BS 3456-2.21:1972
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for safety of household and similar electrical appliances. Particular requirements Electric immersion heaters
Hardcopy , PDF
04-14-1997
English
05-15-1972
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Cooperating organizations
Foreword
Specification
1. Scope
2. Definitions
3. General requirement
4. General conditions for the tests
5. Rating
6. Classification
7. Marking
8. Protection against electric shock
9. Starting of motor-operated appliances
10. Input
11. Heating
12. Operation under overload conditions
13. Electrical insulation at operating temperature
14. Radio-interference suppression
15. Moisture resistance
16. Insulation resistance and electric strength
17. Overload protection
18. Endurance
19. Abnormal operation
20. Stability and mechanical hazards
21. Mechanical strength
22. Construction
23. Internal wiring
24. Components
25. Supply connection and external flexible cables and
cords
26. Terminals for external conductors
27. Provision for earthing
28. Screws and connections
29. Creepage distances, clearances and distances
through insulation
30. Resistance to heat, fire and tracking
31. Resistance to rusting
Appendices
A. Preferred dimensions for electric immersion heaters
B. Effect of non-metallic materials on water quality
Table
1. Dimensions of immersion heater heads
Figure
1. Preferred dimensions
Specifies requirements for electric immersion heaters for household use.
| Committee |
W/-
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| UNE-EN ISO 9097:1996 | Identical |
| BS 1566-1:1984 | Copper indirect cylinders for domestic purposes Specification for double feed indirect cylinders |
| BS 5449:1990 | Specification for forced circulation hot water central heating systems for domestic premises |
| BS 699:1984 | Specification for copper direct cylinders for domestic purposes |
| BS 417-2:1987 | Specification for galvanized low carbon steel cisterns, cistern lids, tanks and cylinders Metric units |
| BS 1566-2:1984 | Copper indirect cylinders for domestic purposes Specification for single feed indirect cylinders |
| BS 7491-2:1992 | Glass fibre reinforced plastics cisterns for cold water storage Specification for one-piece cisterns of nominal capacity from 500 L to 25000 L |
| BS 5615:1985 | Specification for insulating jackets for domestic hot water storage cylinders |
| BS 6700:1997 | Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages |
| BS 4213:1991 | Specification for cold water storage and combined feed and expansion cisterns (polyolefin or olefin copolymer) up to 500 L capacity used for domestic purposes |
| BS 7491-1:1991 | Glass fibre reinforced plastics cisterns for cold water storage Specification for one-piece cisterns of capacity up to 500 L |
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