High voltage xlpe cable systems techincal user guide. Cyme power engineering software and solutions power cable. Conductor ampacity calculation part seven electrical knowhow. Determination of the cable rating for a duct bank with a.
Maximum ampacity current capacity for wire and cable alte. Kerite combines kerites high voltage hv cable with a turnkey engineering and installation package for a singlesource solution to any. With those modules, the user can evaluate the magnetic flux density at any point on or above the ground of an underground cable installation, determine the positive and zero sequence impedances and admittances for all the cables. Cyme power engineering software and solutions power. Engineering data for copper and aluminum conductor electrical. Cable design form to scale input of cable designs is facilitated by a cable expert system. Singlephase voltages are usually 115v or 120v, while threephase voltages are typically 208v, 230v or 480v. Etaps cable systems program allows operation of subsea cables at their maximum potential while providing secure and reliable operation.
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. Cable ampacity is limited by the peak temperature to which the insulation is subjected, which is the sum of the. The kerite company manufactures specialized, epr insulated, medium voltage cables, rated 5kv to 35kv and pilc replacement cable in the seymour, ct location. The cymcap software is dedicated to the calculation of ampacity and temperature rise calculations for power cable installations. Okonite 1 printed on post consumer paper 12017 okonite cables. Usamp prime insulated cable ampacity software models all types of underground power cables pipetype, extruded, and solid paper. High voltage xlpe cable systems techincal user guide brugg cables page 3 1. Voltage enter the voltage at the source of the circuit. High voltage xlpe cable systems technical user guide. One exception to the xlpe or epr insulation types is a keritesupplied material. Conductorcable terms, conductorcable insulation materials terms, conductorcable tests terms, conductorcable manufacturing process terms.
Introduction when cables need to cross natural or manmade obstacles. Like hendrix, kerite produces cables for the electric utility market. Kerite cable supplies mediumvoltage, primary cable to the electric utility market from a different locations. Ampacity calculation assumptions conductor material and voltage 46kv aluminum conductor. Skm software help desk cable ampacity triplexed cables. This calculator also provides wire size correction factors for temperature, number of conductors in a raceway, and voltage drop for long wire runs. The accuracy of the calculation provides increased confidence in the design, upgrading, and analysis projects. Permalife medium voltage is a jacketed single conductor power cable designed for.
Integrated into the power cable provides the most precise monitoring, can be used to infer the conductor temperature and with dynamic rating. Cable ampacity software cable sizing software cable derating. For library directly buried cable detail 8 or detail 7. The cable ampacities tabulated for this paper were calculated with cymcap version 3. Comparison of finite element analysis to iec60287 for.
Cable ampacity software cable sizing software cable. Submarine cable analysis etap provides cable pulling, cable sizing, and automatic cable ampacity software for a complete analysis for subsea cable systems. This characteristic parameter depends on many of the cable properties, installation conditions and. The kerite htf product is a corrosionresistant cable with a high degree of mechanical integrity that has also demonstrated superb decompression resistance. Introduction cable network usually forms a backbone of the power system. General information on high voltage cable systems 1.
Cable ampacity tables for direct current traction power. What is wire ampacity and how do you find ampacity rating. This characteristic parameter depends on many of the cable properties, installation conditions and surrounding environment. Cable network usually forms a backbone of the power system.
These thermal analyses pertain to temperature rise andor ampacity calculations using the. Hendrix wire and cable manufactures, sells and services underground and overhead medium voltage cable. Calculation of the cable ampacity considers only power cables since control cables. Submarine cable software submarine cable analysis cable. Kerite also has a rigid quality assurance program that, because we. The calculation determines the proper cable sizes to carry specified loads in designing new systems and upgrading power cable installations. Both are brands with decades of experience manufacturing the worlds most reliable power cable. The software examines cable temperature and ampacity in performing analysis of existing systems. Computes steadystate and transient ampacities and temperatures for multiple cables with equal or unequal loading.
If multiconductor cables are placed in a single layer in uncovered trays, with a maintained spacing of not less than 1 cable diameter between cables, the ampacity of the cables shall not exceed the allowable ambient temperaturecorrected ampacities of multiconductor cables with not more than 3 insulated conductors in free air in accordance with section 310. A minimum life of forty years is expected when the cable is properly installed. Cable sizing and its effect on thermal and ampacity values in. Cable ampacity, buried cable, finite element analysis, multiphysics, magnetic shielding, proximity effect, cable duct bank i. By using a fibre optic fo cable and measuring device, the theoretical results, as simulated by the software, can be compared with realtime measurements. These should be triplexed cables, im not sure why they show up as not being in a triplex form but rather just side by side. Cymcap is windowsbased software designed to perform thermal analyses.
Most cable manufacturers provide ampacity tables on their websites. Cable ampacity calculator electrical engineering portal. Ampacity cable sizing calculations to iec and nec standards. For more than 150 years, kerite has manufactured the highest quality insulated utility transmission and distribution power cables as well as industrial power cable. Models duct banks, pipe cables, extruded cables, directly buried cables, casings, or mixtures thereof. Therefore, complete analysis of the power systems includes detailed analyses of the cable network, especially assessment of the cable ampacities. 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. 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. Kerite power cables 5kv thru 8kv utilize permashield as a. Nonhomogenous environment is considered for cable ampacity calculation and results are compare with homogenous environment condition keywords. Conductor ampacity calculation part one electrical knowhow. These products significantly reduce power ampacity loss compared to steel and. It has manufactured underground distribution cables since 1926 and subsea cable since the late 1800s.
Plants undergoing license renewal have agreed to a cabletesting program after. 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. Computes steadystate and transient ampacities and temperatures for. Engineering data for copper and aluminum conductor. Determination of the ampacity of buried cable in non. Medi ltage single conductor 5 35 mv cable copper mv cable aluminum nec table 310.
Cable ampacity software additional modules allows performing several analyses of interest for cables installations other than thermal analysis. Determine both the 600 volt and medium voltage calculations to estimate and manage cable installation projects. Use this simple tool to calculate conduit size and fill percentage, pulling tensions, cable sidewall. Cable ampacity power system software and arc flash hazard.
Milan uzelac, satish kumar chinari g&w electric, bruce miller kerite. Shielding copper tape cupronickel tape concentric neutrals round or flat tape and round concentric neutrals insulation system 100% level with single permashield. In addition to the 15kv product, kerite has begun to manufacture for the first time a 2500 kcmil 69kv power cable, for customers who need to increase ampacity above 15kv in a particular circuit. At brugg cables, professional computer programs are in use for the calculation of the various cable data. Cable ampacity tables for direct current traction power systems. Use of and creating library models for physical cables and ducts. Installation data despite the selection of the proper kerite cable for the application, its ultimate service life can be adversely affected if proper. Attached to the power cable provides relative temperature information, which is important when making decisions about the cable and for knowing the cables condition and environment. With those modules, the user can evaluate the magnetic flux density at any point on or above the ground of an underground cable installation, determine the positive and zero sequence impedances and admittances for all the cables present in an. Kerite, founded in 1854 and headquartered in seymour, connecticut, is a subsidiary of marmon utility, a berkshirehathaway company. The kerite company manufactures aluminum and copper conductor cables with epr insulation. The standard employs the concept of thermal equivalent circuit 2. The kerite insulations are based on years of experience in the field, as well as extensive testing.
Jul 07, 2015 kerite combines kerite s high voltage hv cable with a turnkey engineering and installation package for a singlesource solution to any hv cable challenge. The kerite company manufactures specialized, drepr insulated, 5kv to 8kv cables. Conductor ampacity calculation part seven electrical. For example, a 10 awg 3c 600 v cable is installed in an ambient temperature of 50c. For more than 150 years, kerite has manufactured the highest quality insulated utility transmission and distribution power cables as. When multiple cable lines are arranged close together, it is. They consider only temperature limited, current carrying capacity of cables. Uptown campus, primary electric master plan program study.
The united states national electrical code, table 310. Usamp prime software models all types of underground power cables pipetype, extruded, and solid paper. It addresses both steady state and transient thermal cable ratings. Pdf cable ampacity calculation and analysis for power. Practical power cable ampacity analysis velimir lackovic, mscee, p. Kerite power cable customer service 2038815305 cable overview kerite power cable in voltages from 46kv through 8kv for transmission applications. 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. 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. Overview of rules implemented in powertools, including nec and recommended industry standard practices. Fluent as the proper software in this field is used to generate and solve the problem.
As a cable ampacity analysis application, etap engineering software determines the cable current capability based on ieee, iec, icea, nec nfpa, bs, and. This rating has been determined by the nec national electrical code, which lists ampacity ratings for reallife installation examples. That is the quandry, if i use the 75% load factor, my 100% ampacity is much higher, thus i need to be satisfied i am not overloading the cable. Engineering data for copper and aluminum conductor electrical cables 102 hilltop road, ramsey, nj 07446 201.
Cymcap provides the option of performing cable ampacity calculations using dc current zero frequency. Ampacity calculation assumptions conductor material and voltage46kv aluminum conductor. The 69kv option is a new product for kerite, and as with the 15kv, has been added as a result of customer inquiries and demand. Cable sizing and its effect on thermal and ampacity values. Gridcablemax hv cable sizing software made for engineers by. Etap electrical engineering software offers a comprehensive set of cable current carrying capacity ampacity and sizing modules based on the following standards and guidelines. Crosslinked polyethylene commercial southwire southwires commercial team focus on store, hotel, office, casino, ar. Iec 60502 cable capacity calculations for power cables per iec 60502. 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. Determination of accurate cable ampacity ratings based on installation scenarios. Pdf cable ampacity calculation and analysis for power flow.
When selecting a cable, one must know its wire ampacity rating. Cable ampacity power system software and arc flash. Use of computer programs for calculation of underground cable ampacity software programs usually use neher mcgrath method for the calculation of the cable ampacity. Ampacity is defined as the maximum current carrying capacity of any cable. The underground products range from 5kv through 8kv. Practical power cable ampacity analysis ced engineering. Creating underground duct banks and inair installations. Kerite product catalog underground distribution cable and power cable. The load is a wind farm with a projected capacity factor of 40%, using the 24 hour time frame and collecting real time data from existing sites with a similiar wind regime the highest recorded load. All 4conductor values have been derated per 2008nec table310. The ampacity of underground power cable lines is limited by the maximal allowable temperature of the conductor.
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