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High Voltage Isolation and Ground Potential Rise — This article outlines the principles of High Voltage Isolation (HVI) and Ground Potential Rise (GPR). Most often questions of concern arise to anyone associated with the use of any communication signal (analog or digital) via a metallic or fiber… … Wikipedia
Relay — This article is about the electrical component. For other uses, see Relay (disambiguation). Automotive style miniature relay, dust cover is taken off A relay is an electrically operated switch. Many relays use an electromagnet to operate a… … Wikipedia
Power line communication — or power line carrier (PLC), also known as power line digital subscriber line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN), or broadband over power lines (BPL) are systems for carrying data on a conductor… … Wikipedia
IEC61850 — IEC 61850 [ [http://www.61850.com IEC 61850 overview] .] is a standard for the design of electrical substation automation. IEC61850 is a part of the International Electrotechnical Commission’s (IEC) Technical Committee 57 (TC57) [… … Wikipedia
Intelligent electronic device — An Intelligent Electronic Device (IED) is a term used in the electric power industry to describe microprocessor based controllers of power system equipment, such as circuit breakers, transformers, and capacitor banks. DescriptionIEDs receive data … Wikipedia
technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… … Universalium