Common use of Xxxxxxxx Substation Clause in Contracts

Xxxxxxxx Substation. As depicted in Figure A-1, the Network Upgrade Facilities at Connecting Transmission Owner’s Xxxxxxxx Substation include the following major electrical and physical equipment: • Replacement of the conductor from the overhead incoming line to disconnect switch 123 (DS123) with 1192 ACSR 45/7 Xxxxxxx conductor (or two (2) 795 MCM cables for ease of installation); • Replacement of the incoming line connections to disconnect switches 13 and 23 (DS13 and DS23) with 1192 ACSR 45/7 Xxxxxxx conductor (or two (2) 795 MCM cables for ease of installation); • Upgrade of the wave traps on Line 2 and Line 12 from 1200A to 1600A, and replacement of the associated coupling capacitors; The system protection modifications at the Xxxxxxxx Substation include: Special Protection Scheme (“SPS”) • Installation of: o An Alstom DIP 5000 relay for the SPS; o Two (2) SEL 351-6 relays (one on breaker R10 and one on breaker R20) to provide the primary SPS input to the DIP 5000; and o Two (2) ERLPhase F-Pro-4000 relays (one on breaker R10 and one on breaker R20) to provide the secondary SPS input to the DIP 5000. SERVICE AGREEMENT NO. 2472 o Modification of the SPS logic at Xxxxxxxx Substation to treat separately the opening of R10 and R20 and the opening of R120 or Alcoa’s Substation’s circuit breaker R8105. Line Reconductoring • Update Line 12 step-distance relay settings.

Xxxxxxxx Substation. As depicted in Figure A-1, the Network Upgrade Facilities at Connecting Transmission Owner’s Xxxxxxxx Substation include the following major electrical and physical equipment: • Replacement of the conductor from the overhead incoming line to disconnect switch 123 (DS123) with 1192 ACSR 45/7 Xxxxxxx conductor (or two (2) 795 MCM cables for ease of installation); • Replacement of the incoming line connections to disconnect switches 13 and 23 (DS13 and DS23) with 1192 ACSR 45/7 Xxxxxxx conductor (or two (2) 795 MCM cables for ease of installation); • Upgrade of the wave traps on Line 2 and Line 12 from 1200A to 1600A, and replacement of the associated coupling capacitors; The system protection modifications at the Xxxxxxxx Substation include: Special Protection Scheme (“SPS”) • Installation of: o An Alstom DIP 5000 relay for the SPS; o Two (2) SEL 351-6 relays (one on breaker R10 and one on breaker R20) to provide the primary SPS input to the DIP 5000; and o Two (2) ERLPhase FXXXXxxxx X-Pro-4000 Xxx-0000 relays (one on breaker R10 and one on breaker R20) to provide the secondary SPS input to the DIP 5000. SERVICE AGREEMENT NO. 2472 o Modification of the SPS logic at Xxxxxxxx Substation to treat separately the opening of R10 and R20 and the opening of R120 or Alcoa’s Substation’s circuit breaker R8105. Line Reconductoring • Update Line 12 step-distance relay settings.