CT label

[rockspotter]

I have a CT label (ring type) that has a line:
VA/cl. 5/1-7.5/3
I know the 5VA burden and class 3 but what does the 1-7.5 signify?
And, am I correct in thinking this is a metering CT?
Thanks for all help.

 

[ScottyUK]

Probably 5VA at class1 accuracy and 7.5VA at class 3 accuracy.


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