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D.C. supplied electronic ballasts for tubular fluorescent lamps. General and safety requirements
Document status: Active
Rotating electrical machines. Part 18-34. Functional evaluation of insulation systems. Test procedures for form-wound windings. Evaluation of thermomechanical endurance of insulation systems
Document status: Active
Through penetration for cables, hermetic inputs and through penetration of electric current types. Requirements of fire safety. Fire resistance test methods
Document status: Active
Explosionproof electrical apparatus. Flameproof enclosure. Technical requirements and methods of testing
Document status: Active
Connecting devices. Electrical copper conductors. Safety requirements for screw-type and screwless-type clamping units. Part 1. General requirements and particular requirements for clamping units for conductors from 0,2 up to 35 sq. mm (included)
Document status: Active