A coordination study ensures protective devices operate selectively, isolating faults with minimal system impact.

Time-current characteristic curves are plotted for every protective device and compared against equipment damage curves. Where two devices overlap, a fault on a single branch trips a main and takes out a plant. Where a device sits above a damage curve, the equipment fails before its protection operates. The study finds both, and the deliverable is a set of settings, not a description of the problem.

Scope

  • TCC curve development
  • Relay setting development
  • Fuse and breaker coordination
  • Identification of miscoordination
  • Optimization for reliability and safety

The other studies