Polymer suspension line insulators type LK 120/110-ID are designed for securing and insulating conductors of overhead transmission lines (OL) and switchgear (SG) of power plants and substations for alternating current with a voltage of 110 kV and a frequency up to 100 Hz. They ensure reliable operation at ambient temperatures ranging from -60 °C to +50 °C. The climatic version and placement category correspond to UHL 1 according to GOST 15150. The insulators are manufactured according to TU 3494-016-82442590-2011 and comply with standards GOST 28856, GOST R 55189, and IEC 61109.

Technical Specifications:

• Rated voltage: 110 kV
• Specified mechanical load: 120 kN
• Overall height (H):
  • LK 120/110-ID-2-SP: not more than 1280 mm
  • LK 120/110-ID-3-SP: not more than 1340 mm
  • LK 120/110-ID-4-SP: not more than 1400 mm
• Insulation height (L):
  • LK 120/110-ID-2-SP: at least 1070 mm
  • LK 120/110-ID-3-SP: at least 1130 mm
  • LK 120/110-ID-4-SP: at least 1190 mm
• Creepage distance:
  • LK 120/110-ID-2-SP: at least 2735 mm
  • LK 120/110-ID-3-SP: at least 3165 mm
  • LK 120/110-ID-4-SP: at least 3990 mm
• Withstand voltage:
  • Full lightning impulse:
    • LK 120/110-ID-2-SP: 585 kV
    • LK 120/110-ID-3-SP: 600 kV