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United power system and isolated power systems. Relay protection and automation. Directional carrier-current protection of power lines 110–220 kV. Functional requirements

Document status: Active

Rod aluminium wire. Technical conditions

Document status: Replaced by GOST 13843-2019

Unified system for design documentation. Conventional representation of gears, racks, worms and chain wheels

Document status: Active

State system for ensuring the uniformity of measurements. Time and frequency measurements. Terms and definitions

Document status: Active

Gas-fired air heaters with air-flue gases mixing with forced convection for heating non-domestic premises nominal heat output of up to 300 kW

Document status: Active

Refractories. Stationary method of thermal conductivity determination

Document status: Active