FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 General requirements and conditions
4.1 General
4.2 Workmanship and material
4.3 Acceptance of substitutes or alternatives
4.4 Additions and alterations
4.5 Environmental conditions
4.6 Materials
4.7 Power supply system characteristics
4.8 Electrical apparatus for explosive gas
atmospheres
4.9 Precautions against galvanic corrosion
4.10 Clearance and creepage distances
4.11 Insulation
4.12 Maintenance and inspection
4.13 Cable entries
4.14 Precautions against vibration and mechanical shock
4.15 Location of electrical equipment in units
4.16 Mechanical protection
4.17 Protection from heat, water, steam and oil
4.18 Protection against electrical shock
4.19 Enclosures
4.20 Environmental impact
Annex A (informative) - Guidance on environmental conditions
A.1 General
A.2 K. Climatic conditions
A.3 B. Biological conditions
A.4 C. Chemically active substances
A.5 S. Mechanically active substances
A.6 M. Mechanical conditions
Bibliography