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we are using three transformer 33000/430 vac for three
separet block.all three transformer have three LT panel
separetly. can be Interconnected all three panel through bus
coupler. this is permissable or not by state electricity board.
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Answer Posted / sgthakur
Obviously ths is permissible.
1. carry on the PI test of each trans.It should not be less
than 2.00
2.Kva rating must be same
3 Percentage impdence must be same if diff .,parallaling
can be done but trans load shsring may be diff.
4 vector Gr.must be same
5If the Trans. HT source coming fr. diff. source, before
connecting them parallel phase ballancing and phase
seq.test must be done.
6.Other paralling condn. ie freq., voltage must be same as
usual.
7. On LT side trans. tape must be kept in same pos.
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