Russian standards
Single-operator single-phase transformers for manual arc welding. General technical requirements
Document status: Active
Explosive atmospheres. Part 17. Electrical installations inspection and maintenance
Document status: Active
Explosionproof electrical apparatus. Type of protection 'e'. Technical requirements and methods of testing
Document status: Active
Porcelain and glass pin-type insulators for voltage 1-35 kV. General specifications
Document status: Active only in RF