High-Voltage Switchgear and Controlgear. Gas-filled wrought steel enclosures
This document applies to wrought steel enclosures and their welding. These enclosures are pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor and outdoor installations of high-voltage switchgear and controlgear with rated voltages above 1kV , where the gas is used principally for its dielectric and/or arc-quenching properties with rated voltages:
above 1 kV and up to and including 52 k9 concerning gas-filled compartments with design pressure higher than 300Â kPa relative pressure (gauge);
above 52 kV concerning all gas-filled compartments.
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;
etc.
The scope also covers enclosures of pressurized components such as the centre chamber of live tank switchgear, gas-insulated current transformers, etc.
| SDO | BSI: British Standards Institution |
| Document Number | EN 50068 |
| Publication Date | Dec. 6, 2018 |
| Language | en - English |
| Page Count | |
| Revision Level | |
| Supercedes | |
| Committee | PEL/17 |
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