Subject of Procurement

• To be procured: Glass disc insulators intended for 400–110 kV overhead lines.
• Main technical requirements, specifics:
  • Minimum breaking mechanical load: from 70 kN to 210 kN (depending on the class).
  • Creepage distance: from 303±14 mm to 370±16 mm.
  • Weight: from 3.8 kg to 7.8 kg.
  • Diameter: from 255±14 mm to 280±13 mm.
  • Lightning impulse withstand voltage (1.2/50µs): per insulator ≥100 kV, 5-unit insulator string…
     
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