DD ENV 1954:1997
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Internal and external fault behaviour of safety related electronic parts of gas appliances
Hardcopy , PDF
12-31-2007
English
04-15-1997
CONTENTS
Foreword
1. Scope
2. Normative references
3. Definitions
3.1 General
3.2 Definitions specific to complex electronics
4. Requirements
4.1 Fault control
4.2 Fault avoidance
5. Information
6. External fault behaviour
7. Fault behaviour under external influence
7.1 Performance tests
7.2 Climatic tests
7.3 Supply voltage variations
7.4 Supply voltage interruptions or decreases
7.5 Supply frequency variations
8. Electromagnetic phenomena
8.1 Voltage surges
8.2 Fast transient brust
8.3 Electromagnetic radiation - Immunity
8.4 Electrostatic discharges
9. Endurance
9.1 Design requirements
9.2 Test method
Annexes
A (normative) Failure modes for electronic components
B (normative) Fault assessment flowcharts
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