System of building design documents. Communication and signaling. Working drawings
Document status: Withdrawn
System of building design documents. Interior electric lighting. Working drawings
Document status: Replaced by GOST 21.608-2014
Power transformers. Methods of measuring partial discharge characteristics during power frequency voltage testing
Document status: Active
Excitation system for turbogenerators, hydrogenerators and synchronous condensers. General requirements
Document status: Replaced by GOST 21558-2018
