Wikipedia

• Buchholz relay — In the field of electric power distribution and transmission, a Buchholz relay, also called a gas relay or a sudden pressure relay, is a safety device mounted on some oil filled power transformers and reactors, equipped with an external overhead… …   Wikipedia

• Internet Relay Chat — IRC redirects here. For other uses, see IRC (disambiguation). For IRC channels dedicated to Wikipedia, see Wikipedia:IRC Internet Relay Chat (IRC) is a protocol for real time Internet text messaging (chat) or synchronous conferencing.[1] It is… …   Wikipedia

• Solid state relay — A solid state relay (SSR) is an electronic switch, which, unlike an electromechanical relay, contains no moving parts. The types of SSR are photo coupled SSR, transformer coupled SSR, and hybrid SSR. A photo coupled SSR is controlled by a low… …   Wikipedia

• Athletics at the 1912 Summer Olympics - Men's 4x100 metre relay — The men s 4x100 metre relay was a track and field athletics event held as part of the Athletics at the 1912 Summer Olympics programme. It was the debut appearance of the event, which along with the 4x400 metre relay marked the first relays of… …   Wikipedia

• Utility Relay Company — (Chagrin Falls, Ohio, USA) manufactures programmable protective relays for power distribution systems. The relays, commonly referred to as trip units, are applied on both AC and DC air frame power distribution circuit breakers.Main products [http …   Wikipedia

• TXE — TXE, which stands for Telephone eXchange Electronic, was the designation given to a family of telephone exchanges developed by the British General Post Office (GPO), now BT, designed to replace the ageing Strowger systems. When World War II ended …   Wikipedia

• Network protector — A network protector (also reverse power relay) is a type of electric protective device used in electricity distribution systems. The function of the network protector is to automatically connect and disconnect its associated power transformer… …   Wikipedia

• Glossary of contract bridge terms — These terms are used in Contract bridge[1][2] , or the earlier game Auction bridge, using duplicate or rubber scoring. Some of them are also used in Whist, Bid whist, and other trick taking games. This glossary supplements the Glossary of card… …   Wikipedia