Home / Download Center / Electrical MS Excel Spreadsheets (Calculations of cables, voltage drop etc.)

Electrical tools (MS Excel Spreadsheets)

This section is dedicated to tools every electrical engineer can use in daily work. 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.

Electrical Tools - MS Excel Spreadsheets
Electrical Tools - MS Excel Spreadsheets

Spreadsheets are mostly developed by expirienced electrical engineers and programmers (thank you mr. Jignesh Parmar!) and by well known manufacturers of electrical equipment. They all really did an awesome job, you must admit!

Just to mention that all calculation spreadsheets are free for download! ;)

Electrical calculations (MS Excel Spreadsheets) New Download
Motor Starting Calculation Spreadsheet (by Hemant Kashikar) star
Cable Designing Program Updated
Calculate Home Electrical Load & Electrical Bill Updated
Calculate Bus Bar Size and Voltage Drop Updated
Calculate Electrical Load and Energy Consumption of Panel Updated
Calculate Electrical Load of Panel Updated
Calculate Insulation Resistance Value Updated
Calculate Number of Lighting Fittings and Lumen Output Updated
Calculate Size of Battery Bank and Inverter Updated
Calculate Size of Solar Panel, Battery Bank and Inverter Updated
Circuit Breaker Tripping Settings Updated
Conduit Size Selection Program Updated
Design of Earthing Mat for Sub-Station Updated
Selection of MCCB, ELCB For Main-Branch Circuit Updated
Selection of fuse and setting of instant short circuit tripping of CB Updated
Short Circuit Current Calculation at Various Point of Electrical Circuits (Isc) Updated
Size of Capacitor For Power Factor Improvements Updated
Fault Current Calculation star
Electrical Safety Program Arc Flash Calculator
E-Feeder and Cable Calculator
SquareD – Selecting capacitor size
Voltage Drop Calculator – Albany Technical College
Cable size calculations based on motor horse power (HP) and specified current
Voltage Regulation Percentage of Small Distribution Line
Calculate size of air conditioning for room
Residential Load Calculations
Pump Efficiency Calculation Tool
Transformer Fault Current Calculation
Powerline Voltage Drop Calculation star
Electrical calculations (MS Excel Spreadsheets) New Download
Power Factor Correction Calculation star
Calculation of Touch Voltage and Ground Current star
IDMT (Inverse Definite Minimum Time) Relay Calculation star
Calculate Size of Diesel Generator star
Electrical Pole’s Trasverse Load Calculation New star
Electrical Engineering General Formulas New
CO2 Savings Calculator New
Available Fault Current Selective Coordination
Power Factor Table Calculator New
NEMA Motor Data Calculator star
Estimated Voltage Drop Calculator star
IEC Motor Data Calculator star
Calculation of Size of Transformer, Fuse and Circuit Breaker star
Calculate Size Of DOL and Star-Delta Starter Components New star
Calculate size of transformer and voltage due to starting of large size motor New
Power Quality Solution Selection Spreadsheet New
Spreadsheet For Calculating Size Of Motor Pump star
Spreadsheet For Calculation The Required Number Of fixtures And Illuminance Level star
Lightning Protection Risk Assessment Calculator/Spreadsheet
Load Listing, Calculations and Generator Sizing Spreadsheet
Spreadsheet for Transformer Losses Calculation
Motor Voltage Drop Calculator (Spreadsheet) star
Spreadsheet to calculate the size of neutral earthing transformer star
Spreadsheet to Calculate Short Circuit Capacity of Diesel Generator Synchronizing Panel New
Power factor correction calculations for power system New star
Distribution Transformer Calculations New star
Calculation of electro magnetic field (EMF) around T&D overhead lines New star

SEARCH: Articles, software & guides

Premium Membership

Premium membership gives you an access to specialized technical articles and extra premium content (electrical guides and software).
Get Premium Now ⚡

Page edited by E.C. (Google).


  1. subhash
    Oct 13, 2018

    Best and nice work
    keep it up

    but a small correction require in cable size calculation ( excel ) sheet in 3.5 X 50 sqmm where the result is wrong
    by subhash from

  2. Adil Agha
    Oct 06, 2018

    Great effort to organize EE info at one place, future target should be to evolve projects group.

    Oct 04, 2018

    Thank you a lot for sharing.

  4. Vincent
    Sep 25, 2018

    Firstly, I highly appreciate your contributions. Thank you so much!

    Secondly, I have checked all the Excel sheets, I saw that most of them were protected, so I could not see the formulas, which I want to recheck. Can you help me to unlock them??

    • khan
      Oct 05, 2018

      sir I want to unlock the spreed sheet as most of them were locked and I cant change it according to my use can u give me pas or how to unlock it

  5. Qaiser Iqbal
    Sep 12, 2018

    These excel worksheets are very useful for design engineers. Thank you for sharing free of cost on purpose knowledge for everyone.

  6. Emmanuel
    Aug 28, 2018

    Very nice of you sir.

  7. Nguyễn Hoàng
    Aug 01, 2018

    Thank for your support…

  8. Ahmad Wahid
    Jul 28, 2018

    thank you, very useful.

  9. samer
    Jun 24, 2018

    that’s very helpful… great

  10. samuel.ayalew
    Apr 27, 2018

    Thanks a lot this is a great help for professionals and trainers. A real quality work with lots of consideration for fellow professionals in the stream. you are setting a higher example. Once again Thank you very much.

    Apr 20, 2018

    Dear EEP Team,
    you are doing a wonderful job by making available such calculations for every day use by practicing engineering professionals, cs nambisan

  12. Shaddai
    Mar 10, 2018

    Thank you so very much.

  13. Mounir
    Feb 17, 2018

    Thanks a lot.

  14. Prawin
    Feb 11, 2018

    Thanks a lot. Very Very Helpful

  15. Khaled Ellithy
    Jan 25, 2018


  16. Tawa Great
    Dec 19, 2017

    Hello team EEP

    As a junior power systems engineer, which coding language would advise me to learn among:
    Front-End Web Development
    Website Design
    Android Development
    iOS Development

    Thank you

    • Emin
      Jan 14, 2018

      Do you know anything about those languages? They are all completely different. Front-End Web development is not even a language; it’s an area, just like distribution systems engineering.
      I suggest you research a little bit before asking a question like this.

    Dec 16, 2017

    i want to buy a lap top for scada system

    Dec 14, 2017

    Hello sir,
    I want to know that, is there any calculation table for transformer firewall protection?


  19. choi85
    Dec 12, 2017

    Thanks, very much..

  20. Raphael Sangrador
    Nov 10, 2017

    Thank you.

  21. jayaraj.k
    Nov 09, 2017

    Dear All,

    I need to give the justification for selected cable 2 Runs of 185

    this cable selected for transformer solid ground conductor.

    Transformer details.
    4687 KVA
    Dyn1 vector group

    Whether this cable is sufficient or not. please clarify with calculation.

    Thanks in advance


  22. Pisit
    Oct 21, 2017

    Nice solution

  23. Atiq
    Oct 10, 2017

    anyone have Siemens software (Starter v 4.3 for Siemens Drive(VFD) G120).please upload anywhere and send me link.

  24. Reda Mostafa
    Aug 30, 2017

    Please I like to calculate the required number of earth rods for substation mat specially in the preimeter
    Thanks in advance

  25. Carlos Espinoza
    Aug 15, 2017

    Thanks to Mr. Michal Liszka for the Excel EMF calculation.Do you know if this spreadsheet gives the electrical gradient of the conductors? or with some minor modification of the macro?

  26. Michael
    Aug 14, 2017

    Thanks… Thumbs Up

  27. Mirwais
    Aug 05, 2017

    Thanks a lot, Very usefull

  28. Mohammad reza Amirahmadi
    Jul 17, 2017

    Hi. Thanks, very usefull

  29. Prosper Kalu
    Jul 12, 2017

    God is going to bless and keep all the people doing this great work to make this world a more comfortable place. God is also going to help us in Africa to also take part in this great improvements. kudos to you guys.

  30. asrizal basir
    Jun 21, 2017

    Hi senior,
    I am looking for software for mp920 yaskawa plc,and cable data for programing
    We have problem with my machine and we must solve that problem.
    Where i am to get the software and cable data to connect to my pc
    Tq all

  31. QVN
    Jun 17, 2017

    Thanks a lot. very useful

  32. nabi
    Jun 15, 2017

    I need Electrical AutoCAD or same software for design of electrical schema please send me link of

  33. TOLBA
    Jun 10, 2017

    thank you very much sir

    May 31, 2017

    Thank you very much.. It helps a lot

    Do we also computation, for Transformer single phase dry type (consumption with out load).
    Some say is negligible but waste of energy.

  35. Mohammed AbuRayya
    May 10, 2017

    Thanks a lot.

  36. anand
    Apr 12, 2017

    Please provide EXCEL sheet for following CT calculations
    One minute Power Freq. 70 kV & 28 kV withstand voltage (rms),
    Lighting Impulse withstand Voltage
    System fault level Rated dynamic withstand 62.5 Current (KA rms)

  37. peter malus
    Apr 03, 2017

    thank you very much. such information is very useful to me as a young electrician.

  38. Mohmmad Thapet
    Mar 23, 2017

    Thank you you helpful best regard

  39. Zorica Popovic
    Mar 14, 2017

    The best site ever!! Thank You very much for Your effort!!!

    • Faizan
      Mar 20, 2017

      you are welcome.

  40. Tarqiullah
    Mar 01, 2017

    Thank you of your work in Electric Engineering.

  41. hoss
    Feb 27, 2017

    Thanks a lot for your large Heart to share this useful knowledges.

  42. ashenafi
    Feb 23, 2017

    THANK YOU!!!!

  43. Hassan
    Feb 04, 2017

    Thanks a lot

  44. kiran Kumar Avadhanula
    Feb 02, 2017

    I have a doubt that we have a metal chimney of 63.5 mtrs height does we have to install air terminals and horizontal terminals to connect to ground for lightning protection or we can simply connect the chimney base to earth grid.

  45. Sridhar
    Feb 01, 2017

    One of the best knowledge sharing website. Great job by Edvard and his supporting team.

  46. Thabiso Boase
    Jan 19, 2017

    the best site,

  47. Ashraf Zaher
    Nov 30, 2016

    Thank you very much

    Oct 17, 2016

    Good day, do you have a spreadsheet to estimate cooling/heating for control panels?

  49. mohamed
    Sep 26, 2016

    Could you please send to me all sheets because register now not allowed

  50. saman
    Aug 17, 2016

    Thank YOU very much, All of calculation is so Perfect . . .

  51. Ismaeil
    Aug 01, 2016


  52. Vigneswaran
    Jun 24, 2016

    Dear Palmer,
    I downloaded some of your excel sheets, but its not opening as I am using MS office 2013, is that a problem or your excel sheets only work with previous version of office. kindly reply.
    Thank you ,

    May 12, 2016


  54. Pal
    May 09, 2016

    Sincere thanks and my appreciation to this wonderful forum.

  55. mouaz mohamed
    Apr 28, 2016

    thanks allot , appreciation to this wonderful forum

  56. Aditya Vyas
    Apr 25, 2016

    Thank you so much for the organised sheets. it really is helpful.

  57. Asst. Prof. Dr. Emad Kamil
    Apr 20, 2016


    • Pablito Ortega
      Sep 14, 2016


      I’am Mr. Lito Ortega, i’m here in New York working to Delco Electric Co. as Electrical Designer. Where are you working now sir Emad. Please reply to my email at

  58. Bojan Petreski
    Mar 26, 2016

    WOW…. I just love you… there, I said it :-)

  59. Ricardo
    Mar 17, 2016

    what is X´mer?

    • K P Kesavan Nair
      Feb 17, 2017

      X’mer is short for Transformer.

  60. anwer
    Mar 16, 2016

    thank u this is very helpful

  61. SERGIO sds
    Mar 10, 2016

    Thanks, very usefull

  62. Nasser .M
    Mar 03, 2016

    Thank you very match this was really very useful in the engineering design job . ,

  63. hazir
    Jan 11, 2016

    It’s amazing thank you so much sir…

    Nov 10, 2015

    with regards to all of u members

  65. Ramzi
    Oct 24, 2015

    Thank you for his wonderful work, they have been useful to me. Is it possible to provide me the password to modify the excel file. Regards,

  66. Essraa
    Aug 30, 2015

    Dear Gents,

    I have a project which I need to size a Power Control Center & Transformer for motors load driven through Variable Frequency Drives.

    Could you advise how to size the feeders of the PCC for each motor+VFD knowing that each VFD has an overload capability 1.5 times rated current for 60secs.

    Thanks in advance.

  67. khaled
    Aug 15, 2015


    thanks a lot they have been useful to me

  68. Pankaj Desai
    Aug 13, 2015

    Thanking you Mr. Jignesh Parmar and others for sharing wonderful, useful and data sheet and spreadsheet.

  69. Vikas Khengre
    Jul 17, 2015


    I need ups sizing Calculator. please mail me if you could provide me.

    Your help regarding on this will be very much appreciated.


  70. Bryant
    Jul 14, 2015

    A quick reference website for wire size and circuit protection calculations:

  71. Harish
    Jul 06, 2015

    This is very HELP FULL for us , I am very Thanks to You sir, I Learned many thing from this site, Thank you so much.

  72. @st175
    Jun 25, 2015

    Hi, can you please help me with writing the code for calculating switching losses in an IGBT with unity power factor.I m suppose to use time slicing technique and estimate losses or switch state at 1000 time instants.

    Can you help?

  73. MD.Mohitul Haque
    Jun 25, 2015

    This was very helpful,thanks.

  74. Rami
    Jun 23, 2015

    Is there a link to download all the spreadsheets, instead of one by one? Thanks

  75. nikhil
    Jun 19, 2015

    please send me the spreadsheets

  76. Ravikumar
    May 23, 2015

    Dear Team ,

    I am unable to download the cable designing program MS EXCEL Spreadsheet . When I am clicking the above link ,the file is not coming .

    Can you pls help me to download .

    With Regards,

  77. mohamed
    Apr 15, 2015

    thanks a lot for this support to my new challenge work :)

  78. pradeep
    Apr 12, 2015


  79. sathishchowdary
    Mar 27, 2015

    Dear Sir, I want how to select relay for a electrical usages.

  80. Tesfay Gebre
    Mar 25, 2015

    I really appreciation for your sharing a knowledge us. But I have question how can I access the resource because the MS excel spread sheet is read only?

  81. saravanan
    Mar 25, 2015

    Dear sir , can you provide me a spreadsheet to calculate harmonic . thank you.

    • Farhad Kohestani
      Oct 11, 2018

      You can find one in ABB site. Just Google harmonic estimator ABB group.

  82. omar
    Mar 04, 2015

    Dears if there Excel spreadsheet to calculate reactors size kindly provide me

    thanking you

  83. Pravin Sawant
    Feb 13, 2015

    thanks for sharing … kindly provide the password or keep it open sourced if you really want to share you knowledge.. because it is difficult to get the the formulae behind the calculation.

  84. Sumit
    Feb 13, 2015


    I would be very happy if you can work upon and include excel tools for railway electrification engineering and estimation including QS.

  85. Agustin Laez
    Jan 24, 2015

    Please check the Excel Spreadsheets, Calculate size of transformer and voltage due to starting of large size motor,the cell E33 not working, excuse me english, no is very good.

    I speak spanish


  86. SM
    Jan 17, 2015

    It’s Cool!!!

  87. Kristoffe Russel Carlos
    Jan 09, 2015

    can you provide me spreadsheet to calculate the sag and span and tension for transmission line please…thank you so much!

  88. trevor chandass
    Dec 26, 2014

    can you please provide a calculator to size transformers where three single phase transformers are used to create a full three phase or open delta bank with the measured phase load current as the inputs?

  89. tommy
    Dec 21, 2014

    please sent for me password unprotect file excel if can

  90. Kazem
    Dec 10, 2014

    Calculated filter harmonic and filter D teuned
    Thank you

  91. Md Mosharaf Hossan
    Dec 05, 2014

    How i wll be able download excell sheeet

  92. Dimitrios Chouliaras
    Dec 02, 2014

    hello guys, im interested in calculate proper diesel generators for industrial projects

  93. kazem
    Oct 09, 2014

    Hi, thanks for the very good Excel files to calculate file requests Series Inductors which are industrial drives

  94. mohd azharuddin
    Oct 02, 2014

    Dear Sir,

    i am working on calculating Rct of current transformer please help me how to calculate this


    Aug 26, 2014

    Hi guys,
    i like the discussions in this wonderful forum.

  96. Nagendra
    Aug 18, 2014

    I need the methods to calculate and select the proper size of XLPE cable for high voltage system. Can anybody help me providing the spreadsheet to select the proper size of XLPE cable for High voltage like (11-33-66-132kV) system.

  97. Mubeen
    Aug 18, 2014

    Hi.. I m trying to download MSCEXCEL spreadsheets on my android phone but it struck on box page and nothing happens when I press download button .. I also have installed box app but not working…

  98. haradongan pasaribu
    Aug 16, 2014

    I am interested in electrical software/ CD file designing for MV/LV circuits. can you guide me on that?

  99. Shine
    Aug 14, 2014

    I want Program Calculation for ups sizing…and ups spread sheet…

  100. Mohammed Yousuf A
    Aug 14, 2014

    Great job Mr Parmar, very helpful information in the site. nice….

    Aug 11, 2014

    I NEED MONTHLY,DAILY Grid Availability – Seet plz help me

  102. Lars
    Jul 30, 2014

    Very nice spreadsheets. Anyone got one for calculating generator incomer CT?

  103. HARISH
    Jul 29, 2014

    Thank you very much sir…..
    really really thanks

  104. surasitw
    Jul 15, 2014

    I want Program Calculation .

  105. jafari
    Jul 12, 2014

    you are the best
    thank you veryveryveryvery veryveryveryvery much

  106. rijvan
    Jul 12, 2014

    I ll recomend this site for all engineer who never stop learning..

    I m feel lucky to visit this site

    Jul 03, 2014

    Thank you very very much .

  108. dehghani
    Jun 29, 2014

    Thanks a lot………..

  109. shayesteh
    Jun 29, 2014

    Thank you verryyyyyy mach

  110. vivek sharma
    Jun 18, 2014

    I want to add some excel tools which can be useful in numerical relay testing. such as Delta connection counting, unbalance (NPS, PPS, ZPS) counting, all type power & energy calculations etc.

    • Edvard
      Jun 18, 2014

      Great Vivek! You can send your spreadsheets to office/AT/

  111. John Lovel
    Jun 12, 2014

    Really g8t Efforts and Thanks alot.

  112. Do Duc Thai
    Jun 11, 2014

    Please give us the password to use these tools.

    Thank you very much.

  113. sun
    Jun 08, 2014

    required 132 KV transmission losses calculations

  114. Jermaine
    Jun 07, 2014

    This is a wonderful and very helpful thing that you have done. Do you have plans to do a medium voltage motor calculation sheet?

    Jun 04, 2014

    Im very glad tha you post this helpful and very usefull computation

  116. sudhir
    Jun 03, 2014

    great content for electrical engineers, please remove the protection for the files, we want to utilize it

  117. thank from your information
    May 20, 2014

    good information

  118. ZISHAN
    May 17, 2014

    All the excel sheets are password protected. How to remove the password

  119. Harrison U. S
    May 04, 2014

    I really wanna appreciate your support and help to electrical engineers all over the globe, your really a great source of help cos much time have been saved with the help of your spreadsheets. I wanna say thanks and heaven blesses you guys real good.

    Apr 07, 2014

    I am Electrical engineer in Ethiopia. My interest is to be the member of number one 1 Electrical engineer in the world.

  121. chris weche
    Apr 03, 2014


  122. Ayo
    Mar 25, 2014

    You guys have really done a good job. Having these spreadsheet handy for a rough estimate saves time a lot.


  123. Prashant Baldawa
    Feb 05, 2014

    Thanks EEP. Your articles are worth reading. Simple yet an insite to a many technical facts which we deal with on conitnual basis.

    Do you have any article on the autosnchronization scheme and its advantages/disadvantages.

    Thanks in advance.

  124. aruel
    Jan 26, 2014

    Thanks EEP for your generosity! I got all the spreadsheets almost 45 for free. a very helpful docs.
    God bless!

  125. A.shiraj Ahamed
    Jan 10, 2014

    I can’t download this software. But this is very important and very useful for all technical persons

  126. umut
    Jan 08, 2014

    İ cant download it

    • Edvard
      Jan 08, 2014

      Please elaborate… cannot help according to ‘I cant download it’ ;)

  127. Yadagiri.Y
    Jan 03, 2014

    Pls, share…..!

  128. Ronald
    Jan 03, 2014

    Dear Sir,

    how to down load this?? thanks


  129. Ramnik
    Dec 15, 2013

    could not use the Home Electrical Bill / Energy Consumption / Load Calculator
    it requires password the cells are protected. Can you send me the password PLEASE!

    • Edvard
      Dec 15, 2013

      You can use this spreadsheet without any problem, but if you want to edit formulas and unlock the cells, you will have to purchase this spreadsheet.

      • Ramnik
        Dec 15, 2013

        but sir i cannot edit the “total electrical load” cell…
        plz help

      • satish korgaonakar
        Jan 01, 2014

        Any spead sheet which we downloads from this website ask for password , You replied we need to purchase the same , so tell me wats the price n wats is the procedure to do the same

    Dec 12, 2013

    Dear sir,
    Please help me sir i am not able to download the Excel sheet details like voltage drop calculation, elrctrical formulad etc.,

    • Edvard
      Dec 12, 2013

      Everything is available for free download, I don’t see any problem ;)

  131. Romel Bacay
    Dec 11, 2013

    Its awesome. Thank you very much for the references ..Pls. dont be sate to share your knowledge. Go will bless you.

  132. S S A
    Dec 11, 2013

    Please include the checklist for installation of electrical items (DBs/ Panels / Transformers / DG/ ACB etc)

  133. Pankaj Rane
    Dec 05, 2013

    It’s really very helpful , thanks a ton!!!!

  134. Arulanandan S
    Dec 04, 2013

    not available for down loading

  135. pd1986
    Nov 29, 2013

    files are not downloading from mobile please help

  136. oynotna
    Oct 25, 2013


  137. keshrimohit38
    Oct 09, 2013

    Awesome… Hats off to all of them … :)

  138. shergill
    Oct 06, 2013

    what is the password sir

  139. mk_sanaye
    Sep 27, 2013

    the information and softwares are really usefull but download links in doesn’t work correctly and server doesn’t respond, please correct them
    thanks for your efforts

  140. IMI
    Sep 17, 2013

    Very important information that to free. May ALLAH (There is no god but allah) bless you.

  141. Rukhsar Ali
    Sep 08, 2013

    Its my pleasure to be here & i am thankful to you for sharing such information.
    Its too much helpful

  142. quochuy
    Sep 04, 2013

    Thank you very much for your help…

  143. sivapacr
    Aug 22, 2013

    Thanx a lot sir for the great work.

  144. Adem1
    Aug 14, 2013

    Thank you very much for your efforts, it’s really nice job,

  145. trinhminhnhat
    Aug 10, 2013

    thanks so much for ur non-profit work!im grateful for that and dont know how to give a thanks!:(

  146. aakifnouman
    Jul 23, 2013

    You made the life easy thankyou

  147. afk
    Jul 20, 2013

    Suggest any method to design and sizing of control/switch gear panels.

  148. Abdelrazek
    Jul 12, 2013

    Dear Sir;;
    thank you very much for your efforts, it’s really nice job,
    but I want to ask you to put the standards you have used, and pls put the full meanings of the abbreviations you have used.

  149. sat07babu
    Jul 09, 2013

    nice work congrats ….

  150. THIAGO
    Jul 04, 2013


    Thanks and congratulations for the excelent work!

  151. rahul chauhan
    Jun 29, 2013


  152. lahti
    Jun 27, 2013

    Very nice spreadsheets! Is it possible to make one about 3-phase transformer inrush and aprox. voltage drop caused by inrush?

  153. Mandy
    Jun 27, 2013

    this is wonderful!

  154. mycandy
    Jun 15, 2013

    Many thank to you!

  155. pnp
    Jun 03, 2013

    nothing more to say…….. a big hug for this help. u r doing a great help to students like me….

  156. BAMBAA
    May 31, 2013


  157. Franklyne Dhayalan
    May 31, 2013

    Thanks for doing a lot of work. It is very good inded.
    Could you please clarify if we use chemical earthing ) meaning moisture obsorbing material is filled in around the electrode) will you calculation still be good enough?

  158. lasser56
    May 09, 2013

    hi thanks for all the good tools you guys have come up with. Actually i’m trying to study electrical services design on my own,i got your eplus menuCAD software which i think is a helpful tool. however i still need some step by step guide notes on some basic things i should know. Can you help with any straight to the point books,articles or any literature on electrical services design?
    thank you and i’ll appreciate any help you give

  159. Kevin Felix
    Apr 18, 2013

    Can someone tell me how to download Electrical MS Excel Spreadsheet.

  160. aleskndr
    Apr 05, 2013

    please how can i download

  161. Tadikamallasairam
    Mar 12, 2013

    could you please tell me how to download these spreadsheets

  162. tarekdia
    Dec 23, 2012

    this is a test format for 13.8 kv switchgear


    Panel No : Designation No. : A.Q1
    Manufacturer : ABB Rated Voltage : 24 KV

    Type No. : VD4/P 24.25.25 Rated Aux. Voltage : 125 VDC

    Serial No. : 1VC1AL000 Rated Current : 2300 A


    1 Inspect for physical damage / defects.
    2 Check nameplate information for correctness
    3 Check tightness of all bolt connections
    (Torque Wrench)
    4 Check racking mechanism for alignment and
    Smoothness of operation
    5 Check quality of paint work
    6 Check proper operation of all mechanical interlocks
    7 Check for correct breaker position indications
    8 Check for correct spring status indication
    9 Check all wiring correctness as per approved drawings
    10 Check that all grounding are securely connected


    3.1 Function Test.

    1 Local control, alarm and indications
    2 Remote control, alarm and indications
    3 Check correct operation of all auxiliary “a” and “b” switch contacts.
    4 Check breaker operation counter
    5 Check trip free and anti-pumping circuit
    6 Check electrical operation of breaker racking tracks. (interlocks and limit switches).

    3.2 Insulation Resistance Measurement:


    1 MIN

    1 MIN

    1 MIN
    CB OPEN: R1+Y1+B1-R2+Y2+B2+GROUND
    1 MIN

    3.3 Contact Resistance Test: Current injected 100A



    Test Kit : Megger & CPC 100

    3.4 Breaker Timing Set

    RΦ (in mSec)
    YΦ (in mSec)
    BΦ (in mSec)
    Closing Operation
    Closing Coil
    Open Operation
    Tripping Coil 1
    Open Operation
    Tripping Coil 2

    Test Kit: EGIL

  163. roel
    Dec 08, 2012

    Thanks to all the contributor and developer of this site/forum…very helpful

  164. ali1980
    Nov 27, 2012

    Thanks, very usefull

  165. psrpskumar
    Nov 26, 2012

    thankyou very usefull for me

  166. cmurugan-design
    Nov 15, 2012

    Pls post current transformer design xlx

  167. m0Handaznelson
    Nov 01, 2012

    Superb! very useful, i learned a lot…thanks…

  168. mohamed Iqbal
    Oct 31, 2012


  169. akira
    Sep 19, 2012

    Sincere thanks and appreciation to this wonderful forum

Leave a Comment

Tell us what you're thinking... we care about your opinion!

Premium Membership

Get access to premium electrical guides, technical articles and much more!