Russian standards PDF
Plugs, socket-outlets and couplers for industrial purposes. Part 1. General requirements
Document status: Active
Low-voltage switchgear and controlgear. Part 5-1. Control circuit devices and switching elements. Electromechanical control circuit devices
Document status: Active
Electromechanical elementary relays. Part 7. Test and measurement procedures
Document status: Active
Liquid pumps and installation. General terms, definitions, quantities, letter symbols and units. Part 1. Liquid pumps
Document status: Active
