DIN EN 50522:2011-11

This standard supplements DIN EN 60936-1 (VDE 0101-1) regarding the specifications for earthing systems of electrical installations in systems with nominal voltage above 1 kV a.c. and nominal frequency up to and including 60 Hz, so as to provide safe and proper functioning for the use intended. For the purpose of this standard, an electrical power installation is considered to be one of the following: a) substation, including substation for railway power supply; b) electrical installations on mast or pole and/or tower; switchgear and/or transformers located outside a closed electrical operating area; c) one (or more) power station(s) located on a single site; - the installation includes generators and transformers with the associated switchgear and electrical auxiliary systems. Connections between generating stations located on different sites are excluded; d) the electrical system of a factory, industrial plant or other industrial, agricultural, commercial or public premises. The responsible committee is K 222 "Errichten von Starkstromanlagen über 1 kV und deren Erdung" ("Erection of electrical power installations exceeding 1 kV and their earthing") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.