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Busbar sizing

This video outlines the basic formulas used to size electrical busbars on the distribution / transmission network and is a sample of the ELECTRICAL CONTROL AND PROTECTION PART 3 course which can be found on UDEMY, use the following link to access the course..
www.udemy.com/...
If you need a $10 discount voucher please drop me a message!!

Пікірлер: 129

  • @jav1494
    @jav1494 Жыл бұрын

    Absolute Legend! Completed the Electrical Generation on Construction Sites during lockdown and it was full of so much information. Thanks for everything !

  • @Electricalsteve

    @Electricalsteve

    Жыл бұрын

    You're welcome!

  • @zeeshanhaider4428
    @zeeshanhaider44282 жыл бұрын

    A sound lecture with simplified examples. Great work

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Many thanks!

  • @kennethchiebuka5168
    @kennethchiebuka516811 ай бұрын

    Wow!! You are indeed a legend in the power sector and a great teacher too.

  • @Electricalsteve

    @Electricalsteve

    11 ай бұрын

    Thanks for the kind words Kenneth, glad you found the course useful!! Steve

  • @angelofranklin1
    @angelofranklin12 жыл бұрын

    Very good video Steve

  • @AP-pg6uf
    @AP-pg6uf2 жыл бұрын

    Thanks, Greate lecture with simplified examples

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    You are welcome!

  • @vincentmasanja6979
    @vincentmasanja69792 жыл бұрын

    Thanks for your teaching.

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    You are very welcome

  • @engalaamenshawy5377
    @engalaamenshawy53773 ай бұрын

    wow!! very very nice not teacher but you are doctor congratulation.

  • @Electricalsteve

    @Electricalsteve

    3 ай бұрын

    Thank you! 😃

  • @user-es7ib5gq4s
    @user-es7ib5gq4s3 жыл бұрын

    Thanks alot for explaining i think we should raise the rating of bus bar over the selection value to carry the mechanical stress of cables

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    The cable rating will depend on the load being carried under all conditions and the two are not normally linked.

  • @hpvide
    @hpvide2 ай бұрын

    Wow 😳.. thank you so much

  • @Electricalsteve

    @Electricalsteve

    2 ай бұрын

    Welcome!

  • @KevinCoop1
    @KevinCoop14 жыл бұрын

    This is great if the customer owns all the equipment or is the utility company. If the transformers are utility company owned and the equipment is customer owned, we have to decide how to size the bus bar in the gear based on electrical loads attached. Utility companies can change their transformers as they see fit.

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Kevin, Agreed, if you are trying to conserve money we can base the bus bar on the connected loads, but make sure you future proof the design by adding lots of spare busbar capacity as upgrading the busbar size later when new feeders are added can be very painful in terms of outages and cost.... steve

  • @KevinCoop1

    @KevinCoop1

    4 жыл бұрын

    stephen brooks Over the years doing electrical designs for all kinds of businesses, I have checked back with my customers and gotten a printout of their utility bills for a year minimum. The bus was sized using NEC calculations. Every time the results were very similar. A 3000 ampere rated service equipment would have maximum recorded 900 to 1100 amperes. Utility companies typically took our load information and multiplied it by .5. Respectfully, Kevin

  • @sathishsathiyamoorthi1330
    @sathishsathiyamoorthi13304 жыл бұрын

    A very good and detailed video. Thank you sir

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    thanks

  • @satishkumar-wm9yl
    @satishkumar-wm9yl2 жыл бұрын

    keep uploading the good concepts for selection of CT , PT , Breaker, cable sizing for Newly construction substation

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    thanks!

  • @erisherm.385
    @erisherm.3853 жыл бұрын

    Thank you very much. I have learnt something very useful.

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    You are welcome!

  • @ashutoshsawant7013
    @ashutoshsawant70133 жыл бұрын

    Very well explained. Thank you Sir.

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    You are welcome

  • @lipikashaha2001
    @lipikashaha20013 жыл бұрын

    Thanks for Helpful calculation - Sir

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Most welcome

  • @kingsleychinyani6676
    @kingsleychinyani66763 жыл бұрын

    Useful information. Thanks a lot.

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    You are welcome

  • @relaxer7329
    @relaxer73295 жыл бұрын

    hey is there any scientific paper support your information like IEEE standard

  • @delosmark18

    @delosmark18

    4 жыл бұрын

    I agree, it is better that the topic is supported by a standard

  • @satishkumar-wm9yl
    @satishkumar-wm9yl2 жыл бұрын

    please can you explain the choosing the CT, PT, Breaker size for outgoing and Incoming line for newly construction line from the existing feeder , thanks sir such a good explanation it has uses a lot for all

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Noted

  • @tuna6423
    @tuna64232 жыл бұрын

    Generally, bus coupler breaker will be normally open. One transformer A will feed to bus A and trf B will feed to bus B. However, there will be some case that if one of transformer not available another will take all the load of bus A and B in this case bus coupler breaker will be closed it means that both trafo A & B shall be sized based on load on bus A plus load on bus B it means that bus coupler breaker just size as per transformer rating it is not required to unnecessary size double time of trafo rating this is the same thing of bus bar rating also Please check your presentation sir

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Hi PP, This is a very simple example and most transmission level substations will have multiple incomers, transformers and busbars. The decision on the bus section breaker rating will be decided by the designers to provide the best operational flexibility & cost effectiveness for the system. Regards Steve

  • @arnovpachani2385
    @arnovpachani23854 жыл бұрын

    a valuable information thank you

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    You are welcome

  • @PramodKumar-zl4gq
    @PramodKumar-zl4gq2 жыл бұрын

    Nice explanation

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Thanks and welcome

  • @scorpionmad3299
    @scorpionmad32995 жыл бұрын

    Thanks alot , It was very useful 👌😍👍

  • @umamahesh1350
    @umamahesh13504 жыл бұрын

    Nice explanation sir.

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Thanks and welcome

  • @akramal-frigy1143
    @akramal-frigy11435 жыл бұрын

    Many thanks for you. Very good video

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Hi, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WERD1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @sambathbunkh
    @sambathbunkh10 ай бұрын

    Great topic

  • @jishnunarayan7915
    @jishnunarayan79154 күн бұрын

    I dont think we need to size the busbar and Buscoupler to match with the sum of Secondary current from both the transformers (In the case of two transformers)as only one transformer will be working at a time when the buscoupler is closed..Please let me know your thoughts on this

  • @Electricalsteve

    @Electricalsteve

    6 сағат бұрын

    both transformers can feed the busbars when they are operated in parallel

  • @sethu7867
    @sethu78673 жыл бұрын

    very good information

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Thanks

  • @jayschumacher815
    @jayschumacher8154 жыл бұрын

    Great info, thanks for posting

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    No problem!

  • @rkprasadbhookya1878
    @rkprasadbhookya18787 ай бұрын

    Superb trick

  • @Electricalsteve

    @Electricalsteve

    7 ай бұрын

    thanks!!

  • @efrenebora1430
    @efrenebora14304 жыл бұрын

    Hi there sir. I would like to ask if I can use the same computation? Say, I need to determine the HV panel outgoing protection to a load 630Kva, 33/0.4Kv Transformer. Hope you could help me. Thanks.

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Efren, the calculation is valid for all voltages. steve

  • @full7184
    @full71842 жыл бұрын

    thanks lot , nice video.

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Glad you liked it!

  • @thesilentgamer4210
    @thesilentgamer42109 ай бұрын

    sir, do you know how to size cable for transformer neutral earthing? my transformer is delta y. 3MVA 33KV / 415 V.. I hope you can help me sir

  • @DeepakKumar-zm6sy
    @DeepakKumar-zm6sy4 жыл бұрын

    Thank you sir..This video is very helpful

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Hi, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WERD1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @navassharif7228
    @navassharif72285 жыл бұрын

    Hi sir It was very useful.we want more video for sizing each Electrical switch gears pls.thanks

  • @Electricalsteve

    @Electricalsteve

    5 жыл бұрын

    Hi, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WETT1001 to get them for $9.99 Regards Stephen Brooks

  • @delosmark18

    @delosmark18

    4 жыл бұрын

    @@Electricalsteve what topic in the udemy website sir which includes equipmemt sizing? Thanks im interested.

  • @Shivkumar-qp9wv
    @Shivkumar-qp9wv5 жыл бұрын

    Sir good knowledge

  • @akramal-frigy1143
    @akramal-frigy11434 жыл бұрын

    many many thanks .....

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Welcome!

  • @shelfrobthomas449
    @shelfrobthomas4494 жыл бұрын

    The busbar sizing is as per IEC standard, because IEEE have only 1200, 2000, 3000A.

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Shelfrob, any mention of standards has deliberately been omitted, the focus is on the methodology..steve

  • @zedikasElectro
    @zedikasElectro4 жыл бұрын

    nice explanation ... i gate good thing from ur tutor .thanks and keep going with other related components

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Thank you, I will

  • @AP-pg6uf
    @AP-pg6uf2 жыл бұрын

    Hi Please can you send a for ELECTRICAL CONTROL AND PROTECTION PART 3

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Hi, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WERD1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @vanlahm4728
    @vanlahm472810 ай бұрын

    Hi Sir. Just a quick question. The busbar rating for the current is multiplied by 3. But why is the voltage not mulplied by 3 also?

  • @Electricalsteve

    @Electricalsteve

    10 ай бұрын

    Hi, The system voltage is kept constant regardless of the power output of the transformers or the size of the loads. If the voltage is constant then the only thing that can change as the power magnitude changes is the current and it does, when the power drawn by the load increases the current increases. Regards Steve

  • @forsanh.a.hassan2677
    @forsanh.a.hassan26774 жыл бұрын

    Thanks a lot

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Most welcome

  • @WarwickChapman
    @WarwickChapman10 ай бұрын

    Does the course cover DC busbar sizing?

  • @alwaga7917
    @alwaga79175 жыл бұрын

    why is conected shunt reactor on bus bar 400kv thank you

  • @birendrakumarpati5460
    @birendrakumarpati54603 жыл бұрын

    Thanks sir

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Welcome

  • @wadib3eed7
    @wadib3eed73 жыл бұрын

    I have a question. Some peoples in youtube says for copper 1 sq mm = 1.4 Amps and for Al 1 sq mm = 0.8 Amps . Is it correct or not ? and how to calculate the current density for busbar if i want carrying current of 200 Amp as an example.

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Hi Wadi, this video covers busbars, not conductors. steve

  • @chired6851
    @chired68512 жыл бұрын

    Thanks for that Stephen - in the first example with 1 incomer, the full load current of the secondary side of the transformer is 1050A, could I design the switchgear with a busbar rating of 1000A and an incomer breaker rating of 1000A (maximum peak load including future spare is 900A) . I have done similar on a project which I consider to be a sound design. I think it is fit for purpose but does it break any IEC codes do you know?

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Hi Chi, In the UK we would always choose the rating above the transformer rated output , so 1250A in your case. The loads change over time so it’s not the best way to size the busbar. Regards steve

  • @chired6851

    @chired6851

    2 жыл бұрын

    @@Electricalsteve Thanks very much Steve

  • @arafatbaunto4068
    @arafatbaunto40683 жыл бұрын

    Nice

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Thanks

  • @enriqueh8847
    @enriqueh88474 жыл бұрын

    Thanks. I have some questions, could you explain how to calculate or do the sizing for bus-bar at MV side of power transformer HV 220kV/20kV, 12%, 125MVA, YNd11, ONAN/ONAF? where at PCC of transmission, it is 40kA at 220kV (HV side) which is the short circuit current value considered as designing at this high level voltage (220kV) (according to transmission operation) and in addition, the company of transmission gives us a value of 15kA(maximum demand of load) the maximum three phase short circuit current at the same point PCC (High voltage side).. So the second question, according to IEC standard or experience for designing MV switchgear at 20KV, what short circuit current value will it have to be used 40kA or 15kA (PCC connexion, 220kV) for sizing my MV switchgear, Ik and Ip (withstand simetrical and peak short-circuit current?

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Ki, This video is a sample only, please take the course for full guidance on this and many other substation design issues. Regards steve

  • @enriqueh8847

    @enriqueh8847

    4 жыл бұрын

    @@Electricalsteve okay, thank you.

  • @12345678sharad
    @12345678sharad4 жыл бұрын

    I am buying your course, please if you can put up a course on transmission line protection, and relay settings for that, thanks a lot

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Sharad, working on the transmission line protection course now...steve

  • @surendrakverma555
    @surendrakverma5553 жыл бұрын

    Good

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Thanks

  • @mohammedrahimuddin268
    @mohammedrahimuddin2684 жыл бұрын

    Very informative video. Thank you

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    You're welcome

  • @shanu5089
    @shanu50892 жыл бұрын

    Sir how to drow single line diagram like this video

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Hi Dill, PowerPoint / Autocad are both ideal. steve

  • @americarsqueensland1667
    @americarsqueensland16673 жыл бұрын

    if you had say a 500 amp max load could you use a much higher rated busbar of say 2000 amp, i don't see why you need to have the busbar rating stay near the load value, seems to me you should or could just a much bigger bubar and you wont ever have a problem.

  • @Electricalsteve

    @Electricalsteve

    3 жыл бұрын

    Hi, that’s correct. You don’t size the busbar based on the load, as loads can change over time. You size it based on the maximum amount of power available to flow into the substation steve

  • @edherrevideos
    @edherrevideos5 жыл бұрын

    like y suscrito...Thanks...

  • @ahilcuts7971
    @ahilcuts79715 жыл бұрын

    Hi sir .. you said incomer 1 (800A) Incomer 2(800A) future (800A) ..and you going to choose 2500A busbar .if I saw in my switchgear diagram all incomer and buscoupler are same rating .. for example 2500A busbar we choosing Incomer and buscoupler 2500A breaker .. but current rating just 680A for both Incomer why?????

  • @Electricalsteve

    @Electricalsteve

    5 жыл бұрын

    Hi Ahilan, You didn’t mention the system voltage but the utility may be future proofing the substation by having the highest rated circuit breakers possible. You will also find that the cost difference between 800/1250/2500 circuit breakers can be small for large equipment orders so it makes sense to go for the highest circuit breaker rating , this also reduces the need for different circuit breaker spares and allows the circuit breakers to be interchanged easily when one goes faulty. Steve

  • @ahilcuts7971

    @ahilcuts7971

    5 жыл бұрын

    @@Electricalsteve 415v

  • @u-canlearn7967
    @u-canlearn79674 жыл бұрын

    Very helpful ....Thank you Sir. Please keep uploading more videos related to Electrical engineering.....can you help with transformer sizing as well.

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Yes I will

  • @AhmedAli-zb3oh
    @AhmedAli-zb3oh Жыл бұрын

    @stephen brooks Dear Stephen I want to get a discount voucher for all your protection courses, please

  • @Electricalsteve

    @Electricalsteve

    Жыл бұрын

    Hi Ahmed, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WERD1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @souadmassi7683
    @souadmassi76834 жыл бұрын

    Why in the equation of the power the power factor cos phi did not appear?

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Souad, because we are using the VA equation which does not contact power factor steve

  • @souadmassi7683

    @souadmassi7683

    4 жыл бұрын

    @@Electricalsteve Thank you sir

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WERD1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @pavintechengineeringpavint1389
    @pavintechengineeringpavint13892 жыл бұрын

    How it possible request ur advice

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Hi, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WERD1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @delosmark18
    @delosmark184 жыл бұрын

    Hi sir, what topic in udemy the sizing of equipment? I would like to buy thanks

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Mike, This is a module on the air insulated design course hosted by udemy. Steve

  • @delosmark18

    @delosmark18

    4 жыл бұрын

    @@Electricalsteve hi sir, i have trouble in buying your videos. Paypal, cc or debit card cant be link to udemy :(

  • @engineershihas
    @engineershihas4 жыл бұрын

    Is it possible to get 50kA for 630A busbars.

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Shihas, At 400kV it’s a common busbar rating Steve

  • @engineershihas

    @engineershihas

    4 жыл бұрын

    Thanks Steve. How about 132kV?

  • @Electricalsteve

    @Electricalsteve

    4 жыл бұрын

    Hi Shihas, 40kA is common.... Steve

  • @randhasan
    @randhasan2 жыл бұрын

    Hi Stephen can you please send me voucher discount

  • @Electricalsteve

    @Electricalsteve

    2 жыл бұрын

    Hi, Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code WERD1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @danielmlynarz8900
    @danielmlynarz8900 Жыл бұрын

    Hi Stephen, could you please write me your email address? I need it in relation to the Udemy voucher. Thank you in advance.

  • @Electricalsteve

    @Electricalsteve

    Жыл бұрын

    Hi Daniel Go to the Udemy website, search for courses under my name ( Stephen brooks ) & use the voucher code IGST1001 to get them for $9.99, vouchers expire in 5 days. Regards Stephen Brooks

  • @danielmlynarz8900

    @danielmlynarz8900

    Жыл бұрын

    @@Electricalsteve Thank you, purchased.