About Sikkim Power Transmission Ltd.

Sikkim Power Transmission Ltd. is a Joint Venture of Sikkim Urja Ltd. (SUL) and Power Grid Corporation of India Ltd. (PGCIL - A Govt. of India Enterprise). SUL holds 69.08 % equity shares of SPTL while PGCIL holds 30.92 %. The Company was incorporated on 10th August, 2006.

The entire 400 kV Transmission Line from 1200 MW Teesta-III HEP to Kishanganj of 215 Kms along with the 2 Nos. of associated bays and 2 Nos. of reactor are into commercial operations. The Project of the Company has achieved its Commercial Operation Date (COD) on 13th February, 2019.

Services Offered

With its pool of knowledge based professionals, Sikkim Power Transmission Ltd. has the capability to carry out complete array of activities in Engineering and Management of transmission.

Sikkim Power Transmission Ltd. possess latest Software and vast Engineering Data Bank with Technical Library for referring critical Engineering aspects and Engineering studies and takes total responsibility till satisfactory completion of the assignment.

•     Preparation of Technical specification for Preliminary survey.
•     Preliminary Survey and preparation of preliminary bill of quantity of towers.
•     Preparation of Technical Specification for Detailed Survey & Soil investigation.
•     Detailed Survey & Soil investigation.
•     Preparation of Final bill of quantity of towers.
•     Substation Design
•     Preparation of Technical Specification for
      a)     Tower Package
      b)     Conductor Package
      c)     Insulator Package
      d)     Hardware Package
      e)     Earthwire Package
•     Evaluation of Technical & financial Bid for
      a)     Tower Package
      b)     Conductor Package
      c)     Insulator Package
      d)     Hardware Package
      e)     Earthwire Package

•     Check survey, contour survey.
•     Tower Leg Extensions & Body Extensions.
•     Tower Foundation Design.
•     Tower Design & Testing
•     Detailed design & Engineering
•     Quality Assurance & Inspection of all the packages.
•     Testing, Commissioning & Energisation.

•     Design & Engineering
•     Owners Engineer
•     Project Management Services
•     Construction Management Services
•     Commissioning and Startup Services

Team

Team shall be the best talents available with Sikkim Power Transmission Ltd..

The company employs professionals (engineering, commercial, graduates & post graduates). The engineering team possesses an average experience of more than 20-25 years.

Engineering & Construction Excellence

Sikkim Power Transmission Ltd. in association with its engineering consultant, has successfully developed and type tested 3 types of towers for 400kV quadruple moose transmission line for altitude more than 1000m above mean sea level, which is first of its kind in the country.

SPTL has successfully type tested 420kV voltage class long road composite insulators withstanding lighting impulse voltage level of 1821kV & switching impulse voltage level of 1234kV to fulfill insulation level for maximum altitude of 2300m above mean sea level, which is first of its kind in the country.

The Company has installed towers for 400kV quadruple moose transmission line with 6m differential & with provision of 9m chimney extension making total height difference of 15m between two legs of tower for altitude of more tha 1000m above sea level, which is first of its kind in the country.