Common use of Upgrading Line Protection Systems at Xxxxxx Road 345kV Clause in Contracts

Upgrading Line Protection Systems at Xxxxxx Road 345kV. The Transmission Developer will upgrade the existing Xxxxxx Road-NGRID Five Mile (Line 29) line protection systems at the 345 xX Xxxxxx Road Substation. This work will include the following major protection and control equipment at the Xxxxxx to East Xxxxxx line terminal: Replace existing system A line relay (SEL-421) with one (1) SEL-411L system A line protection relay utilizing a line differential protection scheme; Replace existing system B line relay (Siemens SIPROTEC) with one (1) GE-L90 system 2 line protection relay utilizing a line differential protection scheme; Twelve (12) FT-1 test switches; Remove existing line trap and line tuner; Remove existing System A RFL 9785 and RFL 9780 powerline carrier system devices; Remove existing System B RFL GARD 8000 device and disconnect the existing System B relay communications (JMUX over leased line); Install two (2) distinct fiber optic cables for the new line differential protection between Xxxxxx Xx and East Xxxxxx Xx; Optical ground wire (“OPGW”) will be used for system A and all-dielectric self-supporting (“ADSS”) routed underground will be used for system B; and Install two (2) fiber patch panels to terminate the two distinct fiber cables required for the new System A and System B relaying.

Upgrading Line Protection Systems at Xxxxxx Road 345kV. The Transmission Developer will upgrade the existing Xxxxxx Road-NGRID Five Mile (Line 29) line protection systems at the 345 xX Xxxxxx Road Substation. This work will include the following major protection and control equipment at the Xxxxxx to East Xxxxxx line terminal:  Replace existing system A line relay (SEL-421) with one (1) SEL-411L system A line protection relay utilizing a line differential protection scheme;  Replace existing system B line relay (Siemens SIPROTEC) with one (1) GE-L90 system 2 line protection relay utilizing a line differential protection scheme;  Twelve (12) FT-1 test switches;  Remove existing line trap and line tuner;  Remove existing System A RFL 9785 and RFL 9780 powerline carrier system devices;  Remove existing System B RFL GARD 8000 device and disconnect the existing System B relay communications (JMUX over leased line);  Install two (2) distinct fiber optic cables for the new line differential protection between Xxxxxx Xx and East Xxxxxx Xx;  Optical ground wire (“OPGW”) will be used for system A and all-dielectric self-self- supporting (“ADSS”) routed underground will be used for system B; and  Install two (2) fiber patch panels to terminate the two distinct fiber cables required for the new System A and System B relaying.