Mumbai, March 2 (IANS): Larsen and Toubro (L&T) has commissioned country's first 765 KV Gas Insulated Substation (GIS) in Pune in an agreement with a Korean firm and executed 765 KV transmission line in Air Insulated Substation in Rajasthan.

The project in Pune is part of the transmission system associated with the Krishnapatinam UMPP (ultra mega power project) to strengthen the grid connectivity as well as strengthen power distribution of 400 KV in western India, a company statement said on Monday.

"It is the first GIS sub-station with one-and-a-half circuit breaker scheme in India. It possesses 3,449 m of Gas Insulated Bus Ducts in a single substation.

"For the first time, pre-fabricated steel buildings were used for speeding up the construction process. The order was delivered in 14 months - much ahead of the schedule," it added.

The company said its second completed project of 765 KV in Rajasthan is the largest in the state and will act as an interface for the national grid connection to the power grid substations in Gwalior and Bhiwani.

"The 765 KV transmission line built between Baran and Jaipur (both in Rajashtan) for the Rajasthan Rajya Vidhyut Prasaran Nigam Ltd is not only the first in the state but also the first transmission line stretched across 213 km on a single circuit line."