what is formula in determining the size of Circuit Breaker for transformer wit

what is formula in determining the size of Circuit Breaker
for transformer with the following specifications. 7 units
of 1600 volts (primary) and 400 volts (secondary). Both
Primary and Secondary will have a circuit breaker which is
SF6. What should be the Switchgear Main Breaker Size anf
the sizes of each brances Circuit Breaker for Primary.

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what is formula in determining the size of Circuit Breaker for transformer with the following spec..

Answer / k.prakashchandra

What is the expected max load?

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