Cable Corporation of India Ltd manufactures Underground Extra High Voltage-EHV Cables. Cable Corporation of India Ltd is an ISO 9001 certified organization. The Underground Extra High Voltage-EHV Cables under the trade name Tropothen-S are also used for evacuating bulk power generated in pumped storage hydroelectric power generating stations, situated at a lower altitude, at outdoor switchyard located at a higher altitude. Similarly, underground cable systems are the appropriate means of power transmission over short distances where erection of overhead tower lines would be infeasible considering the space constraints. The distinct advantages in achieving low transmission losses when such cable systems are operated at higher voltages for bulk power transfer are well-known.
