NDB Technologies CTT Series User Manual page 31

9.2 Buried CT in Delta Winding
This section explains how to connect the CTTx5 and CTTx2 to test a current
transformer installed within the windings (buried) of a delta configuration of a
power transformer.
9.2.1 Connections
1. Before connecting the CTT instrument to any other cable/equipment, make
sure the ground post is earthed properly using the provided ground cable.
2. Connect the CTT to a power source and then turn on the instrument.
3. In order to reduce nearby induction effects, the bushing on which is connected
the H2 clamp, must be shorted to ground.
Opposite windings
are left as is.
C T T S e r i e s
3
- U s e r M a n u a l
2
1
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