Cablesizer cable sizing calculations to iec and nec standards. The cymcap software is dedicated to performing ampacity and temperature rise calculations for power cable installations. Resources used include detailed cable parameters, maps paper and digital, asbuilt drawings, operations and maintenance records. Ampacity level taking into account the installation method of the cable, the software determines the cable size for the installed ampacity.
Multiphysics finite element analysis of underground power. Other important factors that need to be considered when selecting power. Southwire is proud to announce that our company has achieved a spot on the. Power cables ratings ampacity specialist designed and programmed usamp prime, the cable ampacity software, including its technical content and the graphical user interface. Power engineering software and solutions installations modeling including nonstandard configurations multiple duct banks and backfills the multiple duct banks and backfills addon module mdb is designed to determine the steadystate ampacity of cables installed in several neighboring duct banks andor backfills with different thermal. Power engineering software and solutions installations modeling including nonstandard configurations multiple duct banks and backfills. Ipcea p46426 power cable ampacities publications have often been referred to as the black books and have been used by engineers, planners, and system designers throughout the world. Pdf ampacity calculation of multiple independent cable. Jan 21, 2017 this feature is not available right now. Solar pv power plant underground cable sizing case study. Cable sizing and its effect on thermal and ampacity values in underground power distribution over the past decade, underground power distribution has become increasingly popular due to its reliability, safety, aesthetic characteristics, as well as the ever increasing focus on the environmental impacts of the various stages of. Keywordscable ampacity, buried cable, finite element analysis, multiphysics, shield grounding. 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.
A further verification has also been made with experiments. Introduction cable network usually forms a backbone of the power system. Weve created a number of resources to aid in your calculations, estimations and installations. The assembly is used for transmission and distribution of electrical power. In this work, ampacity analyzes of 154 kv high voltage xlpe underground power cable are made using ansys 5. Configuration optimization of cables in ductbank based on. Ampcalc cable ampacity software for underground systems from calcware company is a computer program that calculates power cable ampacity ratings andor cable operating temperatures for userdefined underground cable installations see figure 3.
Portable power cables types w, ggc, shdgc copper table h1 from icea s753812008 ampacities for portable power cables, amperes per power conductor types w, ggc, shdgc power conductor size single conductor two conductors three conductors four conductors five conductors six conductors. Ampacities are calculated for single or multiple underground systems including. Ampacity of lowvoltage power cables under nonsinusoidal currents abstract. Pcamp is an ampacity program developed by pdc that calculates steadystate and emergency ampacities for all cable types. Given the emergency time during which an emergency overload is applied, the cymcaprttr software predicts the temperature of the cable at the end of an emergency period. Usamp prime insulated cable ampacity software models all types of underground power cables pipetype, extruded, and solid paper. During this time period, these publications were the only complete document on power cable ampacities in the. Software programs usually use neher mcgrath method for the calculation of the cable ampacity.
For example, insulation, temperature, and the number of bundled wires. 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. It is cost effective, accessible anywhere, easily customisable, has improved interoperability, offers easier installation and. Practical power cable ampacity analysis a pdh online. Cable ampacity iec for multiple layers juleselec electrical 15 apr 17 11. The ampacity, or maximum allowable current, of an electric power cable depends on the allowable temperatures of the cable and any adjacent materials such as insulation or termination equipment. This dissertation addresses underground electric power cable ampacity and provides analytical, experimental, and operational test results for underground. Arc flash power cable ampacity rating dynamic and transient analysis enterprise integration cymgrd grounding grid analysis. Underground power cables serve a critical purpose in electric power applications and the electric grid. Other important factors that need to be considered when selecting power cables are. Electrical engineers use powertools to perform harmonic analysis, transient stability analysis, short circuit analysis, and to determine demand load, voltage drop, arcflash hazard analysis and protective device coordination.
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. Thus the configuration of cables determines the total ampacity value and the potential use of a ductbank. Keywords cable ampacity, buried cable, finite element analysis, multiphysics, shield grounding. Cable sizing software cable sizing calculation etap. Power cable installation guide cables installed into conduits or trays have installation parameters such as maximum pulling tensions, sidewall pressure, clearance, and jamming, which must be considered. Ampcalc for windows is a computer program from calcware which calculates power cable ampacity ratings andor cable operating temperatures for user defined cable installations. The requirements of the national electrical code nec and local codes must always be followed. Pdf cable ampacity calculation and analysis for power flow. Cyme power engineering software low voltage cable sizing. Cableizer is a software package for the design of power cable systems using electrical, mechanical, thermal and environmental calculations. Licenses for single computer, multiple computer and network applications are available.
Engineering data for copper and aluminum conductor electrical. Therefore, complete analysis of the power systems includes detailed analyses of the cable network, especially assessment of the cable ampacities. International electrotechnical commission the international electrotechnical commission is the international standards and conformity assessment body for all fields of electrotechnology. Computes steadystate and transient ampacities and temperatures for multiple cables with equal or unequal loading. High voltage xlpe cable systems technical user guide. Software ppcs polymeric power cable system software ppcs designed to be friendly used and tailored to different engineers needs, such as a quick estimation to the cable size for a given load and laying conditions. Cable sizing and its effect on thermal and ampacity values in. Cyme power engineering software and solutions power cable.
In addition, new forced convection heat transfer analytical methods were employed for cables in air, which provided for1ess conservative ampacity ratings. Usi offers strong electrical and electronic equipment design capabilities, and inhouse design and manufacturing of customengineered systems including custom control software programming. Software package for polymeric power cable system design. Cable ampacity is limited by the peak temperature to which the insulation is subjected, which is the sum of the ambient earth temperature power cable ampacity rating cooper industries. Cable ampacity is defined as the amount of electrical current that can flow in an underground cable which results in the. Various methods are in use today including computer simulation, ampacity tables, and a. Cable ampacity software cable sizing software cable. Aug 11, 2010 learn about cable ampacity features in etap 7. We provide sustainable solutions that help our customers effectively manage electrical, hydraulic and mechanical power more safely, more efficiently and more reliably. It is executed based on factors that include the soil thermal resistivity and temperature along with the grouping of the circuits. Evaluating software tools for electrical system design. Dielectric power loss factors tan for typical cable insulations are. Calculation of the cable ampacity considers only power cables since control cables transmit very little current that has negligible effect to the overall temperature rise. Cymcap cable ampacity software power cable ampacity rating simgrid markets cymcap software and provides technical support as well as trainings.
The ampacity of a cable depends on not only the material and design of a cable but also the distance between different cables. The accuracy of the calculation provides increased confidence in the design, upgrading, and analysis projects. Ratekit thermal rating toolkit software combines steady state and transient rating analysis with loss of strength and high temperature sag calculation modules. Determining the maximum current power cables can sustain without deterioration of any of their electrical properties is important for the design of electrical installations. Other installations, such as buried and aerial, have different installation parameters. The original version of this package was developed jointly by ontario hydro hydro one, mcmaster university, under the auspices of the canadian electricity association.
Revision to introduction corrections to the introduction for the standard with over 3000 ampacity tables for extruded dielectric power cables rated through 8 kv and laminar dielectric power cables rated through 500 kv are addressed in this amendment. These tables help you determine the cables ampacity, or simply, the ability of the cable, in varying conditions. The accuracy of the software provides increased confidence when upgrading power cable installations and designing new ones. Eatons cyme cymcap software is for performing ampacity and temperature rise calculations for power cable installations. Ieee standard power cable ampacity tables ieee 8351994 ieee standard power cable ampacity tables status. When designing electrical power systems, it is often necessary to determine underground cable ampacity. The cymcap software is dedicated to the calculation of ampacity and temperature rise calculations for power cable installations. The accuracy of the software provides increased confidence when upgrading power cable installations and designing new.
Introduction he rated current of the underground electric power cable line is limited by the maximal allowable temperature of cable conductor, given by the standard or the cable manufacturer. Usamp prime software models all types of underground power cables pipetype, extruded, and solid paper. Ampcalc is suitable for cable installations utilized in industrial, commercial and utility electrical power distribution systems. The reactance for single core cables is selected from the flat, touching column in from table 30 in asnzs 3008. Comparison of finite element analysis to iec60287 for. Usamp prime software models all types of underground power cables, computing steadystate and transient ampacities and temperatures. Many have experienced the frustration of a power outage resulting from a failed cable. The calculation determines the proper cable sizes to carry specified loads in designing new systems and upgrading power cable installations. Sep 26, 2016 most cable manufacturers provide ampacity tables on their websites. Ampacity audits an ampacity audit is intended to carefully determine the actual ampacity of an existing cable system. Etaps cable ampacity software is used for calculating cable ampacity based on nec, ieee, icea, iec, and bs standards for underground duct banks, cable trays dstar underground cable ampacity.
What is wire ampacity and how do you find ampacity rating. Cable ampacity software cable sizing software cable derating. The software examines cable temperature and ampacity in performing analysis of existing systems. An assessment of the methods for calculating ampacity of. Cable ampacity calculator energy and power for all. Our software has been designed to calculate the current rating, temperature rise and cable losses of high voltage power cables under multiple scenarios and installation conditions in accordance with iec standard 60287.
This paper investigates the ac resistance in the presence of harmonics and proposes ampacity derating factors for cables made according to cenelec standard hd603. The powerfactory cable analysis tool contains two packages. These design requirements can be userdefined or automatically determined from load flow, short circuit, and protective device calculation results. Gridcablemax is a user friendly program that determines cable ratings with total accuracy. The software is suitable for use with windows 7, 8. Iec 60502 cable capacity calculations for power cables per iec 60502 iec 60364. In this paper, he best configuration t based on ampacity.
Cable ampacity software is designed to simulate the thermal behavior of power cable installations. Models duct banks, pipe cables, extruded cables, directly buried cables, casings, or mixtures thereof. Table 7 6 minimum bending radii power cables without metallic shielding or armor 42 table 7 7a minimum bending radii twisted pair instrumentation cable 42. Turn your smartphone into the most valuable tool on your belt. Ieee power cable ampacity software with ieee std 8351994 r2006 on cdrom many factors influence the amount of current a given cable can transfer. 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. Index terms finite element analysis, multiphysics analysis, cable insulation, cable shielding, grounding. Engineering data for copper and aluminum conductor. Cymcap is dedicated to performing ampacity and temperature rise calculations for power cable installations.
The accuracy of the software provides increased confidence when upgrading power cable installations and designing new ones it also helps increase system reliability and supports the proper utilisation of the installed equipment. The synergi electric module cable ampacity lets you determine how soil condition and duct bank configuration affect cable ampacity. Southwire recognized on top employer list for 2020. Iec 60502 cable capacity calculations for power cables per iec 60502. This calculator also provides wire size correction factors for temperature, number of conductors in a raceway, and voltage drop for long wire runs. Power cables without metallic shielding or armor 42. Assessment of 69 kv underground cable thermal ratings. The cable sizing package can be used either to verify the suitability of the assigned line types or to obtain recommendations for new line types according to a selected international standard or according to userdefined voltage, thermal, and shortcircuit constraints. Wael moutassem, phd manager, power cable research and.
Keywords cable ampacity, nehermcgrath method, pv studies, solar power generation, power cable sizing i. Follow us on social media to get the eaton is a registered trademark. Cable sizing software computes the size of the cable by also considering overload protection. Cable heating is a direct function of the power carried by an underground cable and therefore a limiting steadystate current rating ampacity is used to rate the amount of electrical current allowed to flow through the line. Exact cable ampacity when cable parameters, construction, laying methods and bonding techniques used all are known. The software is an efficient tool for making complex calculation tasks straightforward and easy. An experimental setup is developed to measure conductor and surface temperature of the cable in underground conditions. Support structure conduit three conductor cable ampacity tablets. I work as design engineer in one company and i would like to use this tool for our calculation. 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. Webbased cable platform for design and calculation of energy cables including cable rating ampacity, electrical parameters, magnetic fields of multifrequency systems, shortcircuit, cable. The latest version has also added a feature for aerial calculations.
Solar pv power station case study a solar photovoltaic pv power station located in arizona was studied with the goal of comparing the preinstallation engineering analysis of cable temperature and ampacity with. We maintain that program for epri, and may use it for epri member utilities. Cable ampacity is limited by the peak temperature to which the insulation is subjected, which is the sum of the. This method calculates the impedance for the worse case power factor, i. Cable ampacity studies calculate the currentcarrying capacity ampacity of power cables in underground or above ground installations. The wire size calculator will give you a very simple and quick solution to the problem of calculating the size of wires and cables for pump applications in golf courses, landscape projects, and agriculture. Ieee power cable ampacity software with ieee std 835 1994. Providing you the information and recommendations for southwire products. Power cables are mainly used for power transmission and distribution purpose. In addition, pdc engineers developed the ace program used in the epri ut workstation. In case of cable duct bank with a number of lines, fea shows a stronger electromagnetic and thermal interference than predicted by the iec 60287 standard. Enter the information below to calculate the maximum allowable ampacity for currentcarrying conductors. Cableizer is completely webbased because we believe saas is the future.
Calculation of the cable ampacity considers only power cables since control cables. Ampacity of lowvoltage power cables under nonsinusoidal. 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. These cables are widely used in lowvoltage industrial and building installations. Practical power cable ampacity analysis velimir lackovic, mscee, p. The wire ampacity calculator will quickly calculate the maximum allowable current through a conductor based on wire size awg or kcmil, wire insulation, conductor type and installation method. Practical power cable ampacity analysis ced engineering. An audit begins with evaluating the utilitys load shape, the circuit plan and profile drawings, manufacturers cable data, any soil thermal analyses, etc. Gridcablemax hv cable sizing software made for engineers. The standard is applicable to all alternating current voltages and direct current cables up to 5kv. Instant answers to help better navigate your job site calculations. Etap cable sizing program calculates the minimum size required by meeting the overload protection conditions between derated ampacity, operating current and nominal current.
Iec 60287 calculation of the continuous current rating of cables 100% load factor is the international standard which defines the procedures and equations to be used in determining the current carry capacity of cable. For insulated cables, the insulation maximum temperature is normally the limiting material property that constrains ampacity. Etap electrical engineering software offers a comprehensive set of cable current carrying capacity ampacity and sizing modules based on the following standards and guidelines. The tables in this standard reflect these changes in methodology and provide the user with a vast array of cable ampacity ratings for 600 v utilization cables, medium voltage distribution. It is an assembly of one or more individually insulated electrical conductors, usually held together with an overall sheath. Introduction the ampacity of underground power cable lines is limited.
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