Hello friends , I never worked with transformers before this is my first test. What is the normal phase angle value between the input voltage and current at no load ? I'm getting 89 degrees

 

Hi Y,
There is an interesting transformer Article here on AAC.
https://www.allaboutcircuits.com/textbook/alternating-current/chpt-9/phasing/
https://www.allaboutcircuits.com/te...chpt-9/mutual-inductance-and-basic-operation/
E

 

The phase shift is due to the no-load current being the reactive magnetizing current as determined by the transformer inductance.