SR EN IEC 62271-200:2021

IEC 62271-200:2021(E) is applicable to prefabricated metal-enclosed switchgear and controlgear assemblies designed for: – alternating current; – rated voltages above 1 kV and up to and including 52 kV; – service frequencies up to and including 60 Hz; – indoor and outdoor installation. The assembly can include air-insulated and/or fluid-filled compartments. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) clause numbering aligned with IEC 62271-1:2017, including the adoption of the subclause names of Clause 3; b) in Clause 3 specific definitions are added for "in service", "normal operating condition" and "normal use"; c) internal arc testing on pole-mounted switchgear is taken out of this document, as it is now covered by the specific standard IEC 62271-214:2019; d) a more precise description of earthing circuit is given with the inclusion of ratings and test requirements; e) number of