NDB Technologies CTT Series User Manual page 39

9.4.2 Bushing Terminal Method
In order to test a CT installed in a circuit breaker, install the H1 clamp on the bushing
(H1 side of the CT), and the H2 clamp on the second bushing (H2 side of the CT).
Make sure the breaker circuit is closed. In order to reduce nearby induction effects,
the terminal on which is connected the H2 clamp, must be shorted to ground.
Either refer to section 8.1 for manual mode operation, or section 8.2 for automatic
mode operation.
Breaker is closed
C T T S e r i e s
X1
X2
X3
X4
X5
Control Cabinet
- U s e r M a n u a l
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