BS EN 62271-104:2015

1.1 Scope Subclause1.1 of IEC62271‑1:2007 is not applicable, and is replaced as follows: This part of IEC62271 is applicable to three-pole alternating current switches for rated voltages higher than 52kV, having making and breaking current ratings, for indoor and outdoor installations, and for rated frequencies up to and including 60Hz. This standard is also applicable to the operating devices of these switches and to their auxiliary equipment. NOTE1 Switches for gas insulated switchgear are covered by this standard. NOTE2 Switches having a disconnecting function and called switch-disconnectors are also covered by IEC62271‑102 . NOTE3 Earthing switches are not covered by this standard. Earthing switches forming an integral part of a switch are covered by IEC62271‑102 . The main object of this standard is to establish requirements for switches used in transmission and distribution systems. General-purpose switches for this application are designed to comply with the following service applications: arrying rated normal current continuously; carrying short-circuit currents for a specified time; switching of mainly active loads; switching of no-load transformers; switching of the charging current of unloaded cables, overhead lines or busbars; switching of closed-loop circuits; making short-circuit currents. A further object of this standard is to establish requirements for limited-purpose and special-purpose switches used in transmission and distribution systems. Limited-purpose switches comply with one or more of the service applications indicated above. Special-purpose switches may comply with one or more of the service applications indicated above and, in addition, are suitable for one or more of the following applications: switching single capacitor banks; switching back-to-back capacitor banks; switching shunt reactors including secondary or tertiary reactors switched from the primary side of the transformer; applications requiring an increased number of operating cycles; switching under earth fault conditions in non-effectively earthed neutral systems. 1.2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC60050‑441:1984, International Electrotechnical Vocabulary— Chapter 441: Switchgear, controlgear and fuses IEC60071 (all parts), Insulation co-ordination IEC60071‑1, Insulation co-ordination— Part1: Definitions, principles and rules IEC60270, High-voltage test techniques— Partial discharge measurements IEC62271‑1:2007, High-voltage switchgear and controlgear— Part1: Common specifications
IEC62271-1:2007/AMD1:2011 IEC62271‑100:2008, High-voltage switchgear and controlgear— Part100: Alternating-current circuit-breakers
IEC62271-100:2008/AMD1:2012 IEC62271‑102:2001, High-voltage switchgear and controlgear— Part102: Alternating current disconnectors and earthing switches
IEC62271-102:2001/AMD1:2011
IEC62271-102:2001/AMD2:2013 IEC62271‑110:2012, High-voltage switchgear and controlgear— Part110: Inductive load switching