Komplete switchgear (Hereinafter - switchgear) internal installation, in a metal shell series K-129.Designed for the reception and distribution of electrical energy of three-phase alternating current frequency (50,00 1,25)Hz, voltage 6,10 kV with isolated or grounded through a high-resistance resistor neutral. Climatic design of GIS ""U"" or ""T"", placement category ""3"" according to GOST 15150 and GOST 15543.1.GIS cabinets are designed for operation at an altitude of not more than 1000 m.
above sea level at atmospheric pressure from 86.6 kPa to 106.7 kPa. Switchgear cabinets are designed for operation in the atmosphere of type II according to GOST 15150 with the content of corrosive agents:- sulphurous gas - from 20 to 250 mg/m2 per day;- chlorides - not more than 0,3 mg/m2 per day
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