Campbell Scientific CS10-L and CS15-L Current Transformers - Manual (Page 23)

Appendix A. Theory of Operation
FIGURE A-4. CS10 with the wire
A.2 Current Transformer Description
A current transformer is a special kind of transformer that transfers energy
from one side to another through magnetic fluxes (see Figure A-5).
FIGURE A-5. Magnetic flux schematic
The formula for a transformer is as follows (Equation A):
i
1
* n
1
= i
2
* n
2
Equation A
Where i = amps and n = number of turns or windings
And where n
1
is the primary winding and n
2
is the secondary
A-3