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For 3,300V/220V transformer, open the low pressure side and input voltage of high pressure side was...

For 3,300V/220V transformer, open the low pressure side and input voltage of high pressure side was 3,300V and the current was 1A P.F. was 0.12 lagging.

With this condition, connect load to low pressure side wich P.F. is 0.8 and it current flows 150A.

In this moment what are the current and new P.F. of high pressure side?? Also draw phasor diagram before and after of connecting load.

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