BS G 200:1967

1 General requirements
1.1 Scope
1.2 General
1.3 Rating
1.4 Declarations
1.5 Marking
2 Particular requirements
2.1 Operation
2.2 Construction
2.3 Dimensions
2.4 Environmental requirements
3 Tests
3.1 General
      Type tests
3.2 Mechanical strength tests
3.3 Operating force test
3.4 Mechanical endurance tests
3.5 Voltage drop test
3.6 High voltage and insulation tests
3.7 Temperature rise test
3.8 Electrical endurance test
3.9 Overload tests
3.10 Short-circuit tests
3.11 Vibration test
3.12 Acceleration test
3.13 Climatic test
3.14 Lever bush sealing test
3.15 Switch sealing test
3.16 Explosion-proofness
3.17 Salt corrosion test
3.18 Dust and sand test
3.19 Fluid contamination tests
3.20 Strip examination and report
      Production tests
3.21 Marking and operation
3.22 Operating force test
3.23 Voltage drop test
3.24 High voltage and insulation tests
Quality tests
3.25 Selection of samples
3.26 Electrical endurance test
3.27 Vibration test
3.28 Lever bush sealing test
3.29 Switch sealing test
3.30 Strip examination and report
Appendices
A Type test schedule
B Serviceability tests
C Salt corrosion test
D Dust and sand test
E Fluid contamination tests
Figures
1 Envelope dimensions for miniature lever-operated
      manual switches
2 Fixing holes and details of locating washer
3 Typical test circuit for short-circuit test
4 Measuring device for dust and sand test

Gives requirements for two classes single-hole fixing, miniature lever-operated manual switches used in nominal 28 Vd.c. and 115/200 V three-phase, 400 cycle a.c. systems in aircraft. One type is sealed, the other only at the lever entry. The former being suitable for higher altitude and wider temperature conditions. Includes type test schedule, serviceability, salt corrosion, dust and sand and fluid contamination tests. Illustrates envelope dimensions for miniature lever-operated manual switches, fixing holes and details of locating washer, typical test circuit for short-circuit test, and measuring device for dust and sand test.

This British Standard specifies the requirements for two classes of single-hole fixing, miniature lever-operated manual switches for use in nominal 28 V d.c. and 115/200 V three-phase, 400 cycle a.c. systems in aircraft.

Class 1 switches are sealed and are suitable for higher altitude and wider temperature conditions than Class 2, which are sealed only at the lever entry.