Polymer suspension line insulators type LK 70/110-ID are designed for securing and insulating conductors of alternating current (AC) overhead lines (OL) with a voltage of 110 kV and a frequency up to 100 Hz, operating in 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 3449-005-57966314-2006 and comply with standards GOST 28856, GOST R 55189, and IEC 61109.

Technical Specifications:

• Rated voltage: 110 kV
• Specified mechanical load: 70 kN
• Overall height (H):
  • LK 70/110-ID-2-SP: not more than 1275 mm
  • LK 70/110-ID-3-SP: not more than 1335 mm
  • LK 70/110-ID-4-SP: not more than 1395 mm
• Insulation height (L):
  • LK 70/110-ID-2-SP: at least 1070 mm
  • LK 70/110-ID-3-SP: at least 1130 mm
  • LK 70/110-ID-4-SP: at least 1190 mm
• Creepage distance:
  • LK 70/110-ID-2-SP: at least 2735 mm
  • LK 70/110-ID-3-SP: at least 3165 mm
  • LK 70/110-ID-4-SP: at least 3990 mm
• Withstand voltage:
  • Full lightning impulse:
    • LK 70/110-ID-2-SP: 575 kV
    • LK 70/110-ID-3-SP: 600 kV
    • LK 70/110-ID-4-SP: 610 kV
  • 50 Hz in dry conditions:
    • LK 70/110-ID-2-SP: 370 kV
    • LK 70/