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Explosionproof electrical equipment. Part 2. Filling or purging of the pressurized enclosure 'p'
Document status: Active
Electrical installations of buildings. Part 4. Protection for safety. Isolation, switching off, control
Document status: Replaced by GOST R 50571.5.53-2013
Porcelain pin support insulators for voltage above 1000 V. General specifications
Document status: Active
Phenol impregnated cellulose paper foil-clad electrical insulating material of rated combustibility for printed plates. Specifications
Document status: Active