BS EN 50052:2016

This standard BS EN 50052:2016 High-voltage switchgear and controlgear. Gas-filled cast aluminium alloy enclosures is classified in these ICS categories:

• 29.130.10 High voltage switchgear and controlgear

This European Standard applies to cast aluminium alloy enclosures pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations of high-voltage switchgear and controlgear above 1 kV, 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 kV and with gas-filled enclosures with design pressure higher than 300 kPa relative pressure (gauge);

• and with rated voltage above 52 kV.

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.