Common use of ▇▇▇▇▇▇ and Plattsburgh Substation System Upgrade Facilities Clause in Contracts

▇▇▇▇▇▇ and Plattsburgh Substation System Upgrade Facilities. The ▇▇▇▇▇▇ Substation and Plattsburgh Substation SUFs will be constructed as described in this Section II.B. and with respect to the ▇▇▇▇▇▇ Substation, as shown on drawings 070506-EE-1 and 070506-PL-1 attached to this Appendix A as Figures 3 and 4, respectively. The existing MWP-2 line primary protection is a permissive overreaching transfer trip (POTT) system with unblock logic, using a numerical relay in conjunction with audio tone equipment over single side band power line carrier channels. The existing MWP-2 line secondary protection utilizes electromechanical relays to provide backup distance protection. The primary and secondary protection will not essentially change, however the existing breaker failure protection at ▇▇▇▇▇▇ will be modified to trip the ▇▇▇▇ Substation line breakers remotely. To accomplish this scheme two Direct Transfer Trips (DTTs) will be required. The first DTT- 1/MWP-2 equipment required at ▇▇▇▇▇▇ will include: - One FSK PLC Transmitter - One phase C wave Trap - One Phase C Coupling Capacitor Voltage Transformer (CCVT) - One phase C Line Tuner The second DTT-2/MWP-2 equipment will utilize audiotone equipment over the ▇▇▇▇/▇▇▇▇▇▇ microwave communication link described in the Microwave System description.

▇▇▇▇▇▇ and Plattsburgh Substation System Upgrade Facilities. The ▇▇▇▇▇▇ Substation and Plattsburgh Substation SUFs will be constructed as described in this Section II.B. and with respect to the ▇▇▇▇▇▇ Substation, as shown on drawings 070506-EE-1 and 070506-PL-1 attached to this Appendix A as Figures 3 and 4, respectively. The existing MWP-2 line primary protection is a permissive overreaching transfer trip (POTT) system with unblock logic, using a numerical relay in conjunction with audio tone equipment over single side band power line carrier channels. The existing MWP-2 line secondary protection utilizes electromechanical relays to provide backup distance protection. Issued by: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇, Dir. Reg. Affairs Effective: April 2, 2008 Issued on: April 23, 2008 New York Independent System Operator, Inc. FERC Electric Tariff, Original Volume ▇▇. ▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇. ▇▇ Service Agreement No. 1311 The primary and secondary protection will not essentially change, however the existing breaker failure protection at ▇▇▇▇▇▇ will be modified to trip the ▇▇▇▇ Substation line breakers remotely. To accomplish this scheme two Direct Transfer Trips (DTTs) will be required. The first DTT- 1/MWP-2 equipment required at ▇▇▇▇▇▇ will include: - One FSK PLC Transmitter - One phase C wave Trap - One Phase C Coupling Capacitor Voltage Transformer (CCVT) - One phase C Line Tuner The second DTT-2/MWP-2 equipment will utilize audiotone equipment over the ▇▇▇▇/▇▇▇▇▇▇ microwave communication link described in the Microwave System description.