Leakage currents
Clearances
Hazards
Overcurrent protection
Electrical safety
Safety measures
Dielectric strength
Strength of materials
Testing conditions
Electric load
Circuit diagrams
Stability
Constant-voltage sources
Design
Protected electrical equipment
Ventilation
Electronic power supplies
Electrical testing
Working range
Interfaces
Electric power systems
Thermal testing
Ratings
Electronic equipment and components
Uninterruptible power systems
Leakage paths
Marking
Electrical insulation
Electric terminals
Instructions for use