Covered ine wire aluminum, acsraacaaac, xlpe or pe insulated technical data continued code word size awg or kcmil number of strands insulation thickness cable od rated strength weight pe xlpe mil in lb lbkft lbkft apple 6 1 30 0. Aluminum conductor steel reinforced bare applications used as bare overhead transmission conductor and as primary and secondary distribution conductor and messenger support. Computer aided analysis and design of ehvac transmission line. Unless otherwise specifically permitted elsewhere in this code, the overcurrent protection for conductor types marked with an asterisk shall not exceed 15 amperes for no. Singlephase voltages are usually 115v or 120v, while threephase voltages are typically 208v, 230v or 480v. Abstract retensioning andor reconductoring are considered the most popular costeffective ways to increase the efficiency of power capacity of an existing aerial line.
Acsr x aaac conductors equivalence table aaac conductors equivalent to acsr conductors have been developed, with the same diameter, electric resistance and ampacity, but with a very lower weight. Wire size choose the size awg or kcmil of the wire for which to calculate the maximum allowable ampacity based on the conditions chosen above in the calculator phases select the number of phases in the circuit. The thermal limit of the conductor is established by the fact that further heating anneals the conductor. A holistic method for conductor ampacity and sag computation. Cable ampacity typically depends largely on the crosssection of ist conductor due to cost reduction it is of interest to keep the conductor cross. Applications range from long, extra high voltage ehv transmission lines to subservice spans at distribution or utilization voltages on private premises. Acsr x aaac conductors equivalence table aaac conductors equivalent to acsr conductors have been developed, with the same. Acsr aluminum conductor steel reinforcedis used as bare overhead transmission cable and as primary and secondary distribution cable. What is wire ampacity and how do you find ampacity rating. Ampacity is the maximum current measured in amperes or more simply, amps an insulated conductor can safely carry without exceeding its insulation and jacket temperature limitations. Aacsr aluminum alloy conductor steel reinforced has also a long service record because of its economy, dependability, and strength to weight ratio. Aluminium conductor steelreinforced cable acsr is a type of highcapacity, highstrength stranded conductor typically used in overhead power lines. Variable steel core stranding enables desired strength to be achieved without sacrificing ampacity.
This wire is suitable for use in all practical spans on wood. Sagtension and ampacity study 18 20 22 sag m 1200 1400 1600 1800 current capacity a gtacsr 448 sag acsr 43555 sag gtacsr 448 ampacity acsr43555 ampacity 20. Variable steel core stranding for desired strength to be achieved without sacrificing ampacity. Acsr is concentrically stranded conductor with one or more layers of aluminium wire harddrawn 50h19 on the galvanized steel wire core. Core wire for acsr is available with class a, b, or c galvanizing. House and tuttle 1958 derive the ampacity calculations described below, which are used in ieee std. Similarly, when the maximum temperature increases beyond 45 0c, there would be a reduction in the ampacity. Major utilities, distributors and contractors recognize nexans as a quality supplier and a technology leader.
A given conductor has several ampacities, depending on its application and the assumptions used. For example, for acsr moose conductor for a maximum conductor temperature of 85 0c, the ampacity goes up from 798 a to 874 a, a rise of 9. Nov, 2015 ampacities the ampacity is the maximum designed current of a conductor. Acsr aluminum conductor steel reinforced on american wire. This rating has been determined by the nec national electrical code, which lists ampacity ratings for reallife installation examples. Aluminium conductor steel reinforced acsr awg series. See the options section to find the appropriate code word modifier designation for alternative design options. B230b230m specification for aluminum 50h19 wire for electrical purposes.
Additional corrosion protection is available through the application of grease to the corer or infusion of the complete cable with grease. The core may be single wire or stranded depending on the size. Introducing transpowr with e3x technology, the utility industrys first heatdissipating conductor that optimizes the power grid by adding more capacity and controlling losses, ultimately resulting in improved sustainability. Aaac, acsr, ampacity, composite conductors, conductor creep, high temperature, overhead line, reconductoring, retensioning, sag. Aluminium cable acsr astm b aluminium conductor steel reinforced dimensions astm sizes astm sizes ts iec 1089 code al mm. Equivalent conductors gauge acsr aaac 6 awg turkey akron 4 awg swan alton 2 awg sparrow ames.
B263 test method for determination of crosssectional area of stranded conductors. Email this page download pdf download pdf printable page. Equivalent conductors gauge acsr aaac 6 awg turkey akron 4 awg swan alton 2 awg sparrow ames 10 awg raven azuza. Per nec you cannot use wire ampacity from a column higher than the lowest wireterminaldevice rating weakest link concept. Jun 15, 2016 current carrying capacity of acsr conductor depends upon following. Transpowr bare overhead transmission conductor and other overhead wires csa or astm specifications canadian designs new transpowr with e3x technology. Acsr bare conductor meets or exceeds the following astm specifications. Covered ine wire aluminum, acsr aacaaac, xlpe or pe insulated technical data continued code word size awg or kcmil number of strands insulation thickness cable od rated strength weight pe xlpe mil in lb lbkft lbkft apple 6 1 30 0. Aluminum conductor composite reinforced technical notebook. A methodology for dynamically adjusting a transmission. Most cable manufacturers provide ampacity tables on their websites.
Aluminum conductor steelreinforced concentriclaystranded. As the amount of current passing through a conductor is increased, the amount of heat produced in the conductor increases. The center strand is steel for additional strength to help support the weight of the conductor. B230 aluminum wire, 50h19 for electrical purposes b231 aluminum conductors, concentriclaystranded b232 aluminum conductors, concentriclaystranded, coated steel reinforced acsr b502 aluminumcoated steel core wire for aluminum conductors, steel reinforced acsr aw. Acsr is a composite concentriclaystranded conductor. Acsr aluminum conductor steel reinforced has a long service. When selecting a cable, one must know its wire ampacity rating. This has been calculated on the basis of a formula from ieee standards ieee std 7382006.
What is the current carrying capacity of acsr conductors. The combined light weight and high conductivity of aluminum with strength of the steel cores enable higher tensions, less sag, and longer spans than any alternative as like as acsr. Conductor data sheet aluminum conductors steel reinforced acsr approx. Conductor data sheet aluminum conductors steel reinforced acsr maximum dc code resistance name steel total aluminium steel aluminium steel total at 68 of awg or awg or length cond. Rated strengths shown are applicable for acsrga2 and acsrma2 cores. They are normally protected against corrosion by a zinc coating. Maximum dc code overall rated resistance name steel total aluminium steel diameter aluminium steel total strength at 20 oc awg or awg or mcm mcm turkey 6. Guidelines for rationalised use of high performance conductors. Determination of the ampacity of buried cable in nonhomogenous environmental condition by 3d computation 386 the insulation, the dimensions of the cable, and the operating voltage. Current carrying capacity of acsr conductor depends upon following. All access to and use of this site and all websites including mobile websites, applications, or other services on which these terms reside collectively the city electric supply property, or ces property, and the features and functions on this ces property, are subject to these terms of access. Voltage enter the voltage at the source of the circuit. Dead soft annealed copper clad steel grounding conductor dsa ccs optical ground wire opgw steel overhead grounding wire and stranded steel guy wire. Aluminiumconductor steelreinforced cable wikipedia.
Jpower systems corp gaptype conductor hightemperature low. Ampacity ampere capacity limitation maximal permitted operational conductor temperature. These values are based on allowable ampacities of insulated conductors rated up to and including 2000 volts, not more than three currentcarrying conductors in a raceway, cable, or earth, singleinsulated conductor in free air, and an ambient air temperature of 30c 86f. Jpower systems corp gaptype conductor hightemperature. The facility consists of a 2m span of 267 336 kcmil acsr conductor completely instrumented ented with thermocouples as well as a sag and tension device. Canada standard section conductors type section awg al mm 2 steel mm total mm copper equivalent mm aluminium steel no. This wire is suitable for use in all practical spans on wood poles, transmission towers, and other structures. For some cable constructions, notably for highvoltage, paper insulated cables. Bare overhead conductors nexans is a diversified wire and cable manufacturer. Pdf weatherbased ampacity of overhead transmission lines. Acsr aluminum conductor steel reinforced on american wire group. Periodic or continuous measurement of these values allows the thermal limit of the line to be regularly updated. Aacsr conductor,aluminum alloy conductor steel reinforced. Acsr acsr is a composite concentriclay stranded conductor consisting of a central steel core around which are stranded one or more layers of aluminum alloy 50h19 wires.
With a wide range of stranding ratios and steel core strengths, transpowr acsr can be tailored to offer the right balance of strength and ampacity for your overhead. This current carrying capacity is normally given in amperes. Transpowr acsr aluminum conductor steel reinforced general cables transpowr acsr aluminum conductor steel reinforced provides exceptional performance and reliability. The steel strand or strands form the central core of the conductor, around which is stranded one or more layers of aluminum 50h19 wires. Nexans has been designing, manufacturing and delivering cables to customers in north america since 1911. Excerpt from the proceedings of the 2012 comsol conference in milan. Referenced documents purchase separately the documents listed below are referenced within the subject standard but are not provided as part of the standard astm standards. Ampacities the ampacity is the maximum designed current of a conductor. The steel core may consist of a single wire, 7, 19, 37 or more concentrically stranded wires. The steel core may consist of a single strand or a. Aluminium conductor steel reinforced acsr awg series nexans. A methodology for dynamically adjusting a transmission line rating on an island grid in the caribbean 78 conductors operating temperature.