Russian utility installs 3M ACCR to upgrade key transmission line

St. Paul, Minn., January 18, 2012 — The electricity transmission unit of Moscow United Electric Grid Co. has installed the 3M ACCR overhead conductor to upgrade a line serving a densely populated southern district of Moscow to avoid the need for larger towers or an expanded right of way.

The installation is the second application of 3M ACCR by MOESK in Moscow, and the eighth across the country to date by a Russian utility, with three more soon to be completed.

MOESK Co. is Russia's largest interregional distribution grid company, serving a 18,147-square-mile area with a population of about 17 million.

The utility chose 3M ACCR to achieve up to 1,200 amperes of current on a 2.05-mile 110 kV double-circuit overhead segment of its Cheremushki-Yughnaya line, serving the Nagatino-Sadovniki portion of Moscow's Southern Administrative District.

The alternative solution would have been to enlarge the towers to support a 220 kV or 330 kV upgrade, causing difficult logistical problems in the densely packed community. Among other impediments, the line crosses six-lane and eight-lane highways, as well as railroad tracks.

3M ACCR is a lightweight, low-sag, high-capacity conductor that can carry twice the current or more of conventional steel-core conductors of the same diameter, on existing towers, thereby helping utilities avoid a wide range of problems in environmentally sensitive areas and in crowded urban settings. Its low-sag characteristic also provides a solution for clearance issues.

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