Polymer support insulators of type OSK 10-35 are designed for insulating and securing current-carrying parts in electrical apparatuses and distribution devices of power plants and substations operating with alternating current at 35 kV and frequencies up to 100 Hz. They provide reliable insulation within an ambient temperature range from -60 °C to +50 °C. The climatic version and placement category comply with UHL1 according to GOST 15150. The insulators are manufactured according to TU 3494-024-82442590-2015 and conform to GOST R 52082.

Key Technical Specifications:

• Rated Ultimate Torsional Moment: 600 kN·m
• Rated Ultimate Bending Strength: 10 kN
• Construction Height: from 400 mm to 500 mm, depending on the model
• Insulation Height: from 350 mm to 425 mm
• Creepage Distance: from 1050 mm to 1160 mm
• Withstand Voltage of Lightning Impulse: from 210 kV to 240 kV
• Withstand Voltage at 50 Hz in Dry Conditions: from 165 kV to 190 kV
• Withstand Voltage at 50 Hz under Rain: from 120 kV to 135 kV
• Discharge Voltage at 50 Hz in Polluted and Humid Conditions: not less than 42 kV
• Rated Specific Surface Conductivity of Pollution Layer: from 10 µS to 30 µS
• Permissible Pollution Degree according to GOST 9920: from II to III, depending on the model

Mounting Dimensions:

• Upper and Lower Flanges: diameter ranges from 76 mm to 225 mm; the number and size of holes vary depending on the model

These insulators are essential components in ensuring the safety and reliability of electrical systems operating at 35 kV, providing effective insulation and mechanical support under various environmental conditions.