I am working on a project that involves sizing cable for a mv voltage motor 600 hp, 2300v. Our mediumvoltage cable is manufactured with copper conductor constructions with a metallic shield of annealed copper tape, lead. Where there are many small motors or explosion proof motors in hazardous locations, a single msp at the motor control center is recommended. In three phase systems uo is u v3 the voltage of the cable must be chosen according to the maximum voltage um in normal working conditions, which must not exceed the rated voltage by more than 20%. Voltage drop in accordance with cenelec clctr 50480. The lockedout circuit may receive enough electromagnetic coupling from the energized cable to produce a combination of voltage and current that can be dangerous or even fatal. Tic produces a wide range of medium voltage motors ranging from 200 to 50,000 hp and 2300 to,800 v for countless industries and applications. No other drives feature the latest technologies that greatly enhance performance, efficiency, and safety. During the electrical design electricalom acts interactively and indicates to the user useful. Medium voltage products technical guide protection criteria for medium voltage networks. This will limit the surge voltage seen by the motor to the discharge voltage of the arrester. On threephase systems, it is a good rule of thumb that the voltage. Fault level withstand is calculated and cable size increased if necessary tip.
The number of current carrying conductors in a raceway. Prefabricated electrical systems integrated design and installation. The required cable size is the largest size from shortcircuit, overload, and shock requirements. Cable size calculations calculations based on motor horse power hp and specified current. The medium voltage section of the project can be drawn by the macros of the typical units of the unimix switchboard or by objects for more flexibility to pass to the low voltage section it is necessary to use the transformers when a low voltage section is not needed, the drawing can be completed with mv loads or motors introduction. Display the timecurrent curves of 1 to 8 circuitbreakers. Cablesizer is an automated cable sizing and design calculation tool to iec and nec standards. Furthermore, high voltage circuit breakers typically do not limit the fault current. Etaps cable sizing analysis software can compute the size of the cables based on cable shortcircuit capacity to withstand the shortcircuit current. Electrical design, cable sizing and certification software. Isbn 9529107285 second edition 2005 the motor guide basic technical information about low voltage standard motors. This concern applies primarily to motors and drives operated on 380volt v, 480v and 600v power systems. The cable sizing calculator calculates the cable size based on current rating, voltage drop and short circuit current according to iec 60364 and hd 60364 standards. Up to and including 36 kv nexans where could cables.
How to calculate voltage drop and size of electrical cable. Most of them are freeware, some requires registration and some are shareware. Per nec, flc x 125% is required to calculate awg size. This cable sizing calculation program allows you to calculate cable size based on electric motor minimum allowable starting voltage. Our entire product line delivers virtually perfect current and voltage waveforms to allow the use of standard or existing motors and motor cables. Doc is a tool that draws and calculates lv and mv singleline diagrams for the. Breaker amperage is determined by the hp, voltage, phasing,and type of motor used. Cable sizing calculations for phase, neutral and earthing conductors are based on the following criteria. Load cables or feeder which is supplying more than one motors other loads, shall have an ampacity not less than 125 % of the fullload current rating of the highest rated motor plus the sum of the fullload current ratings of all the other motors in the group, as determined by 430. How do you size a circuit breaker for a motor load. Mv 500 1c cu 15kv epr medium voltage cable southwire mv 40 1c cu 15kv epr.
Medium voltage ac drives abb is a leading global supplier of medium voltage drives in the range of 250 kw to more than 100 mw. Available for low 1 kv and medium voltage 58 kv applications, 3m. Finding their use in power circuits in open air, conduit, or duct a variety of constructions and types of medium voltage power cable are available based on industrial application needs. Electrical calculation tools schneider electric global. Doc the abb design software that calculates selectivity the abb. Cable size calculations electrical engineering portal. Home information center tools applications medium voltage calculation. Voltage minimum size awg 5 kv 8 8 kv 6 15 kv 2 25 kv 1 35 kv 10 conductor size awg kcmil 2001 5000 v 5001 35000 v. Hereby the use of medium voltage motors can be a cost optimising solution. Cablesizer cable sizing calculations to iec and nec. It considers current rating, voltage drop and short circuit current. Given the nature of cable sizing, it can be difficult to get the necessary calculations into a spreadsheet, leading to technical inaccuracies, approximations and lack of validation. We provide a complete line of cables for variable frequency drives vfd in both unarmored and armored designs as well as in many power. Sep 12, 2014 download medium voltage cable neutral sizing calculator and enjoy it on your iphone, ipad, and ipod mv cable size calculation mv cable size calculation.
These multiplications factors can be applied to the calculated ampacity as well. The sizing of low voltage cable covers most of the common nonarmored cable installations for utility, domestic, commercial and industrial systems. There is usually a motor code stamped on the motor itself. Therefore, more energy is stored, resulting in more overshoot voltage. Our mediumvoltage cable is manufactured with copper conductor constructions with a metallic shield of annealed copper tape, leadfree insulation, and a flame retardant pvc jacket. This calculator will also give you motor amps and recommended breaker size, starter size, heater size and conduit size. Medium voltage motors motors drives toshiba international. Medium voltage motors for high output applications. This post gives some insight into how the tool works, the calculations carried out and how to use it. The module provides a complete and accurate representation of the distribution system. Partial reprints or reproductions are permitted subject to full acknowledgement. Information center tools applications catalogues library medium voltage.
Medium voltage motors cable terminations maximize your uptime. Mounting ac ad h ha hd l le shaft extension key size frame aaa ab b c k m d e ee ged f no. These spreadsheets below will make your job much more easier, alowing you to shorten the time used for endless calculations of cables, voltage drop, various selections of circuit breakers, capacitors, cable size and so on. Motor starting and its associated problems are wellknown to many people who have. But in practical situation, there are several derating factors which need to be considered. Medium voltage products technical guide protection criteria. Conduit, cable and wire management cylinders differentials and traction. A higher voltage allows a lower current which enables the use of smaller cables to supply the application. To calculate awg size, three factors must be known. These cable solutions include nonshielded type mv90 and copper tape shielded type mv105 designs used extensively in pulp. Mar 02, 2014 electrical design without appropriate software and tools is impossible to imagine. With the cyme software, medium and low voltage system losses can be calculated accurately and overloaded equipment can be identified to help you plan and improve the system for the future. Medium voltage adjustable speed drives motors drives. In 1980 tic began manufacturing motors in houston, texas and since then has developed a proud tradition of producing some on the most reliable, robust motors in the market.
Guide to medium and high voltage motors when your application requires high output, it can be beneficial to increase the voltage in order to keep a low current. Electrical calculation tools are based upon schneider electric ecodial electrical network calculation wellknown software. The voltage drop from transformer to the load lighting, motor should not exceed 5%. In three phase systems uo is u 3 the voltage of the cable must be chosen according to the maximum voltage um in normal working conditions, which must not exceed the rated voltage by more than 20%. Cable sizing software voltage drop software etaps cable sizing module provides optimal and alternative cable sizes for load current, voltage drop, in this cable sizing calculation voltage motors voltage drop calculator for single and 3 phase voltage drop calculator. Transformer primary and secondary circuit sizing voltage drop motor starting voltage dip short circuit analysis lighting levels grounding in substations where step potentials are of concern harmonic distortion analysis cable pulling calculations generator capability motor starting. But there is no such a table for 2300 v and 4000 v motors. Voltage drop is calculated and cable size increased if necessary 3. Motor etap cable sizing module provides one cable size smaller than up to and including 36 kv nexans. For best protection, one msp should be placed at each medium voltage motor or generator.
Specify the voltage and select the phase arrangement. The nec and installations over 600 volts iaei news magazine. Voltage drop voltage drop amperemeter x length x current. Insulgard also reduces the level of expertise required to. Medium voltage cables, or mv cables, is a category defined by the international electrotechnical commission iec as having a voltage rating of above 1kv up to 100kv. Large and high voltage motors slip ring motors aeeqaejs advantage guardian range high temperature resistant motors minicon palm drive.
The cable sizing calculator calculates the cable size according to asnzs 3008. Medium voltage drives sinamics electric drives simply. Cyme power engineering software and solutions identify the right type of cable for your low voltage installation the low voltage cables are those with a voltage rating equal or less than 1kv. Etaps cable sizing analysis software can compute the size of the cables based on cable shortcircuit capacity to. Iec 60364 electrical installations for buildings, is a harmonized standard that has been adopted by many countries in the world.
Selection and erection of electrical equipment wiring systems. When you are working on lv motors you can always find the current on the nec table 430. Electrical software design tools arduino hack space. Doc the abb design software that calculates selectivity. Electrical calculation tools is a set of 7 computer aided online tools designed to help you. The sinamics perfect harmony gh150 raises the standards for transformer flexibility in cellbased medium voltage drives. Calculate the voltage drop of a defined cable and check the maximum length. Electrical technology and industrial practice 12,379 views 22. Before, this software didnt considered the voltage drop on the bus for cable sizing due to source impedance, but recently we have added an extra module for this case. This website provides a wire size calculator, voltage drop calculator, wire. No download needed, direct access from your web browser.
Toshibas medium voltage adjustable speed drives are some of the most innovative drive offerings to date. Calculation tools for low voltage electrical network. Available in open drip proof, weatherprotected type i and ii, totally enclosed fan cooled, and totally enclosed airtoair cooled enclosures, toshibas medium voltage motor offerings range from 100 to 50,000 hp and 2300 to,800 v. Medi ltage single conductor 5 35 mv cable copper mv cable aluminum nec table 310. There does, however, remain some ambiguity over where the medium voltage cable band begins and ends, depending on the countries, the standard setting bodies, and the type of. Motor starter type direct online, stardelta, softstart etc. Cable energy withstand based on the protective devices letthrough energy. Motor insulation not designed to protect against this voltage overshoot may fail prematurely. On this page you can download professional software for electrical design, mv and lv network and photometric calculations, voltage drop and short circuit calculations etc.
Abb supplies medium voltage variable speed drives for a wide range of applications in the cement, mining and minerals. Medium voltage fuses erated fuses rrated fuses littelfuse. Hoyers technical manager provides a quick introduction to medium and high voltage motors, and when they are the right choice for the job. Medium voltage motor circuits rrated medium voltage fuses locked rotor current 600a thermal overload relay jck 9r contactor m motor f. No signups or logins required, just click below to start sizing to either nec or iec standards. Network analysis software, which overcoming any technical limitations, requires a higher level of technical input, can be timeconsuming and often the cost is. Our cable sizing tool is one of the more popular tools on the site. Medium voltage fuses offer a much wider range of system voltages, thereby resulting in a correspondingly large number of fuse voltage ratings.
Cyme power engineering software lowvoltage secondary. The user can size cables by specifying constraint based on maximum allowable cable voltage drop in percent. Electrical design tools electrical design without appropriate software and tools is impossible to imagine. Operating current a, 125% current per nec a, zero length cable size, acceptable voltage drop v, actual. Calculate the cross section area of cables and build a cable schedule.
As a result, general cable offers a wide range of medium voltage industrial cables from 2. For questions, contact our technical support and engineering services group at 800tecfuse 8008323873. Instead, the voltage applied across the lead increases. Medi ltage single conductor 5 35 mv cable copper mv cable. Cable sizing calculator iec 60364 and hd 60364 jcalc. Consider, for instance, two inverterto motor cables traveling together for a good distance in cable tray. Eaton s cyme low voltage cable sizing module calculates the cable size at a given location on the network according to any one of the following standards.
Transformer primary and secondary circuit sizing voltage drop motor starting voltage dip short circuit analysis lighting levels grounding in substations where step potentials are of concern harmonic distortion analysis cable pulling calculations generator capabilitymotor starting. Lv and mv cables up to 33 kv with current capacity in accordance with bs 7671, era 6930 and iec 60502. By allowing for different transformer specifications such as cooling, size, pulse number and primary voltage it can accommodate site conditions that require remote placement of the transformer, either inside or. Cyme power engineering software and solutions low voltage. Selection of the protection system and relays depends on and is correlated with the plant characteristics, type of industrial process and its service continuity requirements, with the status of the neutral, characteristics of the machines, levels and duration of the fault currents, etc. Lv motors we reserve the right to change the design, technical specification and dimensions, without prior notice. Hwc is a leading national provider of medium voltage mv power cable products for the electrical distribution sector in ranges from 2. We have a fully fledged application where you can size lv and mv cables up to 33 kv, current. Also, if it is a motor load, the voltage drop for motor starting has to be checked. It would be a more useful spreadsheet if you can actually size the loads for a residential home.
Cable sizing software cable sizing calculation etap. Insulated bundled overhead conductors torsade 1220 24 kv xlpe technical information formulae. The typical medium voltage cable construction starts with the conductor just like low voltage conductors, but this is where the similarity ends. The tool enables cables to be sized in compliance with bs 7671 the iee wiring regulations and by implication iec 60364. These drives are designed and manufactured in houston, texas. To find out more about how the cable sizing tool works, please see. All powerflex 7000 medium voltage drives adhere to the applicable standards from nec, iec, nema, ul and csa. Jun 22, 2016 cable sizing calculationhow to select cable sizeelectrical technology and industrial practice duration. But it is also possible to use doc as an electrical calculator for support in cable sizing, voltage drop calculation, shortcircuit calculations, device selection, circuitbreakers trip unit setting, cable protection verification, motor coordination selection and all the daily needs of a professional of the electrical sector. On the medium voltage cables, a thin semiconductive layer is extruded onto the conductor to fill the voids between the strands and make a voltage stress transition to the insulation layer. Voltage the fuse must have a voltage rating equal to or greater than the normal frequency recovery voltage which will be seen across the fuse under all conditions.
Electrical tools ms excel spreadsheets this section is dedicated to tools every electrical engineer can use in daily work. The lifetime is a critical element with medium voltage motors and the range is therefore tested. Medium voltage products technical guide protection. Online eliminates the inaccuracies of offline tests. Tough challenges call for innovative solutions, and general cable is your worldwide source for new products and a wide range of industryleading industrial cables. Voltage minimum size awg 5 kv 8 8 kv 6 15 kv 2 25 kv 1 35 kv 10 nec table 310. Our etap software contains the cable and motor moudule also, but we have an excel based internal software for cable sizing and other electrical activities. Cable sizing software select, size and manage your power cables using mycableengineering. Uo is the rated voltage between conductor and screen or outer metallic protection. The motor wire size calculator will calculate the proper wire size for a given motor hp and voltage. Guide to medium and high voltage motors a quick introduction. Each csa and nrtl certified kit contains everything you need to make three splices. 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. Generators motors switchgear unit substation drytype transformers bus duct cable connections continuous eliminates the chances of failures occurring between periodic test events.
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