Polymer support ribbed insulators of type OPK 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 10 kV and frequencies up to 100 Hz. They ensure reliable performance within an ambient temperature range from -60 °C to +50 °C. The insulators are manufactured according to TU 3494-019-82442590-2012 and conform to GOST R 52082.

Key Technical Specifications:

• Rated Voltage: 10 kV
• Rated Ultimate Bending Strength: 8 kN
• Construction Height: 120 mm
• Insulation Height: 112 mm
• Creepage Distance: 220 mm
• Withstand Voltage of Lightning Impulse: 80 kV
• Withstand Voltage at 50 Hz in Dry Conditions: 45 kV
• Withstand Voltage at 50 Hz under Rain: 30 kV
• Discharge Voltage at 50 Hz in Polluted and Humid Conditions: not less than 13 kV
• Rated Specific Surface Conductivity of Pollution Layer: 5 µS
• Permissible Pollution Degree according to GOST 9920: I
• Weight: not more than 0.72 kg