GE Industrial Solutions EntelliGuard 800–2000 A Frames, 240–600 Vac Maintenance Manual - Manual (Page 38)

EntelliGuard™ 800–2000 A Power Circuit Breakers
Chapter 7. Maintenance of Standard Parts and Assemblies
28
This section describes procedures for replacing the stan-
dard parts and assemblies available as renewal parts.
Before any of the operations in this chapter can be per-
formed, the breaker must be removed from its compart-
ment, as described in Section 5.2, and placed on a suitable
work surface.
7.1 Primary Disconnects
Primary disconnects provide the flexible connection
between the breaker line and load terminals and the
equipment line and load terminals.
Primary disconnect assemblies are different between the
EGS08, EGF08, and EGH08 frames, as illustrated in Figure
25, and the EGX08, EGS16, EGF16, EGH16, EGS20, and
EGF20 frames, as illustrated in Figure 26. The procedures
for removal and installation of the two types are described
below.
Primary Disconnect Replacement on EGS08,
EGF08, and EGH08 Breakers
The following procedure is illustrated in Figure 27.
To remove a primary disconnect assembly, squeeze the
disconnect fingers together with a suitable tool until the
assembly releases from the stud, then slide it off.
To install a primary disconnect assembly, squeeze the dis-
connect fingers together with a suitable tool, slide the
assembly over the stud, then reduce the pressure on the
fingers until they close into the slots on the stud.
Primary Disconnect Removal on EGX08,
EGS16, EGF16, EGH16, EGS20, and EGF20
Breakers
The following procedure is illustrated in Figure 28.
1. Remove the two nuts from one of the long bolts
holding the primary disconnect assembly together.
2. Carefully slide out the bolt while removing the flat
washer, spring, bushing, upper retainer, bow-tie
spacers, and disconnect fingers from the top and
the bow-tie spacers, lower retainer, and fingers from
the bottom of the assembly.
3. Repeat for the other assembly bolt and components.
4. Slide off the spring clips and remove the two stud
spacers.
5. Remove the main retainer from the stud.
Figure 25. Primary disconnect assembly for EGS08, EGF08, and EGH08
breakers.
Figure 26. Primary disconnect assembly for EGX08, EGS16, EGF16,
EGH16, EGS20, and EGF20 breakers.