Design Change Notice (DCN) for Upgrade Relay Protection for Transformer


Sacramento Municipal Utility District (SMUD)

Project Description
Design Change Notice (DCN) for Upgrade Relay Protection for 230/69kV Transformer for Carmichael Substations

Project Duration
2016- 2017

Project Contract
Subcontractor to Black & Veatch

Scope of Services:

  • Review existing Breaker Failure Control & Relay drawings for Breaker 5890, Hurley Substation, Panel 33 (to be adapted to Carmichael Bank #1 Breaker 5930 Control design).
  • Review SMUD Standard Drawings:  SPAC – STD drawings, applicable to this Project
  • Brief description of Design Process.
  • Device Nameplate schedules (3 Drawings)
  • List of existing cables between Panels and Switchyard Equipment to be removed, and list of new cables to be installed.
  • Documentation listing and identifying existing equipment & devices to be taken out of service and/or replaced disconnected and removed