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NEK EN 50089:2022

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Abstract

This document applies to pressurized partitions used in indoor and outdoor installations of high-voltage AC and DC switchgear and controlgear with rated voltages (Ur) above 1 kV AC / 1,5 kV DC and with design pressure higher than 300 kPa, where the gas is used principally for its dielectric and/or arc-quenching properties.The partitions comprise pressurized barriers in electrical equipment not necessarily limited to the following examples:- circuit-breakers;- switch-disconnectors;- disconnectors;- earthing switches;- current transformers;- voltage transformers;- surge arresters;- busbars and connections;- cable connections/terminations;- cable bushings.Partitions which are only pressurized from one side are also covered.1 kV AC / 1,5 kV DC means it is valid for the apparatus applied and where the partitions are installed; however, the application of voltages below 1 kV AC / 1,5 kV DC as in, for example, current and voltage transformers are not excluded.This document does not apply to high voltage bushings (see EN 60137, EN 61462 and EN 62155).

Document information

  • Standard from NEK
  • Published:
  • Edition: 2022-10
  • Version: 1
  • Document type: NAT
  • ICS 29.130.10
  • National Committee NEK/NK17

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