GE Industrial Solutions ProTrip Conversion Kits AK-50, AKU-50, AKS-50, AKT-50, AK-75, and AK-100 - Manual (Page 10)

SECTION 4. BACK FRAME
CONVERSION
The back frame conversion consists of the following
operations:
1. Modification of the crossbar assembly for the flux
shifter installation.
2. Removal of the existing trip devices.
3. Installation of the phase sensors.
4. Installation of the back frame harness.
Crossbar Modification
The flux shifter reset linkage is driven by the actuator
bracket, as shown in Figure 3. The actuator bracket must
be assembled to the left side link of the left pole, as
shown in Figure 14.
If the actuator bracket mounting holes are not in the left
side link, the holes must be added. Drill and tap two
5 / 16 -
18 holes using the pattern in Figure 15. A full-size
template is provided in the Appendix.
Figure 14. Actuator bracket attached to the left pole link.
Figure 15. Drill pattern for actuator bracket mounting
holes.
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