BS G 208:1970
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for general requirements for electrical relays up to 10 A rating
Hardcopy , PDF
09-27-2012
English
01-30-1970
Specification
Foreword
1 General requirements
1.1 Scope
1.2 General
1.3 Declarations
1.4 Markings
2 Particular requirements
2.1 Construction
2.2 Environmental requirements
2.3 Magnetic interference
2.4 Radio interference
2.5 Transient voltages
2.6 Flammability
2.7 Explosion proofness
2.8 Fluid contamination
2.9 Salt corrosion
3 Tests
3.1 General
Type tests
3.2 Strength of terminals
3.3 Tests (at normal ambient temperatures)
3.3.1 Coil resistance
3.3.2 Terminal voltage drop - low voltage
3.3.3 Terminal voltage drop - nominal voltage
3.3.4 Pull-in
3.3.5 Drop-out
3.3.6 Pull-in time
3.3.7 Drop-out time
3.3.8 Dielectric strength
3.3.9 Insulation resistance
3.4 High temperature tests (at maximum ambient
temperature)
3.5 Electrical endurance test
3.6 Tests to be carried out after the endurance test
3.7 Electrical overload test
3.8 Short circuit tests
3.9 Measurement of compass safe distance
3.10 Radio interference (a.c. energized relays) test
3.11 Transient voltage test
3.12 Acceleration test
3.13 Vibration test
3.14 Climatic tests
3.15 Relay sealing test (hermetically sealed relays)
3.16 Explosion proofness test
3.17 Salt corrosion test
3.18 Fluid contamination test
3.19 Strip examination and report
Production acceptance tests
3.20 Markings
3.21 Functioning tests (at normal ambient
temperatures)
3.22 Relay sealing test (hermetically sealed relays)
Quality assurance tests
3.23 General
3.24 Selection of samples
3.25 Test schedule
Appendices
A Type test schedule
B Quality assurance test schedule
C Fluid contamination procedure
Figure
1 Typical short circuit test circuit
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