BS 7821-1:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV
Hardcopy , PDF
31-07-2007
English
15-09-1995
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Committees responsible
National foreword
Specification
Foreword
1 General
2 Electrical characteristics
3 Design requirements
4 Dimensional characteristics
5 Accessories
Annexes
A (informative) A-deviations
B (normative) Normative references
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.
| Committee |
PEL/14
|
| DevelopmentNote |
Supersedes 92/29073 DC (01/2004)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| HD 428.1 S1:1992/AC:2011 | Identical |
| BS 7877:1999 | Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformers |
| 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 7821-2.1:1995 | 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 |
| BS 171-1:1978 | Power transformers General |
| IEC TR 60616:1978 | Terminal and tapping markings for power transformers |
| HD 428.2.3 : 200S1 | THREE-PHASE OIL-IMMERSED DISTRIBUTION TRANSFORMERS 50 HZ, FROM 50 TO 2500 KVA WITH HIGHEST VOLTAGE FOR EQUIPMENT NOT EXCEEDING 36 KV PART 2: DISTRIBUTION TRANSFORMERS WITH CABLE BOXES ON THE HIGH-VOLTAGE AND/OR LOW VOLTAGE SIDE SECTION 3: CABLE BOXES TYPE 2 FOR USE ON DISTRIBUTION TRANSFORMERS MEETING THE REQUIREMENTS OF HD 428.2.1 |
| HD 428.2.2 : 200S1 | THREE-PHASE OIL-IMMERSED DISTRIBUTION TRANSFORMERS 50 HZ, FROM 50 TO 2500 KVA WITH HIGHEST VOLTAGE FOR EQUIPMENT NOT EXCEEDING 36 KV - PART 2: DISTRIBUTION TRANSFORMERS WITH CABLE BOXES ON THE HIGH-VOLTAGE AND/OR LOW VOLTAGE SIDE - SECTION 2: CABLE BOXES TYPE 1 FOR USE ON DISTRIBUTION TRANSFORMERS MEETING THE REQUIREMENTS OF HD 428.2.1 S1 |
| HD 428.2.1 : 200S1 | 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 |
| BS 7697:1993 | Nominal voltages for low voltage public electricity supply systems |
| BS 171-3:1987 | Power transformers Specification for insulation levels and dielectric tests |
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