EMCO Transmission lines division provides EPC solutions from concept to commissioning of EHV Transmission line packages up to 765 kV AC / +-800 kV HVDC on turnkey basis.
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Features
- Engineering, Designing, Testing, Manufacturing and Execution of Transmission line towers upto 765 kV AC /+-800 kV HVDC with different conductor configuration and geometry.
- Well equipped with special T&P, Erection tools and highly skilled erection team to execute transmission lines upto
765 kV AC /+-800 kV HVDC.
- Successfully executed transmission lines of more than 1100CKMs upto 400 kV AC and completed more than 600CKMs of 765 kV AC.
- We have more than 10 sets of European make Tension Stringing Equipment (TSE) of 16MT.
- We are executing 240 kms of +-800 kV HVDC Transmission Lines and 370 km of 400 kV AC Transmission Line for PGCIL.
- We are also executing more than 300kms of 400 kV AC transmission lines for other utilities.
- Own experienced team for OPGW stringing with special tools.
- Well experienced for execution of lines passing through hilly terrain, forest and rivers.
Towers Manufacturing Facility at Vadodara
- Fully automated state of the art fabrication facilities having installed capacity of 45000 MTPA.
- Fabricated, galvanized and supplied more than 63,000 MT of 400 kV / 765 kV AC Transmission Line Towers in last 3 years.
- In-house facilities for conducting Routine & Acceptance Test in accordance with relevant standards for Transmission line Towers.
- Approval of more than 80 nos. Prototype Towers for 400 kV / 765 kV AC / +-800 kV in record time.
- Exporting Towers to Middle East and Africa.
- Locational advantage allow pollution free fuel for galvanizing thereby resulting in improved quality.
Transmission lines with in-house facility to manufacture Transmission Towers
Process
Fabrication:
Process of fabrication comprises of cutting, stamping, straightening, punching, notching, bending & heel grinding. Then it is ready for galvanizing.
Galvanizing:
- Degreasing of tower parts with Sodium Hydroxide solution.
- Pickling to clean up the surface with HCL Solution.
- Rinsing twice with fresh water to remove the acid content.
- Fluxing with synth flux to prepare surface for galvanizing
- Drying on hot plate.
- Dipping in Zinc bath with 99.95% pure zinc at 4500C to 4650C temperature.
- Quenching in water.
- Dichromating.
- The Galvanizing thickness is normally 460 gms per sq.meter for members below 5 mm thickness and 610 gms per sq.metre for members above 5 mm thickness.
With this, the finished tower parts get ready for dispatch to sites.
Testing of Towers:
Transmission Tower is the only structure in structural industry, which is tested as per actual ultimate loading carried out on test beds as per IS:802 Part-III (latest edition) We have designed and type tested 39 towers for different applications in 66 kV to 400 kV networks which are in service in different parts of the country.
Design of Foundation
Design of foundation is an allied area to tower design. Designing of Tower Foundation is also a very important aspect in Total Turnkey Projects. With our most competitive and economical designs, we are able to win the contracts against stiff market competition. We have designed R.C.C. and P.C.C. type foundations depending on the soil conditions. We have also designed foundations for special applications like River Crossing Towers.
Supply chain management (SCM)
EMCO has developed a very wide vendor base for sourcing raw material for Tower Fabrication, Conductors, Insulators, earth wires and hardware for Transmission Line of all ratings. Consistent quality and timely execution are given maximum importance.
Construction of Transmission Line :
Construction, Erection and Installation of Transmission Lines is also one of our core competency areas. We provide complete solution for Transmission Line Projects. We also have rich experience and expertise of having carried out construction of 66kV to 765 kV Transmission Lines in all types of terrains. We are equipped with requisite sets of Tension stringing Equipment required for stringing of 765 kV Transmission Lines.
