I was recently stumped by the following: consider a 800/400/1 Class P CT as per IEC 60044.1. The rated burden is given as 7.5VA (or 7.5ohms) at the 400/1 tap. At the 800/1 tap it is specified as 5P20. Is there a way of determing the rated burden on the 800/1 tap based on the information provided above?
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