Download 33kv Copper Cables Brochure - Prysmian

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CABLE COMPONENTSPrysmian offers a choice of two standard screen sizesfor different earth fault requirements for EPR andXLPE cables. For systems with small earth fault levels alight duty screen is offered for protection based on thescreens having a nominal short-circuit rating of 3 kA forone second. For systems with high fault levels, a heavydutyscreen is available with a nominal short-circuitrating of 10 kA for one second.i.) Light-duty Screened Cables are for use in circuitsprotected by fast acting devices such as HRC fuses orsystems having low I 2 t earth fault values.ii.) Heavy-duty Screened Cables are designed to carryhigh earth fault currents comparable with systemsymmetrical fault currents. They are designed for supplysystems having high I 2 t earth fault values.For three core cables, one third of the required screeningis nominated for each core, the fault current beingassumed to be shared by all screens. The one-secondearth fault current ratings are given in the data sheetsfor each of the medium voltage XLPE and EPR cables.faced by Utilities and Contractors in power distribution.The company provides a cable design service capableof servicing your requirements for power cablespecification. Prysmian innovation has led to newproducts including:• New concepts for protection of cable from termitesbacked by sponsored CSIRO research.• Alternative solutions to armour for protection of cablesfrom impact damage.• EPR COMPACT medium voltage cables have beendeveloped for cost-effective replacement of networksusing existing ductwork. These cables have beendesigned to optimise electrical and mechanicalproperties in dimensionally smaller cables. This hasbeen accomplished through use of the EPRotenaxPremium Performance insulation system, whichcombines maximum current carrying capacity with arugged outer sheath and sufficient insulation thicknessto deliver the same reliable service as the paper cablesbeing replaced.These standard screens can be varied to suit individualsystem fault requirements. Prysmian has manyalternative solutions to meet the demanding problemsPrysmian can also advise on various tree-retardantinsulations and water blocking options.5
CABLE COMPONENTSDESIGNATIONSEach cable type is identified by a reference typedesignation for ease of reference and a full orderdesignation which fully identifies each cable and shouldbe used on order documentation. Cables are metremarked for ease of installation and inventory control.All cables are listed with the voltage rating for which thecable is designed, expressed in the form Uo/U, where Uois the nominal voltage between conductor(s) and earthand U is the nominal voltage between phase conductors.RECOMMENDED USEThe cables described in this technical manual aredesigned to be used for the supply of electrical energy infixed installations up to the indicated rated voltage at anominal power frequency in the range 49Hz to 61Hz.Cables to AS/NZS 1429.1 and AS/NZS 4026 areintended for use either installed in air, directly buriedin the ground or in ducts. Cables with LSOH sheathhave improved fire performance when installed inair and are primarily intended for such locations.Reasonable protection against mechanical damageshould be provided.Cables in this technical manual are not specificallydesigned for use as self-supporting aerial cables, assubmarine cables, where exposure to excessive heator corrosive products or solvent substances is involved.In case of any doubt concerning the suitability of aparticular cable type for a particular use, guidanceshould be sought from Prysmian’s CustomerService Centre.6
Page 1 and 2: Medium VoltageYOUR ENERGY, OUR SYST
Page 3: Cable ComponentsTHIS MANUAL CONTAIN
Page 7 and 8: Product CodesConductor Nominal Cros
Page 10 and 11: Exploded Cable ViewSINGLE COREStrad
Page 12 and 13: MEDIUM VOLTAGE CABLESCopper19/33kVP
Page 24 and 25: TECHNICAL INFORMATIONEXPOSURE TO ME
Page 26 and 27: TECHNICAL INFORMATIONCURRENT RATING
Page 28 and 29: TECHNICAL INFORMATIONMAXIMUM SIDEWA
Page 30 and 31: TECHNICAL INFORMATIONTechnical Info
Page 32 and 33: TECHNICAL INFORMATION3. Cables inst
Page 34 and 35: Notes143

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