NOTICE DATE:  December 04, 2008

NOTICE TYPE:  M-A112008-02 Operations

SHORT DESCRIPTION: ERCOT ISO Cancellation of the Sandow Switch SPS

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED: Operating Day December 02, 2008

LONG DESCRIPTION:  Due to current operating conditions ERCOT is canceling the provisional approval of this Special Protection System (SPS) and returning the Sandow substation to it’s prior configuration.

The ERCOT ISO had granted provisional approval of Oncor Electric Delivery SPS at the Sandow Switch substation which initiates a safe shut down of Sandow Unit 4 upon detection of the loss of the Sandow Switch 345/138 kV Autotransformer, and as of 13:42 on December 02, 2008 the SPS has been disabled.

The list of active SPS will be updated and the Sandow SPS removed. The list of active SPS can be viewed on the ERCOT Operations and planning 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 Relations via e-mail at [log in to unmask].

If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

 

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