Busbar sizing in case of parallel transformers inside of a main switchboard

[KrunoslavSever]

Hellow, 

in case of parallel transformers, is there a calculation consideration about amperage sizing of main busbars? For instance in case for 2 transformers of 1000 kVA, maximum amperage could be about 2900A. But if you arrange incoming breakers inside of a switchboard at the end of a enclosure, that is left and right, and arrange loads accross board equally, do busbars actually need to be 2900A? They would have to be if breakers would be at the same end of a enclosure, but what about arranging them differently? How do you optimize the main amperage level?

Thank you,

Best regards,

K

[KrunoslavSever]

Just to bump this topic a bit and give similiar info about my question.

I've found a technical paper from competition:

Technical Application Papers No.11
Guidelines to the construction of a
low-voltage assembly complying with the
Standards IEC 61439 Part 1 and Part 2

In this paper, busbar sizing is considered but not for case of transformers in parallel. So, if someone comes accross, please let me know.

Best regards,

K

[BranimirNovko]

Very good topic Krunoslav,

let's find out here!

Regards,

Branimir

[S-W]

Hello @KrunoslavSever @BranimirNovko, thank you for your message, we'll come back to you with a reply soon.