Berry Street Substation Berry Street Substation, Plainville, MA New 115-345kV Substation New station in Plainville, MA comprised of a 345kV switchyard, 115kV switchyard and a 345/115kV autotransformer with a new control house. The existing 345kV (303 and 315 lines) and 115kV (D-182S and C-181N lines) loop in and out. This project scope of work included the following: 345/115/24kV auto-transformer. ¦ (2) 345kV bays with (3) breakers in one bay ini

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