Current transformer calculations

[Mondy]

Can anyone help me with the accurate calculation of ratio and phase errors in measuring current transformers?

I would like to get a spreadsheet or something similar together for the design of toroidal bushing transformers and so far have not come up with any equations or methods that agree with test data that I have on actual current transformer test results. Some help from you experts would be very much appreciated.

Thanks
Ray

 

[Mondy]

Is there anyone that can help me as I really could do with some assistance?

Cheers
Ray