Complete switchgear with gas-insulated switchgear (GIS EPA) with rated voltages of 6 (10), 20 and 35 kV and rated currents up to 1250 A, designed for operation in distribution networks of three-phase alternating current frequency of 50 Hz and perform the function of connection, power supply and protection of power transformers. GIS can be installed in networks with radial or double-sided power supply, isolated or earthed through arc suppression reactor neutral.
GIS can be used for completion of nodal substations with a high degree of reliability of power supply. GIS are designed for operation in closed rooms under normal conditions with moderate climate.
Type of climatic execution and placement category of GIS corresponds to execution U3 according to GOST 15150-69 and GOST 15543.1-89. GIS are not designed for operation in explosion and fire hazardous and chemically active environments.
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