Short Circuit Fault Level Calculation

In this video , Electrical fault level calculation for short circuit faults is shown.

After seeing this video , concept of fault level calculation for given single line diagram will be cleared.

[pietervdberg]

Nice video if the questions can be explained. A number of people (including myself) asked why the factor of 1.05 comes into the equation. I still prefer the per unit method. It eliminates the need to determine what voltages should be used at different levels if you have multiple transformers.
Also, all those motor loads will definitely contribute to increasing the Isc at point 3. Suggestion is that if you don’t want to bring motor contribution into example, don’t specify motor loads. It can confuse some readers thinking that you don’t need to add motor contribution.

[charzanboo]

I was asked to perform the above short circuit calculation in an interview...in my head.

[hijazahmad]

Nice... I was searching for this type of explanation.. Excellent

[musabkanani]

Iam senior electrical engineer
Your explain is soo good so thanks

[justinlow-thion]

very good video tutorail. simple explanation and easy to understsnd

[liewts]

Could you also comment on the assumption made on the impedance of the power supply utility? Thank you.

[noname-ugqx]

Why is the backup generator not included when calculating If at point 2 (Busbar)?

[ktsmurthy]

If Generator(1.5 MVA) is running, Then How to Calculate Fault current.

[mthuthuzelimatsheke]

It's so meaningful and professional classes i would like to join as a mamber please admin

[mourshadhaider]

Could you please explain number "10" in the formula for z(transformer). Where did it come from.

[ImranKhan-nuxw]

Thanks nice vedio about short circuit study

[mudasirhashmi]

How do you the cable impedance as .0077 and what are the formula you are using

[tapasbarua]

Very nice video. But I did not see any contribution of motors into the fault point as a secondary source and alternator and also why you have included 1.05XV in the calculation?

[joegellido]

The presentation will be complete if motor contribution to fault is considered which is very important factor..

[jkmultimediasolutions]

Thanks for the video.
Please when you mentioned number of runs; did you mean the number of cables or what ?
Please, explain it further.
Thanks.

[satishkumar-wmyl]

please can you share and update more videos of typical calcualtions of short ckt Transformers and RMU Swithchgears, thanks

[ricrobertogonzales]

what is the effect of the motors in the short circuit calculation?

[coopers]

Pls help with data sheet reference for Cable impedance value. It seems you have considered Cable resistance value instead of Impedance. Pls clarify. Thanks

[RaviShankar-sjqs]

Very Informative video admin. Please upload video of disadvantages of harmonics and ways to arrest them.

[e-powersolution]

1:41 thanks for your video, why while calculating z transformer multiple with 10