Marine cable

Wires & Cables www.siechem.com 0 19. De-rating factor: As per IEC specification. Also as per IEC216, if the cable is over loaded, for 8 C increase over the rated temperature, the cable life is 0 reduced to 50%. If the temperature rise is more than 8 C, proportionately insulation resistance of cable weakens and thus the premature failure of cable occurs. 20. Non standard cable size: Siechem is specialized in making any cable size as per customer requirement from 0.25 to 1000 Sq mm. 0 21. EBXL XLPO Marine cable life: 25 years minimum or 20,000 hours continuously at rated temperature, i.e. -65 to + 120 C. Hence, reliable under severe and hostile operating conditions 22. Cost : Marginally high due to E-beam cross linking and better insulation and sheathing material used for 25 years guaranteed life. Since copper dominates nearly 90% 0 of weight in case of higher size cables, the gap between ordinary 90°C XLPE cables and XLPO 120 C rated will be very little. But, performance is 30% more than conventional cables. Therefore, EBXL XLPO is more economical in a long run. 23. Where EBXL XLPO is used: In USA, Europe and in India. Most of the Marine customers go in for this technology. 24. Reference standards : IEC - 60092, American Bureau of Shipping, Lloyds Register, Defence etc. Siechem makes cables as per the specification. 25. Design & cable size: This is the key area. It is up to the Engineering Team who smartly design the cable route and sizes. Siechem can supply any cable size that meets that particular conditions. Temperature Rating At 40°C ambient, if the load is 80% of the rated cable size for e.g.120Sq.mm copper cable, the temperature of the conductor and current will be At 55°C ambient, if the load is 80% of the rated cable size the temperature of the conductor will be Current loading @ 80% of the cable capacity Same size conductor i.e.120Sq.mm if it is 100% loaded over the cable capacity (43% more in case of EBXL XLPO Vs PVC or PVC FRLS cables) XLPO (EBXL) PVC 0 70 C 0 56 C 244A 0 71 C 100% 305A 0 90 C 0 72 C 267A 0 87 C 97% 336A XLPE (EBXL) 0 120 C 0 96 C 350A 0 111 C 92% 437A Compound 20