BS 7654:1993

Committees responsible
Foreword
Specification
1. General
1.1 Scope
1.2 Vacant
1.3 References
1.3.1 Normative references
1.3.2 Informative references
2. Definitions
3. Classification
3.101 Type 1
3.102 Type 2
4. Characteristics
4.1 General
4.2 Type of equipment
4.3 Rated and limiting values for the main circuit
5. Product information
5.1 Nature of information
5.2 Marking
6. Normal service and mounting conditions
6.1 Normal service conditions
6.1.1 Ambient air temperature
6.2 Vacant
6.3 Mounting
7. Constructional and performance requirements
7.1 Constructional requirements
7.1.1 Materials
7.1.2 Current-carrying parts and their connections
7.1.3 Clearances and creepage distances
7.1.4 Vacant
7.1.5 Vacant
7.1.6 Vacant
7.1.7 Terminals
7.1.8 Vacant
7.1.9 Vacant
7.1.10 Enclosures for equipment
7.1.11 Degrees of protection of enclosed equipment
7.2 Performance requirements
7.2.1 Vacant
7.2.2 Temperature-rise
7.2.3 Dielectric properties
7.2.101Performance on overload and short circuit
8. Tests
8.1 Kinds of tests
8.1.1 General
8.1.2 Type tests
8.2 Conformity with constructional requirements
8.2.1 Materials
8.2.2 Equipment
8.2.3 Enclosures for equipment
8.2.4 Mechanical properties of terminals
8.3 Performance
8.3.1 Vacant
8.3.2 General test conditions
8.3.3 Performance under no load, normal load and
       overload conditions
8.3.4 Performance under short-circuit conditions
Tables
101. Type tests
102. Maximum temperature-rise at rated current
103. Values for overload test current
Figures
101. Fuse-links street lighting fuses
102. Time current zones for 6A, 16A and 25A
103. Time current zones for 10A and 20A
104. Pillar terminal with direct pressure
105. Apparatus for impact test
List of references

Specifies the requirements and tests for use with single phase or one phase of a three phase electricity supply 440 V a.c. (max) supply system at 50 Hz with the neutral effectively earthed.