BS 7798:1998
Current
The latest, up-to-date edition.
Specification for industrial immersion heaters using metal-sheathed elements
Hardcopy , PDF
English
05-15-1998
Committees responsible
Foreword
Specification
1 Scope
2 References
3 Definitions
4 Heating elements
5 Rating
6 Degree of protection
7 Electrical insulation
8 Thermal insulation
9 Construction
10 Supply connections
11 Terminations for external conductors
12 Provision for earthing
13 Internal wiring
14 Mounting of components
15 Screws and connections
16 Creepage distances, clearances and distances through
insulation
17 Controls
18 Labels and warning notices
19 Routine testing
20 Instructions
21 Marking
Annexes
A (normative) Methods of test
B (informative) Guidance for installation of immersion
heaters
Tables
1 Power output
2 Minimum thickness of metallic enclosures
3 Terminal sizes
4 Fastening strength of terminals
5 Dimensions of pillar terminals
6 Dimensions of screw terminals
7 Dimensions of stud terminals
8 Minimum spacings
9 Creepage distances and clearances
10 Temperature marking for supply connections
11 Symbols for marking
A.1 Torque values for screw torque test
A.2 Torque values for screw torque test, for terminals
described in 11.2.3 and 11.3.3
List of references
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