m
27 - AKD-10: Primary Disconnects (Contacts) or “Fingers”
The Finger Clusters Accessory Manual 2TSA451012PO000 covers the primary disconnects.
The primary disconnects are flexible connections between the breaker line and load terminals
and between the equipment line and load terminals. All primary disconnect fingers are
factory-installed and are assembled on Emax 2 Retrofill circuit breakers.
Use this instruction sheet if damaged fingers need to be replaced. It takes about 5 minutes
to install a finger cluster, defined as a double pair of fingers on a breaker. Figure 38 shows
finger clusters or primary disconnects on a Retrofill circuit breaker. Figure 39 details the
finger-cluster assembly.
Figure 38
Circuit Breaker Removed, Featuring Primary Disconnects “Fingers” (Contacts)
Figure 39
Circuit Breaker ,Fingers Details
The primary disconnect assembly is factory adjusted with a gage to apply a 95 + 10 Ib. force t
o a 1/2-inch thick copper bar, inserted between the upper and lower fingers. Set this force
range, in the field, by tightening the nuts to set the spring dimension shown in Figure 40.
Note that this dimension is measured between the top of the retainer and the underside of
the washer. Also note that no bar is inserted between the fingers when setting this
dimension. Figure 41 shows the cluster components.
Remove and
Replace
C
Summary of Contents for Emax 2 Retrofill
Page 36: ...11 14 22 21 31 34 42 41 C2 C1 51 54 62 61 71 74 82 81 91 94 02 01 45 48 R1 R2 C ...
Page 38: ...C ...
Page 43: ...NOTES 1 WP WavePro fixed connection point C ...
Page 51: ...ONLY for 3200A Figure 48 Steps in Exploded Views for 3200A WPS 32 WPH 32 WPX 32 C ...
Page 52: ...ONLY for 3200A Figure 49 Steps in Exploded Views for 4000A WPS 40 WPX 40 C ...
Page 53: ...Figure 50 Steps in Exploded Views for 5000A WPS 50 WPX 50 ONLY for 3200A C ...
Page 65: ...Figure 64 Wiring of WP 4000A breaker with FAN control unit C ...
Page 74: ...Figure 75 Figure 76 WPF 16 with special 2500A Fuse WPF 16 2500A Fuse Tang Positions 74 C ...