Vanguard ATRT-03_03B S2 - Manual (Page 26)

ATRT-03 S2, ATRT-03A S2, AND ATRT-03B S2 USER’S MANUAL REV 2
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3.1.6. Typical Connections to a Donut Type (un-mounted) Current Transformer
Figure 11. Typical Connections to a Donut Type (un-mounted) Current Transformer (CT)
NOTE
The H and X test leads are reversed for the CT ratio test connections shown
above.