Overspeed bolt replacement

ABB can increase turbine safety and reduce operational and maintenance costs by upgrading the overspeed protection system from a mechanical bolt arrangement to a more reliable electronic solution. There are significant advantages to using an electronic overspeed protection system rather than mechanical overspeed protection.  Modern electronic overspeed protection systems include speed monitoring, turbine trip manifolds, and the electronic control system.

Why ABB?
ABB's automated solution eliminates the cost associated with testing and maintaining existing mechanical trip systems.  The new electronic overspeed protection system with two-out-of-three architecture provides increased reliability and a means for on-line testing.

  • Reliable and safe protection system
  • Ability to test each speed channel independently while on-line
  • Triple redundant trip manifold with on-line testing capability



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