Support polymer insulators for installation under a canopy, outdoors or in rooms where temperature and humidity fluctuations do not differ significantly from those in the open air, designed for insulation and fixing of current-carrying parts in electrical apparatuses, open switchgear (ORU), auxiliary transformers (ATS) of nuclear power plants, substations and nuclear plants of alternating current voltage of 10 kV with frequency up to 100 Hz.Climatic design of insulators is UHL and T, placement category 2 according to GOST 15150. Insulators are designed for operation at an altitude of more than 1000 m above sea level at ambient air temperature from minus 60C to plus 50C and relative humidity of 80%.
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