Hi, i am hoping someone might be able to offer some opinions. The main argument against constructing underground systems is usually financial. This calculation also could be used to determine the selection of the cable size for the high voltahge hv cable and the conductor could be copper or aluminium. It helps you to shape up your technical skills in your everyday life as an electrical engineer. Or a large motor to be supplied, either at hv or via a transformer at lv, and a desire to avoid lamp flicker during motor starting. Powercad5 electrical engineering design software, cable. Jun 20, 2016 power cable current rating calculations software from lv to hv. Cable high voltage electrotechnik pty ltdelectrical.
Cablesizer a free web application for sizing cables to nec and iec standards. Eland cables supplies a comprehensive range of british, european and international standard high voltage hv cable. High voltage power cable current ratings electrotechnik pty. This excel sheet does the cable size calculation in three steps below. Along with the cable sizing calculation results, this section also displays the required cable sized, cable ampacity, percent of voltage drop, and percent of starting voltage if cable sizing options for the corresponding requirements are checked. British standard cables bs6622 and bs7835 are manufactured in voltages including 6. Gridcablemax hv cable sizing software made for engineers. Cable sizing, sustained current capacity bs 7671 wiring regulations, voltage drop clctr 50480, fault level and impedance iec 60909. Considering that a shock from a poorly insulated hv cable will most likely prove fatal, it is recommended to insulate them well unless the cable is located in a completely unreachable area. Software for calculations and diagrams of medium voltage electrical installations. Engineer friendly software for electrical contractors and engineers.
High voltage hv installations calculation trace software. Owning and maintaining the power lines connecting millions of homes across over 11,000 square miles, they operate part of the national grid along with the other dnos including sse, spen, wpd, enw and npg. The hv cbale size shall be base on the fault level on hv side. Electrical calculation tools is a set of 7 computer aided online tools designed to help you. This publication is a guide for the selection of cables and cable configurations to suit particular applications. The question of why all electric transmission and distribution circuits cannot be run underground to avoid the visual and other effects is often posed. Our builtin antivirus scanned this download and rated it as 100% safe. Their aluminium wire armour awa for single core cables and steel wire armour swa for multicore cables provide robust mechanical protection making these 11kv cables suitable for direct burial in the ground. No signups or logins required, just click below to start sizing to either nec or iec standards.
Calculation tools for low voltage electrical network. Load current, short circuit current carrying capacity, voltage drop. So in case of ht motor, the cable short circuit cap. Powercad 5 includes design methology and compliance checking with australian and new zealand standards asnzs 3000 and asnzs 3008. Lv and mv cables up to 33 kv with current capacity in accordance with bs 7671, era 6930 and iec 60502. Cable high voltage electrotechnik pty ltdelectrical calculations. I appreciate of your current website which are publishing my cable sizing ideas. Hv cables have an extremely high distancerelated energy loss. The required cable size is the largest size from shortcircuit, overload, and shock requirements. I want to submit the formulas of cable sizing to those persons which are searching here and there. Cable layout and system design the dimensioning of a high voltage cable system is always based on the specifications and demands of the project at hand. There also exists other offline software packages that include cable sizing for example from solutions electrical uk. The cymcap software is dedicated to the calculation of ampacity and temperature rise calculations for power cable installations. Hv cable sizing software in compliance with iec standards.
Impedance and voltage drop to iec 60909 and cenelec clctr. Cable calculation software mvhv specific linsey birkett joined 15012014 2 posts question. Powercad 5 includes design methology and compliance checking with australian and new zealand standards asnzs 3000. High voltage xlpe cable systems technical user guide. Electrical design, cable sizing and certification software. Jan 18, 2019 cable sizing is done based on three parameters. Information center tools applications catalogues library medium voltage. Amtech singlecable lies within office tools, more precisely calculators. The accuracy of the software provides increased confidence when upgrading power cable installations and designing new ones. Cable sizing methods do differ across international standards e. Produce one line schematics in minutes, select and calculate cable sizes, volt drop levels and system impedances.
Crater cable rater is a sophisticated cable ratings tool which enables current ratings of a wide range of thermally interdependent circuits to be calculated. Cable temperature is the actual temperature of the copper, not the ambient air temperature. Most of the major power systems analysis software packages e. Nexans easycalc is a cable sizing tool that will help you to determine easily the most adapted cable cross section. An example how to calculate voltage drop and size of. Display the timecurrent curves of 1 to 8 circuitbreakers.
Elek cable hv is the latest windows pc software suitable for desktop, laptop or tablet. Now, calculate the current that will be running in the circuit due. Electrical calculation tools schneider electric global. Cable sizing software select, size and manage your power cables using mycableengineering. The basic laws of electricity limit how physically long an underground cable can be. Ducab select ducab cable manufacturing company, high medium. The cable sizing calculator calculates the required cable size according to. Cable sizing, max demand, volt drop and conduit sizing. I have tried grid cable max and heard of an autralian project called cable calc pro. We also provide customised hv cable solutions designed around the applications and the project specific requirements.
We have a fully fledged application where you can size lv and mv cables up to 33 kv, current capacity in accordance with bs 7671, era 6930 and iec 60502 and with clear easy to read calculations and reports. Electrotechnik cable hv software transient, emergency and. I am submiting another voltage drop and cable sizing formula. Cable energy withstand based on the protective devices letthrough energy. For example if you are calculating the size of cable for a 1 kw single phase pump. 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. Calculation of thermal ratings for complex cable circuit installations. Ampacity computations for transmission, distribution, and industrial applications, george j. Dec 20, 2019 powercad 5 is australias leading electrical engineering design software solution for consulting engineers. Cable calculation software mvhv specific iet engineering. Powercad 5 is australias leading electrical engineering design software solution for consulting engineers. Cablesizer is an automated cable sizing and design calculation tool to iec and nec standards.
Next, find the cable size for the short circuit capacity of the system. How to calculate size of a cable for 11kv or 33kv line. Impedance and voltage drop to iec 60909 and cenelec clctr 50480. Lv cable software cable calculation cable ampacity.
Also, the software will perform selectivity checks between the hv and the downstream lv device 2. Current capacity to bs 7671, era 6930 and iec 60502. On high voltage circuits the prospective fault current and backup protection time is. For projects outside australia, powercad 5 supports iee, bs, cp5 and is india. Hv underground cable sizing jghrist electrical 29 oct 02 08. Cable short circuit capacity should be higher than system short circuit capacity at that point. Home information center tools applications medium voltage calculation. The reactance for multicore core cables is selected from the circular conductors column in from table 30 in. Calculate the load current from the load data available.
Five key factors to the correct cable selection and. How to calculate size of a cable for 11kv or 33kv line zxpress. This article examines the sizing of electrical cables i. High voltage xlpe cable systems techincal user guide brugg cables page 6 2. Specify the voltage and select the phase arrangement. Cable hv software transient module for emergency and. For cables in air the effect on the current rating of the following parameters is studied. Also, check out our blog for news and discussion on cable sizing. The following details are required for calculation. There is also complicated software that develops by abb that could be used to determine the fault current and cable size. It allows electrical engineers to use professional cad drawing software to design integrated systems in a fraction of the time normally required when creating the process by hand. Pds 14 high voltage cable selection guide scope and application 1 scope and application this publication sets out continuous ratings of common high voltage ac cables used by the australian rail track corporation.
Gridcablemax is a user friendly program that determines cable ratings with total accuracy. Ducab select ducab select was developed by ducabs technical engineers and it professionals to help customers select the correct cables size for lv circuits. Get access to premium hvmvlv technical articles, electrical engineering guides, research studies and much more. The voltage drop calculator calculates the voltage drop over a cable according to the australia and new zealand standard asnzs3008.
Cable sizing calculations for phase, neutral and earthing conductors are based on the following criteria. Etaps cable sizing analysis software can compute the size of the cables based on cable shortcircuit capacity to withstand the shortcircuit current. Also, if the job needs a lot of larger hv cable, it might be cheaper to buy a large quantity all of the same size, even if one length is thereby very oversized. Windows xp or later operating systems including windows 8 and 10. In case of lv system cable can be selected on the basis of its current carrying capacity and voltage drop but in case of mvhv system cable short circuit capacity is an importantdeciding factor. Cable sizing software that calculates optimal and cable sizes for phase conductors based on load flow, short circuit, or protective device calculation results. Hv cable size calculator free download as excel spreadsheet. This cable sizing calculation program allows you to calculate cable size based on electric motor minimum allowable starting voltage. High voltage systems 04 high voltage xlpe cable production since the introduction of polymeric. Modelling was performed using the commercially available software package called elek cable high voltage tm hv.
Gridcablemax hv cable sizing software made for engineers by. Ac and dc voltage drop calculator asnzs 3008 jcalc. Cable hv software new module for transient, emergency and cyclic cable ratings to standard iec 60853. Elek cable pro cable sizing and max demand software introduction duration. Motor starter type direct online, stardelta, softstart etc. Voltage drop in accordance with cenelec clctr 50480. Amtech singlecable can be installed on windows 7810 environment, 32bit version.
The reactance for single core cables is selected from the flat, touching column in from table 30 in asnzs 3008. Ducab select ducab cable manufacturing company, high. Cablesizer cable sizing calculations to iec and nec. But in practical situation, there are several derating factors which need to be considered. For projects outside australia, powercad 5 supports iee, bs, cp5 and is india standards. Gridcablemax hv cable sizing software in hv cable sizing software in compliance with iec temperature rise and cable losses of high voltage power cables under multiple scenarios and installation high voltage cables prysmian group. See also the full cable sizing calculator asnzs3008. Power cable current rating calculations software from lv to hv. I will be carrying out a lot of cable calculations ratings, pulling tensions etc.
Effects of mv and hv cable capacitance on operational limits. Now, we can consider these four points one by one and choose a cable which complies all these requirements. Electrical design software is a powerful tool that can automate all of this. Cable voltage drop should be less than defined voltage drop. Our cable sizing calculation has been here for some time. Feb 09, 2018 in case of lv system cable can be selected on the basis of its current carrying capacity and voltage drop but in case of mv hv system cable short circuit capacity is an importantdeciding factor. Caneco ht is a medium voltage private electrical network design and verification software package compliant with standards nf c 200 and iec 60909 and with its marine pack standard iec 663 it calculates the threephase and homopolar and determines the crosssections of the cables. Cable hv is software for the windows operating system. This may require unusual quantities or lengths, short production leadtimes andor technically challenging constructions. Cablesizer cable sizing calculations to iec and nec standards. Uk power networks is the distribution network operator responsible for the power lines across london, the southeast and east of england. The cable sizing calculator uses the resistance rc from table 35 in asnzs 3008 at 75c. During the electrical design electricalom acts interactively and indicates to the user useful.
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