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prEN 50089

Cast resin partitions for metal enclosed gas-filled high-voltage switchgear and controlgear

General information
Draft
Base Documents
prEN 50089
Directives or regulations
None
Standard history
Status
Date
Type
Name
Main
01.01.2003
Main
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. Gases with insulating properties are dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases. 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 arrestors; — busbars and connections; — cable connections / terminations — cable bushings — etc. 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 e.g. current and voltage transformer are not excluded. This document does not apply to high voltage bushings (see EN 60137, EN 61462 and EN 62155).
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