Designed for isolation and fastening of devices of contact network of railways of alternating current voltage 25kV with frequency up to 100Hz and direct current voltage 3 kV in the atmosphere with different degree of pollution. Climatic execution UHL, placement category 1 according to GOST 15150, meet the requirements of GOST 15543.1.
The surface temperature of insulators during operation can be within the range from plus 70 to minus 60C. Insulators belong to products of E35 group according to the state standards classifier and are intended for operation in areas of I-VII degree of atmospheric pollution (AZA).
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