Supporting tension chain

The re-insulation of an existing overhead line to a higher voltage requires an extensive planning approval procedure. This is because the re-insulation is not feasible for many mast geometries while maintaining the spacing between the conductor cable and the mast crossarm below. In addition, there are mechanical requirements for tensile loads, sag and deflection in wind, as well as ice load. With the use of an insulated suspension chain, re-insulation is possible while maintaining the same suspension point (NISV) and ground clearance, as well as unchanged mast statics. Poles with small horizontal and vertical distances cannot be insulated with standard chains.

  • No mast adjustments necessary
  • Conversion in compliance with the NISV (no change to the suspension point)
  • Lightning, rain and AC-tested (with U50 test)

Your advantages: Benefit from our know-how

  1. Efficient voltage increase from 50 to 110 kV while retaining the previous mast geometry
  2. High security of supply, in the future as well
  3. Economical solution for compact conversion of high-voltage overhead lines
Learn more in our video

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We also provide consulting services.