protective ground

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• Protective sign — Protective signs are symbols to be used during an armed conflict to mark persons and objects under the protection of various treaties of International Humanitarian Law (IHL). While their essential meaning can be summarized as Don t shoot! or Don… …   Wikipedia

• 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

• Ground (electricity) — In electrical engineering, ground or earth may be the reference point in an electrical circuit from which other voltages are measured, or a common return path for electric current, or a direct physical connection to the Earth. A typical earthing… …   Wikipedia

• Ground Defense Force! Mao-chan — Mao chan redirects here. For the figure skater often referred to in the Japanese press by that nickname, see Mao Asada. Earth Defender! Mao chan 陸上防衛隊まおちゃん (Ground Defense Force! Mao chan) Genre Comedy, Magical girl …   Wikipedia

• Ground and neutral — For uses of the term ground or earth in electricity but not in the context of mains wiring, see ground (electricity). Since the neutral point of an electrical supply system is often connected to earth ground, ground and neutral are closely… …   Wikipedia

• Ground Zero Indicator — The Ground Zero Indicator, known by the accronym GZI was a specially designed shadowgraph instrument used by the British Royal Observer Corps during the Cold War to locate the Ground Zero of any nuclear explosion.OverviewThe GZI consisted of four …   Wikipedia

• ground pearl — ▪ insect       any of a group of scale insects in the family Margarodidae (order Homoptera) that have an iridescent globular body 2 to 4 mm (0.08 to 0.16 inch) in length. Ground pearl insects vary in colour from metallic bronze, red, or gold to… …   Universalium

• 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

• Personnel Armor System for Ground Troops — U.S. soldiers wearing the PASGT helmet Personnel Armor System for Ground Troops, sometimes abbreviated to PASGT, was a combat helmet and ballistic vest used by the American military from the mid 1980s until 2005, when the system was succeeded by… …   Wikipedia

• 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

• Future Combat Systems Manned Ground Vehicles — FCS Manned Ground Vehicles XM1202 Mounted Combat System vehicle illustration Type Tracked armored fighting vehicles Place of origin …   Wikipedia