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IEC 60071-2:2018 RLV

Revidert

Merknad: Denne standarden har en ny utgave: IEC 60071-2:2023 ED5

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IEC 60071-2:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60071-2:2018 constitutes application guidelines and deals with the selection of insulation levels of equipment or installations for three-phase electrical systems. It gives guidance for the determination of the rated withstand voltages for ranges I and II of IEC 60071-1 and to justify the association of these rated values with the standardized highest voltages for equipment. It covers three-phase systems with nominal voltages above 1 kV. This edition includes the following significant technical changes with respect to the previous edition: a) the annex on clearance in air to assure a specified impulse withstand voltage installation is deleted because the annex in IEC 60071-1 is overlapped; b) 4.2 and 4.3 on surge arresters are updated; c) 4.3.5 on very-fast-front overvoltages is revised. Annex J on insulation co-ordination for very-fast-front overvoltages in UHV substations is added; d) Annex H on atmospheric correction – altitude correction is added. e) Annex I on evaluation method of non-standard lightning overvoltage shape is added. It has the status of a horizontal standard in accordance with IEC Guide 108.

Dokumentinformasjon

  • Redline fra IEC
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 4
  • Versjon: 1
  • Varetype: IS
  • Products.Specs.pages
  • ICS 29.080.30
  • ISO TC TC 99

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