NOTICE DATE:  February 25, 2009
NOTICE TYPE:  M-B022509-01 Operations
SHORT DESCRIPTION:  Sandow Switching Station SPS Proposal
INTENDED AUDIENCE:  ERCOT Market Participants
DAY AFFECTED:  Proposed April 10, 2009
LONG DESCRIPTION:  ERCOT has received a proposal from Oncor Electric Delivery for a new Special Protection System (SPS) at Sandow Switching Station.  This SPS is intended to protect against post-contingency overloading on the Sandow - Taylor, Sandow - Elgin, and Elgin - Gilleland 138 kV Lines and the Sandow 345/138 kV Autotransformer that may occur under various conditions with the addition of Sandow unit # 5.

ERCOT is initiating a review of this Type-1 SPS at this time.  Information regarding SPSs can be viewed on the ERCOT Planning and Operations Information secure website:  http://planning.ercot.com/login/login.

CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via e-mail at [log in to unmask]<mailto:[log in to unmask]>.
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sg