Chambers are intended for work in electric conditions of three-phase alternating current with a frequency of 50 and 60 Hz with a voltage of 6 and 10 kV for system with the isolated or grounded neutral via the dugogasyashchy reactor.
Are made for needs of a national economy. From chambers of this type the distributing devices serving for reception and distribution of the electric power gather. The principle of work is defined by set of schemes of the main and auxiliary chains of chambers. A climatic modification At, category of placement 3 in accordance with GOST 15150.
Service conditions: - height above sea level - no more than 1000 m; - temperature of air is from-25 to + 40 C; - relative humidity of air of 80%; - environment is inexplosive, not containing aggressive gases and vapors, and also production dust in the concentration destroying metal and isolation.