I'm having difficulty with a turns ratio test on a transformer with a gapped core (AL250). The program consist of 18 test (8 of these are turns ratio) but there is only an issue with one turns ratio test (Test No. 2) where the measurement is persistently coming out low. I have tested the batch of transformers using our Wayne Kerr and they are fine. Attached is a copy of the test results for short, medium and long intergration as i hoped the long intergration would solve this for me but no joy.
Please can you have a look and give me your thoughts.