Marine cable

Wires & Cables www.siechem.com 1. Advantage of XLPO over PVC & XLPE ; Generally XLPO material is recommended for Marine cables because of enhanced operating temperature and hostile 0 0 0 weathering conditions. XLPO EBXL cable is rated for 120 C and Silicon 155 C continuous operating temperature, whereas XLPE cable is rated for 90 C only. 2. Choice of Tin coated copper or Tinned annealed copper: Annealing is compulsory to get lower resistivity and better flexibility. Tinned copper is what specified in specification for EBXL Marine cables. 3. Short circuit temperature : PVC : 150°C, XLPE : 250°C and and XLPO/Silicon : 280°C 4. Bending radius of cables: Normally it is 3 to 4 times the cable OD in flexible cables for EBXL XLPO/Silicon as against 9 times of XLPE / PVC. 5. Insulation material: PVC & XLPE insulations are common in Power Cables, whereas EBXL XLPO/Silicon material is used in Marine and Special application cables to keep the Electrical and Mechanical properties of the cables in elevated environmental temperature. 6. Insulation & Sheath color : Insulation is normally Red & Black and Sheath is Black. However, inner layer i.e. insulation color can be as per customer order . 0 7. Ampacity of cables. It is about 30% more than 90 C rated XLPE and about 43% more than PVC. Please also refer point no.19. In case of Silicon cores, it is even more. 8. Rated Voltage: 600/1000V AC or as per Customer order. 9. In class 2 conductors for Cables of fixed installations, minimum no. of strands are specified whereas in flexible conductors maximum wire diameter of individual wire is specified, which falls in Class 5 Category. Both class 2 and 5 are permitted to be used, but that depends on how critical it is in certain areas while installing the cables, especially in cold climate areas. 10. Cable preferred for fixed use: Armoured power, control and communication cables. 11. Weight of cable preferred: Please refer our leaflets for Cable Dimensions and Weight. 12. Stranded or Solid conductor - which is preferred? : Solid copper conductors are specified upto 6 Sq.mm and stranded conductor is used for sizes greater than 6 Sq.mm. No change in conductor fabrication for Marine or other cables. 13. Flexibility: More in flexible conductors, class 5 & class 6, and it is less in stranded class 2 conductors for fixed installations and least in Solid class 1 conductors for fixed installations. Flexibility is customer specific. 14. Halogen free: Special cables for commercial places, locomotives, marine applications, aircraft wiring, Marine Cables etc. It has no Toxic emissions. 15. Submersible in water or not: XLPO/Silicone Marine cables are generally weather resistant and very good for water resistant applications. Hence, XLPO/ Silicon Marine Cables ideally meet Marine Cable needs at hostile conditions. 16. Electron beam cross linked procedure or CV curing process preferred?: Electron Beam Cross Linked is the superior way of curing the material which gives uniform enhanced Electrical, Thermal and Mechanical properties across the cable built. No bye products are produced which are harmful to the insulation layer unlike in Chemical curing. EBXL is environment friendly and very reliable. 17. Various tests: a) conductor resistance, (b) voltage test on complete wire, (c) insulation continuity test, (d) Surface resistance sheath test, (e) Insulation resistance test: All test are carried out as per the relevant specifications. These are basic tests. But if you refer IEC, you will find very interesting tests are specified for 25 years life under severe working conditions. Siechem has 100% in house testing facility which can be witnessed by customer. 0 0 18. Recommended ambient temperature to be considered for Marine application: As specified in International Specifically, PVC cables can withstand 70 C, XLPE for 90 C 0 0 and XLPO 120 C and Silicon for 155 C. As the Cable is the main nerve system in marine installations, if proper cable is not installed, voltage drop, efficiency and system failure cannot be prevented. FAQ : Why Siechem EBXL XLPO Cables for Marine Application? 19