Russian standards
Electromagnetic relays type ANSh2 and ANSh5. Quality requirements for certified production
Document status: Active
Explosive atmospheres. Part 33. Equipment protection by special protection 's'
Document status: Active
Low-voltage power supplies, d.c. output. Part 6. Requirements for low-voltage power supplies of assessed performance
Document status: Active
Surface type evaporator for steam-turbine electric station. General specification
Document status: Active