Multiples of Tap Value Current

[Humble2000]

Hi ,
I have a CO-11 Relay which under CT Ratio shows Value=160 and under Remarks I have
3 X 3200/(2400)/2000/(1600)/1000:5 A
The Instantanious PU is 4800.
I am confused how to project this on TCC curve and also what are the meanings of those CT ratios?
where did they get 160 from?

I appreciate any feedback on this.

 

[davidbeach]

It is a multi-tap CT, that part isn't a problem. No idea where the 160 comes from since 800:5 isn't one of the listed possibilities.

 

[Humble2000]

yes thats the part that confuses me too.

 

[davidbeach]

Have you seen the actual CTs yet or just the written description?