1 Scope
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:
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— circuit-breakers;
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— switch-disconnectors;
-
— disconnectors;
-
— earthing switches;
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— current transformers;
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— voltage transformers;
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— surge arresters;
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— busbars and connections;
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— cable connections/terminations;
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— 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).