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  • BSI
    BS EN 50243:2002 Outdoor bushings for 24 kV and 36 kV and for 5 kA and 8 kA, for liquid filled transformers
    Edition: 2002
    $313.97
    / user per year

Description of BS EN 50243:2002 2002

This standard is applicable to ceramic insulated outdoor bushings for highest voltages for equipment of 24 kV and 36 kV, with rated currents of 5 kA and 8 kA and frequencies from 15 Hz up to 60 Hz for insulating liquid filled transformers. This standard establishes dimensions to ensure interchangeability and adequate mounting of bushings. Two types of construction are specified, type A and type B, both types for highest voltages for equipment 24 kV and 36 kV and rated currents of 5 kA and 8 kA. The mechanical stresses of the conductor tube make the difference between type A and type B. The conductor tube of type A is axially and radially fixed in the top of the bushing. The inner line terminal of the transformer can be flexible and without any special support for the lower end of the conductor tube. In case of type B, the conductor tube is only radially fixed in the top of the bushing. In that case, a rigid support has to be mounted to fix the lower end of the conductor tube (for example, in combination with a drip proofed sealing end). The drip proofed sealing end is often required in the service requirements. In this case, it is not possible to use type A because of the existing double fixation. Therefore, both bushing types A and B have to be specified. The condition for the usage of type B is that the drip prooved sealing end is able to withstand the mechanical stress in axial direction.

Standard NumberBS EN 50243:2002
TitleOutdoor bushings for 24 kV and 36 kV and for 5 kA and 8 kA, for liquid filled transformers
StatusWithdrawn
Publication Date2002-07-23
Withdrawn Date2023-01-18
Identical National Standard OfEN 50243:2002
DescriptorsOutdoor electric equipment, Frequencies, Electrical insulating materials, Transformers, Rated current, Dimensions, Oil-immersed transformers, Interchangeability, Electrically-insulated bushings, Rated voltage, Liquid electrical insulating materials, Ceramic coatings
ICS29.080.20 Bushings, 29.180 Transformers. Reactors
CommitteePEL/36
ISBN0 580 40135 9
PublisherBSI
Pages22

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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