IEEE 665-1995 pdf download IEEE Guide for Generating Station Grounding
3.1 bonding: The permanent joining of metallic parts to form an electrically conductive path that will ensureelectrical continuity and the capacity to conduct safely any current likely to be imposed.
3.2 bonding jumper: A reliable conductor to ensure the required electrical conductivity between metal partsthat need to be electrically connected.
3.3 equipment grounding conductor: The conductor used to connect the noncurrent-carrying metal partsof equipment, raceways, and other enclosures to the service equipment, the service power source(S) groundor both.
3.4 four-wire system: A three-phase system consisting of three phase conductors and a neutral conductor.
3.5 generating station: A plant wherein electric energy is produced by conversion from some other form olenergy (for example, chemical, nuclear, solar, mechanical, or hydraulic) by means of suitable apparatus.This includes all generating station auxiliaries and other associated equipment required for the operation ofthe plant, Not included are stations producing power exclusively for use with communications systems.
3.6 grid mesh: Any one of the open spaces enclosed by the grounding grid conductors.
3.7 ground grid: A system of horizontal ground electrodes that consists of a number of interconnected bareconductors buried in the earth, providing a common ground for electrical devices or metallic structures, usu:ally in one specific location.
NOTE–Grids buried horizontally near the surface of the carth are also effective in controlling the surface potential gradients. A typical grid usually is supplemented by a number of ground rods and may be further connected to auxiliaryground electrodes to lower its resistance with respect to remote earth.
3.8 ground well: A hole with a diameter greater than an inserted ground rod, drilled to a specified depth, andbackfilled with a highly conductive material. The backfill will be in intimate contact with the earth.
3.9 grounding conductor: A conductor used to connect equipment or the grounded circuit of a wiring system to a grounding electrode or electrodes (i.e.. ground grid).
3.10 high-voltage system: An electric system having a maximum root-mean-square ac voltage above72.5 kV
3.11 isolated-phase bus: A metal-enclosed bus in which each phase conductor is enclosed by an individuametal housing separated from adjacent conductor housings by an air space.
3.12 metal-enclosed us: An asscmbly of conductors with associated connections, joints, and insulatingsupports within a grounded metal enclosure.
3.13 neutral ground: An intentional ground applied to the neutral conductor or neutral point of a circuit.
transformer,machine, apparatus, or system.
3.14 nonsegregated-phase bus: A meta-enclosed bus in which all phase conductors are in a common metalenclosure without barriers between the phases.
IEEE 665-1995 pdf download
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