Russian standards PDF
Electromagnetic compatibility of technical equipment. Methodology for the achievement of the functional safety of technical equipment with regard to electromagnetic disturbance
Document status: Active
Electrical apparatus for explosive gas atmospheres. Part 1. Flameproof enclosures 'd'
Document status: Active
Basic norms of interchangeability. Geometrical product specifications. Tolerances of form, orientation, location and run-out
Document status: Replaced by GOST R 53442-2015