transformer output voltage regulation chec up

[electr.engr]

Dears

 

I want to know that there are some motorized & non motorized electrical loads connected to the down stream of distribtion transformer i.e. at switchgear/mcc if the largest motor starts what would be the voltage regulation at the output (terminal) of transformer?. Would there be any voltage dip at the distribution level?

 

Pls. send me the calculation sheet for this motive.

 

 

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