Polymer suspension line insulators type LK 70/150-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 150 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: 150 kV
• Specified mechanical load: 70 kN
• Overall height (H):
  • LK 70/150-ID-2-SP: not more than 1575 mm
  • LK 70/150-ID-3-SP: not more than 1695 mm
  • LK 70/150-ID-4-SP: not more than 1815 mm
• Insulation height (L):
  • LK 70/150-ID-2-SP: at least 1370 mm
  • LK 70/150-ID-3-SP: at least 1490 mm
  • LK 70/150-ID-4-SP: at least 1610 mm
• Creepage distance:
  • LK 70/150-ID-2-SP: at least 3460 mm
  • LK 70/150-ID-3-SP: at least 4235 mm
  • LK 70/150-ID-4-SP: at least 5350 mm
• Withstand voltage:
  • Full lightning impulse:
    • LK 70/150-ID-2-SP: 750 kV
    • LK 70/150-ID-3-SP: 775 kV