The ratio of Zero sequence impedence to Positive sequence impedence is around 0.7 for a 3 phase core type power transformer with working Flux density 1.6 Tesla .
Reply To: Transformer Question No. 19 – Power transformer vector group
The ratio of Zero sequence impedence to Positive sequence impedence is around 0.7 for a 3 phase core type power transformer with working Flux density 1.6 Tesla .