GOST 3091-80

Methods for the petrographic analysis of bituminous coal and anthracite. Part 4. Method of determining microlithotype, carbominerite and minerite composition

Capacitors for power electronics

United power system and isolated power systems. Relay protection. Inductive measuring current transformers for protection with a closed magnetic circuit. Methodology guidelines for determination of time to saturation during short circuits

Petroleum products. Determination of the filterability of lubricating oils. Part 2. Dry oils

Electroacoustics. Audiometric equipment. Part 3. Test signals of short duration

Railway track. Nomenclature of dependability and functional safety indices