The 3M conductor is being installed in place of existing ACSR conductors, without the need to construct new transmission towers, as the right of way available was inadequate. The lightweight, sag-resistant overhead conductor can carry twice the amount of electricity compared with conventional steel conductors of the same diameter.
This deployment adds India to the list of countries in which 3M ACCR is being used to boost transmission capacity in either densely developed or environmentally sensitive areas. The conductor allows major capacity increases while avoiding the costs and disruptive effects of tower construction or acquiring additional rights of way. Some of the other countries in which 3M ACCR is in use are the U.S., Canada, Brazil and the People's Republic of China.
The Borivali-Malad and Salsette-Saki line upgrades will require a total of 200 km/125 miles of conductor to cover circuits of 8 km of each line, making this the largest single application of 3M ACCR to date. Installation of the Borivali-Malad circuits is complete. Installation on Salsette-Saki is planned in the near future.
3M ACCR was developed with the support of the U.S. Department of Energy, which tested the conductor at Oak Ridge National Laboratory (ORNL) in Tennessee, and with early contributions by the Defense Advanced Research Projects Agency.