Russian standards
Insulation coordination for equipment within low-voltage systems. Part 2-2. Interface considerations. Application guide
Document status: Active
Electrical apparatus for use in the presence of combustible dust. Part 10. Classification of areas where combustible dusts are or may be prepresent
Document status: Active
Uninterruptible power systems (UPS). Part 1. General and safety requirement for UPS
Document status: Active
Explosive atmospheres. Part 33. Equipment protection by special protection 's'
Document status: Active
