GE Industrial Solutions Power Break Stationary Conversion Kit - Manual (Page 3)

3
2500-4000A Stationary Breaker
Breakers with a frame size from 2500A to 4000A are
considered large frame. They include the 2500A front
connected (FC), 2500A back connected (BC), 3000A FC,
3000A BC, and 4000A FC. As in the case of the 800A
breakers, the Power Break
 II designs are similar in
dimensions to the Power Break  I breakers. Only the panel
cutout needs to be modified to be ready for breaker
installation. Begin process by removing existing breaker
from equipment.
Panel Cutout
The 2500A FC, 2500A BC, 3000A FC, and 3000A BC require
a 14” x 16.07” cutout for the Power Break II breaker to fit.
Figure 8 shows the new front panel cutout using the
existing cutout as reference (red line in Figure 7).
Figure 7: 2500A FC, BC, 3000A FC, and BC Panel Cutout
The cutout for the 4000A breaker should be 14” by 13.54”
and it is shown in Figure 8.
Figure 8: 4000A Panel Cutout
Trim Plate
Once cutout is complete, mount the provided trim plate
using #8-32 screws and torque to 5 in-lbs. Please note the
trim plate is determined by the Power Break I that is to
be replaced. Figure 9 shows the 2 types of trim plates used
in large frame breakers. If the equipment had an
electrically operated Power Break I, SSF40TPCCE kit
should be used (left). If the breaker was Manually operated,
use SSF40TPCCM kit (right).
Figure 9: Trim Plates: Electrical (left), Manual (right)
Figure 10: Trim Plates: Electrical (left), Manual (right)
Breaker Installation
Ensure that all accessory connections are secure. Line up
mounting holes with enclosure. Place the bolts and tighten
to 225 in-lbs for 2500-3000A breaker, or 300 in-lbs for a
4000A.
Neutral Sensor
For Power Break I connected in a three-phase four-wire
system please note the following regarding neutral sensor:
-
If the Power Break I has an Enhanced MVT Plus/PM
trip unit, the neutral sensor can be reused
- If the Power Break I has an Original MVT, RMS-9, or
EPIC trip unit, the neutral sensor can be reused.
However, a 1:1 isolation CT might be required to
properly isolate from multiple grounds.
- For Power Break I with any other trip unit, the
neutral sensor must be replaced. See Page 31, GET-
8052C for Neutral Sensor Options.