BS 5175:1976
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for safety of commercial electrical appliances using microwave energy for heating foodstuffs
Hardcopy , PDF
06-15-2000
English
06-30-1976
Foreword
Co-operating organizations
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
10 Electrical input and electrical output
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
32 Microwave leakage
Appendices
A Spring-operated impact-test apparatus
B List of British Standards for component parts
C Microwave leakage survey meter for microwave ovens
Tables
1 Diameter of silver wire
2 Permissible temperature rises
3 Insulation resistance
4 Test voltages
5 Permissible temperature of windings under abnormal
operation
6 Test force for screwed glands
7 Size of flexible cord
8 Conduit entry sizes
9 Conductor cross-sectional areas for which terminals
shall be suitable
10 Dimensions of pillar-type terminals
11 Dimensions of screw-type terminals
12 Dimensions of stud-type terminals
13 Axial pull on conductors
14 Torque values for screws and nuts
15 Creepage distances, clearances and distances through
insulation
16 Creepage distances and clearances above 250 V r.m.s.
17 Clearances and creepage distances (when resonance
voltage occurs)
Figures
1 Diagram for leakage current measurement
2 Diagram for electric strength test at operating
temperature
3 Impact-test apparatus
4 Device for testing shoulders in conduit entries
5 Ball-pressure apparatus
6 Apparatus for hot-mandrel test
7 Arrangement and dimensions of the electrodes for the
tracking test
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