Polymer support insulators of type IORP-10 are designed for insulating and securing current-carrying parts in electrical apparatuses, complete distribution devices, busbars, and substation distribution units operating with alternating current at 50 Hz and voltages up to 10 kV. The climatic version corresponds to UHL 2 according to GOST 15150.

Key Technical Specifications:

• Withstand voltage at 50 Hz in dry conditions (5 min): at least 38 kV
• Withstand lightning impulse voltage in dry conditions: at least 75 kV
• Mechanical strength at normal temperature:
  • bending: at least 6.0 kN
  • tension: at least 8.0 kN
• Residual deflection under load at normal temperature: no more than 0.24 mm

Insulator Designation:

• I — insulator
• O — support
• R — ribbed
• P — polymer
• 10 — nominal voltage, kV
• 03 — serial number
• A — reinforced (hole d1)

The insulators are manufactured according to TU 3494-004-82442590-2008 and comply with GOST 28739.