Steel wire armoured cable, commonly abbreviated as swa, is a hardwearing power cable designed for the supply of mains electricity. The advanced wire ampacity calculator will calculate the maximum ampacity for a wire based on wire gauge, preferred or available wire insulation, conductor type and installation specifications. Medium voltage power cable 11kv three core swa cse. Conductor ampacity calculator freeware mc group electrical calculation software. Practical power cable ampacity analysis ced engineering. This takes into account correction factors for voltage drop, temperature and the number of currentcarrying conductors. What is wire ampacity and how do you find ampacity rating. Gore builds flat cables specifically for such high flex applications including linear motionmotion. As medium voltage cable specialists, our experts in the cable lab can advise on the most appropriate cable for your application and the correlating accessories for the installation environment. Therefore, complete analysis of the power systems includes detailed analyses of the cable network, especially assessment of the.
Buried cables are often routed through short segments of conduit, and when this situation occurs, the ampacity must be reduced or the cable will overheat as a result of the high thermal resistance created at the location of the conduit. Usamp prime insulated cable ampacity software models all types of underground power cables pipetype, extruded, and solid paper. The cable sizing calculator calculates the required cable size according to as nzs 3008 australia and new zealand standard. Models duct banks, pipe cables, extruded cables, directly buried cables, casings, or mixtures thereof. Figure 5 is an example of a chart for selecting the proper welding cable size. C insulation, copper wire, 3 current carrying conductors in a raceway.
A wide variety of 185mm2 cable options are available to you, such as copper, aluminum. General information on high voltage cable systems 1. Cable ampacity software cable sizing software cable derating. Cable ampacity, buried cable, finite element analysis, multiphysics, magnetic shielding, proximity effect, cable duct bank i. About 94% of these are power cables, 4% are electrical wires, and 0% are control cables. The accuracy of the software provides increased confidence when upgrading power cable installations and designing new ones. Other companies produce their own software tools some free, some you need to pay for.
The nec standard does not provide cable ampacity derating due to bottom cover or correction of the cable ampacity multiplying factors due to the cumulative effects of combinations of tray covers and fireproofing. Determination of the cable rating for a duct bank with a. Aluminum and flexible cables are not supported yet. As an example, lets assume you have a 400 amp power source at 60% duty cycle and need a total combined length of electrode plus work cables of 100 feet. These ampacities are approximate and must be modified for the environment number of current carrying conductors in the raceway, ambient temperature, etc. High voltage three phase cable ampacity quickfield fea software. For ambient temperatures other than 78f 86f, or more than three currentcarrying conductors in a raceway, cable or earth, use the advanced wire ampacity calculator.
High voltage 3phase cable laid in trefoil formation underground. Wire ampacity metric compared with english wire size is usually identified as the area of the conductor in square millimeters. Ampacity ratings need to be derated if more than three currentcarrying conductors are in a raceway or gore high flex cable design tool. Due to the greater burying depth, the software indicates that the ampacity of the cable is decreased significantly up to 50% in some cases. A global solutions provider, prysmian offers a wide range of integrated. These limits should not be used for cables subjected to pulling tensions during installation. Pdf cable ampacity calculation and analysis for power flow. The software examines cable temperature and ampacity in performing analysis of existing systems. They consider only temperature limited, current carrying capacity of cables. Practical power cable ampacity analysis velimir lackovic, mscee, p. Medium voltage power cable 11kv three core swa cse distributors. At myelectrical we have put together a series of free software tools to assist our users in carrying out their work. We have great awa stock at the best prices online all cut to your desired length call 01244 2888. It is executed based on factors that include the soil thermal resistivity and temperature along with the grouping of the circuits.
The current rating is based on the cable type, the insulation type and the cable installation method. Cable ampacity calculation and analysis for power flow optimization. High voltage xlpe cable systems technical user guide. Multiple awg choices consult responsible engineer for required ampacity awg american wire gauge to mm2 millimeters squared conversion spec a185 april, 2010. Cablesizer cable sizing calculations to iec and nec standards. Steel wire armour provides mechanical protection, which means the cable can withstand higher stresses, be buried directly and used in external or underground projects. Power cable ampacity software eaton s mission is to improve the quality of life and the environment through the use of power management technologies and services. Cable ampacity software cable sizing software cable.
The cable sizing calculator considers solid or stranded copper conductors only. Other charts are available from cable manufacturers and welding reference books. Below is a list of some of the software we have found useful and maybe of benefit to our users. Other organizations that supply ampacity tables include ieee institute of electrical and electronics engineers, which offers more than 3,000 ampacity tables for extruded dielectric power cables rated through 8 kv and laminar dielectric power cables rated through 500 kv. The cable ratings in are based on an ambient temperature of 40c and a ground temperature of 25c. As an example, lets assume you have a 400 amp power source at 60% duty cycle and need a total combined length. As a cable ampacity analysis application, etap engineering software determines the cable current capability based on ieee, iec, icea, nec nfpa, bs, and nfc standards. Gore trackless cable and gore high flex flat cable use conductor ampacity tables and correction factors. Cyme power engineering software low voltage cable sizing. The ampacity of a cable should equal or exceed the maximum current the cable will be expected to carry during its service life, without exceeding its temperature rating. Cables dvson 03 basec certified cables armoured cables bs 5467 and bs 6346 definition armoured cable is the name given to electrical cable constructed with alayer of aluminum wire armour or steel wire armour. Ampacity level a taking into account the installation method of the cable, the software determines the cable size for the installed ampacity. Review software interface on how to navigate the software effectively. Sep 26, 2016 most cable manufacturers provide ampacity tables on their websites.
These wires are available in different thickness and gauges. The calculation determines the proper cable sizes to carry specified loads in designing new systems and upgrading power cable installations. Determining the maximum current power cables can sustain without deterioration of any of their electrical. Iec 60502 cable capacity calculations for power cables per iec 60502.
The accuracy of the calculation provides increased confidence in the design, upgrading, and analysis projects. Review study options to learn how they affect study results. The chinese electrical code ampacities are close to the ampacities listed in the nec. Home download center electrical software cable ampacity calculator description this is digital version of the most frequently used ampacity tables that you would find in electrical codes canadas cec and u. Computes steadystate and transient ampacities and temperatures for multiple cables with equal or unequal loading. Gridcablemax hv cable sizing software made for engineers by. Correction factors for ambient temperatures over 30c, multiply the ampacities shown in table 1 or table 3 by the appropriate correction factor to determine the maximum allowable load current.
Custom cable and custom heat shrink shapes are another of our specialties. Comparison of finite element analysis to iec60287 for predicting underground cable ampacity simon dubitsky tor ltd, st. A wide variety of xlpe cable 185mm options are available to you, such as conductor material, jacket, and type. When multiple cables are in proximity, each contributes heat to the others and diminishes the amount of external cooling affecting the individual cable conductors. Armoured xlpe mains cable to british standard bs5467 suitable for power networks. Ampacities are based on single isolated cable in air operated with opencircuited shield. Introduction cable network usually forms a backbone of the power system. This problem is examined for extruded cables by using a finite element heat transfer software. Cable ampacity calculator electrical engineering portal. Therefore, complete analysis of the power systems includes detailed analyses of the cable network, especially assessment of the cable ampacities. The accuracy of the calculation provides increased confidence. This includes the 11kv triplex formation cable for ukpn. Cable sizing and its effect on thermal and ampacity values in. The primary purpose of the ampacity calculations was to detennine a minimum conductor size and cable system configuration based on the design requirements provided by xcel energy.
In single core wire there is only a single core of metal is present, mostly copper or aluminum. High voltage xlpe cable systems techincal user guide brugg cables page 3 1. Gore offers a unique combination of engineering skills and materials expertise, to provide creative and reliable solutions for your demanding flat cabling needs. We provide sustainable solutions that help our customers effectively manage electrical, hydraulic and mechanical power more safely, more efficiently and more reliably. A singleconductor cable is implemented to evaluate the maximum allowable current, while keeping the conductor temperature at a defined maximum temperature the cable consists of a conductor material as well as different isolating layers and armour. Determining the maximum current power cables can sustain without deterioration of any of their electrical properties is important for the design of electrical installations.
Usamp prime software models all types of underground power cables pipetype, extruded, and solid paper. Eandis uses this software to simulate the thermal effects of cables installed at greater depths, using directional drilling. What is the difference between single core and multicore. The cymcap software is dedicated to performing ampacity and temperature rise calculations for power cable installations.
Southwire recognized on top employer list for 2020. The software is an efficient tool for making complex calculation tasks straightforward and easy. Calculation of the cable ampacity considers only power cables since control cables. Cablesizer is an automated cable sizing and design calculation tool to iec and nec standards. Southwire, an industry leader in wire and cable solutions, and go industries, dba longhorn reels, a texasbased company that manufactures wire and cable solutions, have resolved pending litigation. The overall ampacity of insulated cable conductors in a bundle of more than three cables must also be derated, whether in a raceway or cable. Cable network usually forms a backbone of the power system. Lead wire reference chart poster electrical cable supply. Comparison of finite element analysis to iec60287 for.
Nfpa 70 standard cable ampacity software cable sizing. Single core cable a single core wire is a cylindrical strand of metal. A 3 core medium voltage power cable 11kv bs6622 cu xlpe cts pvc swa pvc 6. Determination of accurate cable ampacity ratings based on installation scenarios. The following wire areas were translated from a chinese electrical code manual ampacity table. This calculator also provides wire size correction factors for temperature, number of conductors in a raceway, and voltage drop for long wire runs. Conductor ampacity calculator freeware mc group electrical. The cable ampacity analysis software applies to cables in above ground trays, conduits, and air drop. Ampacity derating factors for cables buried in short segments.
Power cable installation guide figure f5 multiple sheaves figure f6 sheave arrangements for feeding into cable tray training radius the training radius is the final positioning of cable ends after the cable has been placed in the raceway. Use of computer programs for calculation of underground cable ampacity software programs usually use neher mcgrath method for the calculation of the cable ampacity. Eatons cyme cymcap software is for performing ampacity and temperature rise calculations for power cable installations. Etap electrical engineering software offers a comprehensive set of cable current carrying capacity ampacity and sizing modules based on the following standards and guidelines.
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