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BS 7821-1:1995 Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 1. General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV

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This harmonization document covers transformers from 50 to 2500 kVA intended for operation in three-phase distribution networks, for indoor or outdoor continuous service, 50 Hz, immersed in mineral-oil, natural cooling, with two windings: - a primary (high-voltage) winding with a highest voltage for equipment from 3,6 to 24 kV, - a secondary (low-voltage) winding with a highest voltage for equipment not exceeding 1,1 kV. NOTE 1: This document may be applied, either as a whole or in part, to transformers immersed in a synthetic insulating liquid. NOTE 2: This document may be applied, either as whole or in part, to transformers having windings with more than one rated voltage. In this case the rated power for each rated voltage shall be specified by the purchaser. NOTE 3: 011-immersed transformers with other highest voltages for equipment could be matter of other parts of HD 428 series.
Contributor(s):
MAR - Data Entry Person
Primary Item Type:
British Standard
Secondary Item Type(s):
Malaysian Standard
Identifiers:
ISBN 0580245519
ICS 29.180 Transformers. Reactors
Language:
English
Subject Keywords:
Short-circuit currents; Three-phase transformers; Distribution transformers; Sound intensity; Oil-immersed transformers; Rated power; Electrically-insulated bushings; Dimensions; Design; Power transformers; Rated frequencies; Power losses; Electrical insulation; Electrical impedance; Alternating-current transformers; Rated voltage; High-voltage equipment
First presented to the public:
12/29/2022
Original Publication Date:
9/15/1995
Previously Published By:
British Standards Institution
Place Of Publication:
London, United Kingdom
Citation:
Extents:
Number of Pages - 14
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2022-12-29 14:18:31.999
Submitter:
Muhamad Azmil Ramli

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BS 7821-1:1995 Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 1. General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV1 2022-12-29 14:18:31.999
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