Effective December, 1998
IL 33-FC6-1
Page 11
Step 13: Installing the Sensor, PT Extension,
Aux. CT, and DTA Extension
Harnesses
A. Connect the Sensor Harness to the proper
terminals on the Aux. CT Module. Refer to
Section 12 of the Retrofit Application Data,
supplied with the Retrofit Kit, for detailed
wiring specifications.
B. Using one of the metal screws that secures
the Aux. CT Module Mounting Brackets to the
Aux. CT Module, connect the green ground
wire from the Sensor Harness (with the ring
terminal) to the case of the Aux. CT Module
as shown.
C. Route the Sensor Harness down and through
the hole in the Breaker Back Plate, then up the
back of the Breaker to the top of the Sensor
Assembly.
D. Connect the ring terminals of the Sensor
Harness to the Sensors. Refer to Section 12 of
the Retrofit Application Data, supplied with the
Retrofit Kit, for detailed wiring specifications.
For Kits Supplied with a PT Module Only
.
Refer to Section 7-3, Power Flow Convention
of the Retrofit Application Data, for additional
wiring information and verify the Phase
Convention used on this Breaker Application.
E.
For Kits Supplied with a PT Module Only
.
Plug the connector of the PT Extension
Harness into the receptacle on the PT
Harness. Route the PT Extension Harness
down behind the Aux. CT Module Assembly,
then towards the Trip Unit. PT Extension
Harness final connection will be made later in
the Retrofit process.
F. Connect the Aux. CT Harness to the Aux. CT
Module plug. Route the harness along the right
side of the Breaker to the Trip Unit Assembly.
Plug the other end of the Aux. CT Harness into
its receptacle on the right side of the Trip Unit.
Fold any excess length of the Aux. CT Harness
and secure using the nylon wire ties provided.
The excess should then be tucked in against
the right Breaker side panel.
G. Connect one end of the DTA Extension
Harness to the terminal block on the DTA
Assembly. Assure that the wires are connected
so that they correspond to the “+” and the
unmarked DTA wires.
H. Route the DTA Extension Harness along the
bottom of the Breaker, then up to the Aux. CT
Module. Connect the “+” DTA Extension
Harness wire to the “OP” terminal on the Aux.
CT Module and the unmarked wire to the “ON”
terminal. Fold any excess length of the DTA
Extension Harness and secure using the nylon
wire ties provided. The excess should then be
tucked in against the right Breaker side panel.
