Busbar sizing 

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

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

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

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.

Thanks, Greate lecture with simplified examples

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

A very good and detailed video. Thank you sir

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

Does the course cover DC busbar sizing?

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.

a valuable information thank you

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

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

Nice explanation

Thank you sir..This video is very helpful

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

Great topic

very good information

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

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?????

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

Sir good knowledge

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?

thanks lot , nice video.

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

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.

Thanks a lot

Very informative video. Thank you

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

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

A sound lecture with simplified examples. Great work

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

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

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

Thanks alot , It was very useful 👌😍👍

Hi Stephen can you please send me voucher discount

Sir how to drow single line diagram like this video

Wow 😳.. thank you so much

How it possible request ur advice

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.

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?

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

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

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?

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

Very good video Steve

Thanks for Helpful calculation - Sir

like y suscrito...Thanks...

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

Useful information. Thanks a lot.

Thanks for your teaching.

Nice

Superb trick

Very well explained. Thank you Sir.

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

Thanks sir

many many thanks .....

Nice explanation sir.

Good

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

Many thanks for you. Very good video

Great info, thanks for posting

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