YOUR ENERGY, OUR SYSTEMS, ANYWHERE. Flexible Cables

Transcription

1 YOUR ENERGY, OUR SYSTEMS, ANYWHERE Flexible Cables 2010

2 FLEXIBLE CABLES PRYSMIAN TECHNICAL MANUALS COMMUNICATION CONSTRUCTION DATA & INSTRUMENTATION FIBRE TO THE PREMISES FIRE PERFORMANCE FLEXIBLE CABLES MEDIUM VOLTAGE MINING & INDUSTRIAL OVERHEAD CONDUCTORS

3 CONTENTS Page No. INTRODUCTION 02 CABLE USAGE CHARACTERISTICS 03 PVC Light Duty Flexible Cord 04 Ordinary Duty Flexible Cord 06 Heavy Duty Flexible Cord 08 Welding Flex 10 FLEXTREME Single Core Cable 12 Multicore Cable 14 Multicore Control Cable 16 Multicore Screened Cable 18 Cable Selection 20 General Information 25 01

4 INTRODUCTION Prysmian Cables & Systems manufacture a wide range of flexible cables for domestic, coercial and industrial use. Prysmian's flexible cables range falls into two categories, PVC insulated and sheathed cables for use in applications exposed to little or no mechanical stress and elastomeric insulated and sheathed cables for use in industrial or more aggressive environments. PVC cables are subdivided into light, ordinary and heavy duty requirements for domestic and light coercial use. Prysmian s range of Flextreme elastomeric cables have been developed to optimise cable choice and reduce cost by providing a cable that suits a variety of conditions. Four key areas are addressed with Prysmian's Flextreme Cable: Extreme flexibility with superior bending radii and able to withstand continuous cycling duties. Applications include cranes, mobile equipment, robotics, materials handling, industrial trucks, rotating or vibrating equipment, compressors, generators, building sites, theatres, entertainment halls etc. Extreme resistance to mechanical shocks, temperature and hostile environments such as building sites, workshops, chemical plants, production facilities etc. Extreme water tightness suitable for permanent submersion to 100m in applications such as dams, ports, submersible pumps, swiing pools, golf courses, sewage works, water treatment plants, gardens etc. Extreme versatility with one range of cables suitable for a variety of applications. All of these qualities lead to increased security and peace of mind and Prysmian's cables are subject to stringent testing and quality control, ensuring the highest possible standards. MATERIALS INFORMATION CONDUCTORS All conductors are annealed copper, complying to AS/NZS INSULATION PVC cables Flexible cables are insulated with V-90 PVC Welding cables are insulated with V-90HT PVC Flextreme elastomeric cables Flextreme cables are insulated with an R-EP-90 cross-linked elastomer SCREENS Where provided, screens are manufactured from tinned annealed copper in a close woven braid. SHEATHS PVC cables Flexible cables are sheathed with 5V-90 PVC Welding Flex is sheathed with V-90HT PVC Flextreme elastomeric cables All Flextreme cables are sheathed with a HD-90-CPE heavy duty cross linked elastomer 02

5 CABLE USAGE CHARACTERISTICS LAYING CONDITIONS AMBIENT TEMPERATURE Maximum operating temperature Minimum operating temperature MINIMUM BENDING RADIUS Minimum bending radius of installed cables MINIMUM BENDING RADIUS DURING INSTALLATION MINIMUM INSTALLATION TEMPERATURE MECHANICAL IMPACT RESISTANCE 1 Light impact 2 Moderate impact 3 Heavy impact 4 Very heavy impact RESISTANCE TO SOLAR RADIATION AND WEATHER Excellent Permanent Very good Frequent Good Occasional Acceptable Accidental Poor None IN TRENCH IN GROUND IN FREE AIR IN GROUND WITH PROTECTION RESISTANCE TO WATER Negligible Water drops Spray Splashes Heavy sea Iersion Submersion No humidity Occasional condensation Water run off Exposed to water splashes Exposed to waves Temporarily covered by water Permanently covered by water IN DUCT IN CONDUIT CHEMICAL RESISTANCE Excellent Very good Good Acceptable Poor BEHAVIOUR IN FLAME AND FIRE Reaction To Fire C1 Fire retardant C2 Flame retardant C3 No fire performance LOW SMOKE EMISSION AS/NZS 4507 Permanent Frequent Occasional Accidental None Resistant To Fire Level 1 Ultimate fire survival Level 2 Two hours fire survival Level 3 Restrained spread & self extinguishing DOMESTIC APPLIANCES MACHINES MOBILE EQUIPEMENT OUTDOOR APPLIANCES FESTOON INTERNAL WIRING FLEXIBILITY Rigid Semi-rigid Flexible Very flexible SUBMERGED INDUSTRIAL EQUIPEMENT HALOGEN FREE AS/NZS 4507 OVERHEAD AERIAL EXTERNAL BUILDING In accordance with research, new material developments and changes in relevant standards, published details may change without notice. 03

6 PVC LIGHT DUTY 250/250V LIGHT DUTY FLEXIBLE CORD TO AS/NZS 3191 CABLE DESIGN CONDUCTOR: Annealed copper conductor to AS/NZS 1125 Maximum continuous operating temperature: 75 C INSULATION: V-90 PVC Colours: 2C Brown, Light Blue 3C Brown, Light Blue, Green/Yellow SHEATH: 5V-90 PVC Colours: Grey, White, Black, Orange INSTALLATION CONDITIONS 6D IN CONDUIT IN DUCT DOMESTIC APPLIANCES CABLE CHARACTERISTICS Flexible 4D Level 1 Negligible Good +75 C C3-15 C Good Suitable in dry locations only. Use in radios, shavers, desk lamps and small portable equipment or use in office machines, hair dryers etc. and for appliances requiring an earth connection. Also suitable for use with double insulated appliances where the cord is not subject to mechanical stress. 04

7 LIGHT DUTY FLEXIBLE CORD TO AS/NZS 3191 Product Code C.S.A. ² Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m 2 Core Flat.52CLDFXF CLDFXF Core Circular.52CLDFX CLDFX Core Circular.753CLDFX Parallel Webbed, 2 Core Flat, Unsheathed.52CLDFXPW CLDFXPW CLDFXPW CLDFXPW CLDFXPW CLDFXPW

8 PVC ORDINARY DUTY 250/440V ORDINARY DUTY FLEXIBLE CORD TO AS/NZS 3191 CABLE DESIGN CONDUCTOR: Annealed copper conductor to AS/NZS 1125 Maximum continuous operating temperature: 75 C INSULATION: V-90 PVC Colours: 1C - Red, White, Light Blue, Black 2C - Brown, Light Blue 3C - Brown, Light Blue, Green/Yellow 4C - Brown, Light Blue, White, Green/Yellow 5C - Brown, Light Blue, Orange, White, Green/Yellow SHEATH: 5V-90 PVC Colours: Grey, White, Black, Orange INSTALLATION CONDITIONS 6D IN MACHINES IN CONDUIT DUCT DOMESTIC APPLIANCES CABLE CHARACTERISTICS Flexible 4D Level 1 Water Drops Good +75 C -15 C C3 Good 06 Wiring in dry locations only, in conduit or enclosures, such as switchboards, control panels, appliances and electrical equipment. such as radios, desk lamps and office machines, etc. Also used for extension leads in sizes 1 ² and above. Multicore cords containing an earth core are suitable for a number of applications in dry and damp conditions, such as domestic appliances (washing machines, dishwashers). Leads for industrial and office equipment requiring a three-phase supply and an earth connection.

9 ORDINARY DUTY FLEXIBLE CORD TO AS/NZS 3191 Product Code C.S.A. ² Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m Single Core.51CODFX CODFX CODFX CODFX CODFX CODFX Core Flat.52CODFXF CODFXF Core Circular.752CODFX CODFX CODFX CODFX CODFX Core Circular.753CODFX CODFX CODFX CODFX CODFX Core Circular.754CODFX CODFX CODFX CODFX CODFX Core Circular.755CODFX CODFX CODFX CODFX CODFX

10 PVC HEAVY DUTY 0.6/1kV HEAVY DUTY FLEXIBLE CORD TO AS/NZS AND AS/NZS 3191 CABLE DESIGN CONDUCTOR: Annealed copper conductor to AS/NZS 1125 Maximum continuous operating temperature: 75 C INSULATION: V-90 PVC Colours: To AS/NZS 3191 ( 4 ²) 1C - Red, White, Light Blue, Black 2C - Brown, Light Blue 3C - Brown, Light Blue, Green/Yellow 4C - Brown, Light Blue, White, Green/Yellow 5C - Brown, Light Blue, Orange, White, Green/Yellow To AS/NZS ( 6 ²) 3C - Red, Black, Green/Yellow 4C - Red, White, Black, Green/Yellow 5C - Red, White, Blue, Black, Green/Yellow INSTALLATION CONDITIONS SHEATH: 5V-90 PVC Colour: Black, Orange OD 25 6D OD>25 9D IN FREE AIR MACHINES IN DUCT DOMESTIC APPLIANCES LIGHT EQUIPMENT For ease of installation in switchboards and control panels where confined spaces and tortuous routes are encountered, or where flexibility is needed for hinged panels. For fixed wiring within other enclosures where the cable is not accessible without the use of tools. Suitable for extension leads in sizes 1 ² and above. Suitable for supply to small industrial and coercial equipment requiring three phase power. CABLE CHARACTERISTICS Flexible OD 25 4D OD>25 6D Level 2 Splashes Good +75 C C3-15 C Good 08 Also suitable for equipment requiring three phase and single phase supply and an earth connection, for example equipment containing a three phase motor and single phase pilot lights, such as industrial sweepers, vacuum cleaners, welders, etc. Suitable for use with double insulated appliances where the cord is subject to higher mechanical stress, in damp and wet conditions.

11 HEAVY DUTY FLEXIBLE CORD TO AS/NZS AND AS/NZS 3191 Product Code C.S.A. ² Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m Single Core (insulated only).51chdfxu CHDFXU CHDFXU CHDFXU CHDFXU CHDFXU Single Core.751CHDFX CHDFX CHDFX CHDFX CHDFX Core Circular.752CHDFX CHDFX CHDFX CHDFX CHDFX Core Circular (2 Core and Earth).753CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX Core Circular (3 Core and Earth).754CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX CHDFX Core Circular (4 Core and Earth).755CHDFX CHDFX CHDFX CHDFX CHDFX

12 PVC WELDING FLEX 0.6/1kV PVC WELDING FLEX TO AS/NZS 1995 CABLE DESIGN CONDUCTOR: Annealed copper conductor to AS/NZS 1995 Maximum continuous operating temperature: 90 C INSULATION: V-90HT PVC Where it is possible to guard against plastic flow and where reduced insulation resistance can be tolerated, V-90HT can be operated at atemperature up to 105 C for an average of 500 hours per annum during the cable service life.the use of the higher temperature insulationcompounds does not permit a higher currentcarrying capacity. AS/NZS recoends 75 C for currentcarrying capacity calculations. COLOUR: Black INSTALLATION CONDITIONS 6D IN FREE AIR INTERNAL WIRING LIGHT EQUIPMENT CABLE CHARACTERISTICS Flexible 4D Level 2 Splashes Good +90 C C2-15 C Good For use in welding applications, in areas with limited exposure to welding splash, and power and switchboard applications, to AS/NZS 1995 and AS/NZS

13 PVC WELDING FLEX TO AS/NZS 1995 Product Code C.S.A. ² Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m Single Core Welding Flex 101CWELDPVC CWELDPVC CWELDPVC CWELDPVC CWELDPVC CWELDPVC CWELDPVC CWELDPVC CWELDPVD

14 FLEXTREME 0.6/1kV SINGLE CORE CABLE TO AS/NZS WHERE APPLICABLE CABLE DESIGN CONDUCTOR: Annealed copper conductor to AS/NZS 1125 Maximum continuous operating temperature: 90 C INSULATION: R-EP-90 elastomer Colours: Natural SHEATH: HD-90-CPE heavy duty cross-linked elastomer Colours: Black INSTALLATION CONDITIONS INDUSTRIAL EQUIPMENT OD 25 6D OD>25 9D IN FREE AIR MACHINES LIGHT EQUIPMENT FESTOON MOBILE SUBMERGED EQUIPEMENT CABLE CHARACTERISTICS Very Flexible OD 25 4D OD>25 6D Level 3 Submersion Excellent +90 C C1-25 C Very Good 12 Flexible elastomeric insulated and sheathed cables are manufactured with extra fine stranding, suitable for use in welding flex (10² - 240²) and for LV mains connected equipment (eg. switchgear). Cables are oil and solvent resistant and suitable for permanent iersion to 100m. Used for flexible supply to equipment subject to movement or vibration and for ease of installation in confined spaces, or where tortuous routes are encountered.

15 FLEXTREME SINGLE CORE TO AS/NZS WHERE APPLICABLE Product Code C.S.A. ² Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m 1.51CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT

16 FLEXTREME 0.6/1kV MULTICORE CABLE TO AS/NZS 3191 AND AS/NZS WHERE APPLICABLE CABLE DESIGN CONDUCTOR: Annealed copper conductor to AS/NZS 1125 Maximum continuous operating temperature: 90 C INSULATION: R-EP-90 elastomer Colours: To AS/NZS 3191 ( 4 ²) 2C - Brown, Light Blue 3C - Brown, Light Blue, Green/Yellow 4C - Brown, Light Blue, White, Green/Yellow 5C - Brown, Light Blue, Orange, White, Green/Yellow To AS/NZS ( 6 ²) 2C - Red, Black 3C - Red, Black, Green/Yellow 4C - Red, White, Blue, Green/Yellow 5C - Red, White, Blue, Black, Green/Yellow ( 50 ²), Green ( > 50 ²) SHEATH: HD-90-CPE heavy duty cross-linked elastomer Colours: Black INSTALLATION CONDITIONS INDUSTRIAL EQUIPMENT OD 25 6D OD>25 9D IN FREE AIR MACHINES LIGHT EQUIPMENT FESTOON MOBILE SUBMERGED EQUIPEMENT CABLE CHARACTERISTICS Flexible OD 25 4D OD>25 6D Level 3 Submersion Excellent +90 C C1-25 C Very Good Cables are oil and solvent resistant, and suitable for permanent iersion to 100m. Used for flexible supply to equipment subject to movement or vibration and for ease of installation in confined spaces, or where tortuous routes are encountered. 14

17 FLEXTREME MULTICORE TO AS/NZS 3191 AND AS/NZS WHERE APPLICABLE Product Code C.S.A. ² Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m 2 Core 42CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT Core Cable (2 Core and Earth) 43CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT Core Cable (3 Core and Earth) 1.04CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT Core Cable (4 Core and Earth) 1.05CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT CFLXT

18 FLEXTREME 0.6/1kV MULTICORE CONTROL CABLE TO AS/NZS CABLE DESIGN CONDUCTOR: Annealed copper conductor to AS/NZS 1125 Maximum continuous operating temperature: 90 C INSULATION: R-EP-90 elastomer Colours: Black with White numbering, Green/Yellow SHEATH: HD-90-CPE heavy duty cross-linked elastomer Colour: Black INSTALLATION CONDITIONS INDUSTRIAL EQUIPMENT OD 25 6D OD>25 9D IN FREE AIR MACHINES LIGHT EQUIPMENT CABLE CHARACTERISTICS Flexible OD 25 4D OD>25 6D Level 3 Submersion Excellent +90 C C1-25 C Very Good Cables are oil and solvent resistant and suitable for permanent iersion to 100m. Used for flexible supply to equipment subject to movement or vibration. Suitable for machine centres and robotics and for ease of installation in confined spaces, or where tortuous routes are encountered. 16

19 FLEXTREME MULTICORE CONTROL TO AS/NZS Product Code No. of Cores Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON CFLXTCON

20 FLEXTREME 0.6/1kV MULTICORE SCREENED CABLE TO AS/NZS CABLE DESIGN CONDUCTOR: Annealed copper conductor to to AS/NZS 1125 Maximum continuous operating temperature: 90 C INSULATION: R-EP-90 elastomer Colours: To AS/NZS 3191 ( 4 ²) 4C - Brown, Light Blue, White, Green/Yellow 5C - Brown, Light Blue, Orange, White, Green/Yellow To AS/NZS ( 6 ²) 4C - Red, White, Blue, Green/Yellow 5C - Red, White, Blue, Black, Green/Yellow SHEATH: HD-90-CPE heavy duty cross-linked elastomer Colour: Black INSTALLATION CONDITIONS INDUSTRIAL EQUIPMENT OD 25 6D OD>25 9D IN FREE AIR MACHINES LIGHT EQUIPMENT FESTOON MOBILE SUBMERGED EQUIPEMENT CABLE CHARACTERISTICS Flexible OD 25 4D OD>25 6D Level 3 Submersion Excellent +90 C C1-25 C Very Good These four and five core cables are designed for applications where a screen is required. 18

21 FLEXTREME MULTICORE SCREENED CABLE TO AS/NZS Product Code C.S.A. ² Insulation Thickness Sheath Thickness O.D. Approx. Mass kg/100m 4 Core (3 Core and Earth) Screened 2.54CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN Core (4 Core and Earth) Screened 2.55CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN CFLXTSCN

22 CABLE SELECTION CURRENT CARRYING CAPACITY AND VOLTAGE DROP PVC FLEXIBLE CORDS Conductor Area ² Single Phase Current A Single Phase Voltage Drop mv/a.m Three Phase Voltage Drop mv/a.m Current ratings based on ambient temperatures of 25 C and a maximum operating temperature of 60 C. Where a flexible cord is coiled or wound on a spool, the following deratings apply. Number of Layers Derating Factor PVC FLEXIBLE CABLES Conductor Area ² Protected from Sun Two Single Core, or One Two Core Exposed to Sun Current-Amperes Three Single Core, or One Three or Four Core Protected from Sun Exposed to Sun Three Phase Voltage Drop mv/a.m* Single Core Cables Two Touching, Three Flat Touching, Three in close Trefoil Multicore Cables Two, Three and Four Core * For single phase voltage drop, multiply by

23 CABLE SELECTION CURRENT CARRYING CAPACITY AND VOLTAGE DROP FLEXTREME CABLES CURRENT RATINGS AND VOLTAGE DROP Conductor Area ² Protected from Sun Two Single Core, or One Two Core Current-Amperes Three Single Core, or One Three or Four Core Exposed to Sun Protected from Sun Exposed to Sun Three Phase Voltage Drop mv/a.m* Single Core Cables Multicore Cables * For single phase voltage drop, multiply by WELDING CABLES FOR A FIVE MINUTE PERIOD DUTY CYCLE Conductor Area ² Current Rating (A) Maximum Duty Cycle % 100% 60% 30% 25% 20% Electrical Characteristics Max D.C. Resistance at 20 C Ω/km Max A.C. Resistance at 90 C Ω/km DERATING FACTORS RATING FACTOR AMBIENT TEMPERATURE C Cond Temp C The current ratings are based on an ambient air temperature of 40 C. It should be adjusted for other ambient temperature, by the following factors. 21

24 CABLE SELECTION SAFE WORKING FORCE CABLES SUBJECTED TO STRAIGHT TENSION WITHOUT SIGNIFICANT BENDING OR FLEXING - SAFETY FACTOR 4:1 Conductor Area ² Single Core kn Two Core kn Three Core kn Four Core kn More Than Four Cores kn x N x N x N x N x N x N x N x N x N x N x N x N x N x N x N x N *Where N equals the number of cores of the same size 22

25 CABLE SELECTION MOTOR CURRENT SINGLE PHASE MOTOR Power Output Single Phase Voltage (V) Current Rating* (A) kw hp *Approximate full load currents for standard A.C. induction motors based on power factor and efficiency of 0.8 and 0.9 respectively 3-PHASE MOTOR Power Output Three Phase Line Voltage (V) Current Rating* (A) kw hp *Approximate full load currents for standard A.C. induction motors based on power factor and efficiency of 0.8 and 0.9 respectively 23

26 CABLE SELECTION 3-PHASE FORMULAE FORMULAE COMMONLY USED FOR DETERMINING VARIOUS PARAMETERS OF ELECTRICAL SYSTEMS Desired Data Single Phase Three-Phase I When kva * 1000 kva * 1000 kva is known Eo 3*E I When kw * 1000 kw * 1000 kw is known (Eo*pf) 3*E*pf I When hp * 746/ hp * 746/ hp is known (Eo*pf) 3*E*pf kva I * Eo I * E * kw I * Eo * pf I * E * 3 * pf hp I * Eo * pf I * E * 3 * pf The above table lists formulae coonly used for determining various parameters of an electrical system where: Eo = Single phase voltage, in volts. Eg 240V E = Three phase line voltage, in volts. Eg 415V (E = 3 x Eo) I = Current in amperes %Eff = Percent efficiency in decimals (varies from 85% for small motors to 90% and over in large motors) pf = Power factor in decimals kva = Kilovolt-ampere hp = Horsepower kw = Kilowatts Power Output = Power Input x %Eff 3 =

27 GENERAL INFORMATION CABLE SELECTION The following are some simplified procedures for cable selection. Refer to the Wiring Rules and AS/NZS for detailed information. The four main electrical criteria for cable selection are: 1. Current rating 2. Voltage drop 3. Earth loop impedance 4. Short-circuit capacity Generally speaking, for: 1. Short route length, current-carrying capacity requirement will dictate the cable size selection 2. Long route length, voltage drop or earth loop impedance requirement will dictate the cable size selection 3. The short-circuit capacity of a cable shall be such that all short-circuit current occurring at any point of a circuit shall not cause the cable conductor temperature to exceed the maximum permissible limit CURRENT RATING Current rating of a cable depends on: 1. Installation method, eg., In air or ground, enclosed or unenclosed, etc. 2. Installation environment, eg., ambient temperature, depth of laying, presence of other cables or circuits nearby, etc. 3. Limiting temperatures of the cables for normal use, eg., PVC and XLPE insulated cables are 75 C and 90 C respectively. 4. Type of overcurrent protective device used, appropriate derating factor: for semi-enclosed (rewireable) fuses for fuses, e.g. AS 2005 series fuses, with I 2 = 1.6 x I N - No derating is required for circuit breakers, e.g. AS/NZS 4898 circuit breakers, with I 2 = 1.45 x I N Where: I 2 = convertional overcurrent fusing or tripping current I N = nominal current of the fuse or curcuit breaker Current ratings in this technical manual are extracted from AS/NZS VOLTAGE DROP Wiring Rules stipulate a maximum voltage drop of 5% of the nominal voltage between the point of supply and any point in the installation when the conductors are carrying maximum demand. Voltage drops in this technical manual are based on: 1. Maximum conductor temperatures of 75 C, 90 C and 110 C as indicated 2. Load power factor to give maximum voltage drop 3. Single core cables are touching in trefoil or flat formation 4. Supply frequency of 50Hz An Equation to determine minimum required cable size due to voltage drop is: Vc = V d x 1000/I x L millivolts/ampere metre Where: Vc Millivolts drop/ampere metre as given in the tables V d Maximum permissible voltage drop in volts I Current in Amperes L Route length in metres A Cable can now be selected such that Vc is equal to or less than calculated, and check that it will carry the current EARTH LOOP IMPEDANCE, AND SHORT CIRCUIT CAPACITY When relevant information on calculating these values is required please consult the Prysmian "Technical Cable Guide." 25

28 GENERAL INFORMATION Ambient temperature for current - carrying capacity: The temperature of the medium in the iediate neighbourhood of the installed cable: 1. including any increase in temperature due to materials or equipment to which the cables are connected, or are to be connected; but 2. excluding any increase in temperature which may be due to the heat arising from the cables at that point AS/NZS 1125: Conductors in insulated electric cables and flexible cords AS/NZS 1995: Welding Cables AS/NZS 3000: Australian/New Zealand Wiring Rules AS/NZS : Australian/New Zealand Standard - Electrical installations - Selection of cables Part 1.1: Cables for alternating voltages up to and including 0.6/1kV - Typical Australian installation conditions AS/NZS 3191: Electric flexible cords AS 3147: Superseded by AS/NZS 5000 AS/NZS 3198: Superseded by AS/NZS 5000 AS/NZS 5000: Australian/New Zealand Standard Electric Cables Polymeric insulated Part 1: For working voltages up to and including 0.6/1kV Part 2: For working voltages up to and including 450/750V Bending radius, installed: Refers to minimum bending radius to which the cable can be subjected to in its final position or location Bending radius, installing: Refers to minimum bending radius to which the cable can be subjected to during the installation process Conductor: That portion of a cable which has specific function of carrying current Cu: Copper conductor, usually refers to plain annealed copper Elastomer: Synthetic Rubber Thermosetting Polymer LV: Low voltage: a.c. = 50V and = 1000V; d.c. = >120V and =1500V Overcurrent: A current exceeding the rated value PACW: Plain annealed copper wire PE: Polythylene (see thermoplastic material) Point of Supply: The junction of the electricity distributor's conductors with the consumers mains (formerly known as consumer terminals) PVC: Polyvinyl Chloride R-EP-90: A cross-linked compound based on ethylene propylene copolymer or terpolymer, suitable for a maximum continuous operating temperature of 90 C Short-circuit current: A fault current resulting from a fault of negligible impedance between live conductors having a difference in potential under normal operating conditions TACW: Tinned annealed copper wire TCu: Tinned copper conductor Thermoplastic material: A material that can be readily softened and resoftened by repeated heating e.g. PVC and PE Thermosetting material: A material which cures by chemical reaction and when cured, or crosslinked, cannot be melted and reshaped e.g. XLPE XLPE: Cross linked polyethylene. For LV application, usually refers to X-90 grade (see thermosetting material) 26

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30 28 NOTES

31 ABN Heathcote Road Liverpool NSW 2170 Tel Fax sales.au@prysmian.com Whilst every care has been taken in the preparation of this publication, Prysmian Cables & Systems takes no responsibility for any errors and/or omissions. This technical manual is intended as a guide only and reference must be made by any person using this information to the appropriate Australian Standard and/or to local Electricity Supply Authority rulings. Copyright Prysmian Cables & Systems (ABN ) All rights reserved. Subject to change without notice. 29

32 Prysmian Cables & Systems 1 Heathcote Road, Liverpool NSW 2170 Tel , Fax /10