Foreword
Specification
1 General
1.1 Scope
1.2 Definitions
1.3 General construction
1.4 Arrangement and construction
1.4.1 Mounting attitude
1.4.2 Mounting arrangement
1.4.3 Interchangeability
1.4.4 Endurance
1.4.5 Internal electrical connections
1.4.6 Maximum operating temperature
1.4.7 Overheating
1.4.8 Current measurement
1.5 Terminals
1.6 Components
1.7 Rating
1.8 Supply characteristics
1.9 Efficiency
1.10 Regulation
1.11 Surges
1.12 Ripple content
1.13 Overload conditions
1.14 Environmental conditions
1.15 Acoustic noise
1.16 Radio interference
1.17 Compass interference
1.18 Cooling
1.19 Declarations
1.20 Marking
1.21 Warning notices
2 Tests
2.1 General
2.2 Test conditions
Type tests
2.3 Performance type tests
2.3.1 Voltage regulation
2.3.2 Transient tests
2.3.3 Efficiency and power factor
2.3.4 Input current
2.3.5 Input current waveform
2.3.6 Ripple and output voltage waveform
2.3.7 Protection circuits
2.3.8 Output current rating
2.3.9 Overload capacity
2.3.10 Hot and cold voltage regulation
2.3.11 Insulation resistance
2.3.12 Inrush current
2.4 Environmental type tests
2.4.1 Climatic
2.4.2 Leakage of hermetically sealed equipment
2.4.3 Vibration
2.4.4 Acceleration
2.4.5 Crash acceleration
2.4.6 Radio interference
2.4.7 Compass safe distance
2.4.8 Salt corrosion
2.4.9 Dust and sand
2.4.10 Contamination
2.4.11 Acoustic noise
2.4.12 Imported and exported voltage transients
Production tests
2.5 Production acceptance tests
2.5.1 Voltage regulation
2.5.2 Input current
2.5.3 Ripple
2.5.4 Protection circuits
2.5.5 Insulation resistance
Quality tests
2.6 Production quality tests
2.6.1 Sampling
2.6.2 Climatic (10-day test)
2.6.3 Vibration
2.6.4 Performance at maximum temperature
2.6.5 Further tests
Appendices
A Salt corrosion test
B Dust and sand test
Figure
1 Measuring device for dust and sand test