Aluminum 132kv Ehv Cable

Product Details

The conductor shall be formed from plain copper or aluminum, Basically of 2 types, compacted circular and segmental compacted circular. Conductor above 1000 mm2 cross section shall be segmental (Milliken) conductoConductor screening of an extruded semiconducting XLPE compound shall be applied over the conductor. One or two layers of semiconducting tape(s) may be applied with suitable overlap between the conductor and the extruded semiconducting layerThe insulation shall be of dry – cured super clean XLPE compound with suitable thickness to meet dimensional, electrical and physical requirements. The insulation shall be suitable for operation in wet or dry locations at conductor temperature not exceeding 900C for normal condition, 1300C for emergency overload conditions and 2500C for short circuit conditionWhen a layer of copper wire screen is required, it shall be applied over the insulation screening. One or more layers of suitable separator / binder tape may be applied helically over the screen asWhen a layer of copper ead Alloy Sheath is very effective radial water barrier and is applied by a continuous screw extrusion, as a seamless sheath with smooth surface, free from pinholes and any other imperfections including one associated with oxide inclusions. The lead sheath offers very good chemical resistance. The lead sheath can act as metallic screen as well as radial moisture barrier. Additional cooper wire screen may be required some times to augment fault current carrying capacity.wire screen is required, it shall be applied over the insulation screening. One or more layers of suitable separator / binder tape may be applied helically over the screen as applicableCorrugated Aluminum Sheath Corrugated aluminum sheath also acts as metallic screen and radial moisture barrier. The corrugated aluminium sheath offers good mechanical protection and avoids need of any additional armoring. Suitable corrosion protection is applied over the sheath for protection from corrosion..  Poly-Al Laminate sheath is yet another moisture barrier other than lead sheath and corrugated aluminum sheath. This is an aluminum tape with PE lamination on both sides. It is applied longitudinally with overlap and its PE laminations get bonded with overlying PE sheath and form a sheath of aluminum for radial moisture protection. Since the thickness of aluminum tape is very low in this sheath, additional copper wire screening is required for carrying earth fault curre Water swellable tapes are used in cables to prevent longitudinal water penetration along the cable – between core and metallic sheath. Longitudinal water tightness can also offered along the conductor by use of water tight conductor as per requirement.The outer jacket shall consist of thermoplastic compound (PVC, PE or similar materials) extruded continuously over the metallic layer or moisture barrier. A conductive layer is also applied over outer jacket to facilitate voltage testing of jacket to check its integrity.PECIAL FEATURES OF EHV XLPE MANUFACTURING LINE : • Highly sophisticated Dry Cure Dry Cool (DCDC)  Triple Extrusion process • Unique CCV Line equipped EHT system for perfect concentricity • Computerized vulcanizing & cooling systems as well as extruder heating control system • In – line metal detectors for Semicon & XLPE materials which ensure removal of ferrous                 & non – ferrous metallic Impurities from compound before extrusion • In – line fine dust separator for XLPE insulation to have homogenous & extra clean insulation • Separate pressurized rooms for Semicon screening & X