Standard

NEK EN 50068:1991

Withdrawn

Note: This standard has a new edition: NEK EN 50068:2018

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Abstract

This standard applies to fusion welded wrought steel enclosures pressurized with dry air, inert gas, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations of high-voltage switchgear and controlgear with rated voltages 72,5 kV and above, where the gas is used principally for its dielectric and/or arc-quenching properties. The enclosures comprise parts of electrical equipment not necessarily limited to the following examples: circuit-breakers, switch-disconnectors, disconnectors, earthing switches, current transformers, voltage transformers, surge arrestors, busbars and connections. The scope also covers pressurized components such as the centre chamber of live tank switchgear, gasinsulated current transformers, etc.

Document information

  • Standard from NEK
  • Published:
  • Withdrawn:
  • Edition: 1991-02
  • Version: 1
  • Document type: NAT
  • ICS 29.130.10
  • National Committee NEK/NK17A+C

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