SynchroGrid was involved in review and quality control of a 345kV line protection for SEL-421 and SEL-411L along with breaker control and interface relays.

Further services included:

  • Review of entire SEL RDB settings and logic
  • Verification of inputs and outputs using drawings
  • Review of relay coordination using ASPEN software
  • Coordination of distance settings Zone 1, 2, 3, and 4
  • Coordination of ground and phase overcurrent settings
  • Finalized report with corrective actions

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