Insulators through polymer are designed to conduct and connect current-carrying elements in electrical apparatus and switchgear of electrical stations and substations of alternating voltage at 10 kV frequency up to 100 Hz. Climatic design of the insulator is UHL, placement category 1 according to GOST 15150. The upper value of ambient air temperature should not exceed 65C when installed in complete switchgears and 80C when installed in closed current conduits.
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