BS 7821-2.1:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high voltage and/or low voltage side General requirements
Hardcopy , PDF
31-08-2007
English
15-09-1995
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Committees responsible
National foreword
Foreword
1. General
2. Definitions
3. Electrical characteristics
4. Design characteristics
5. Transformer requirements
6. Distance between bushings
7. Tests
Figures
1. Transformer with cable boxes, type 1 side mounted
2. Unit substation transformer, with cable boxes type 1
side mounted
3. Transformers with cable boxes, type 1 cover mounted
4. Cover mounted, air filled common HV/LV cable box
type 2
5. Unit substation transformers, cover mounted
6. Typical flange for flange box
Deals with general requirements for distribution transformers up to 24 kV. Does not give the dimensional requirements for cable boxes and protective enclosures.
| Committee |
PEL/14
|
| DevelopmentNote |
Supersedes 92/29074 DC (10/2005)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| BS 7821-2.3:1998 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high voltage and/or low voltage side Cable boxes type 2 for use on distribution transformers meeting the requirements of BS 7821-2.1 |
| BS 7616:1993 | Specification for bushings for liquid filled transformers above 1 kV and up to 36 kV |
| 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 General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV |
| BS 7821-3:1995 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV Supplementary requirements for transformers with highest voltage for equipment equal to 36 kV |
| BS 171-3:1987 | Power transformers Specification for insulation levels and dielectric tests |
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