8
Installation and removal instructions
for IZM series fixed breaker
three-way Type 32 cable interlock kit
EATON
www.eaton.com
Instructional Leaflet
IL0131187EN
Effective June 2022
To attach the drive (short rod) end of a cable to the drive lever push
swivel fitting (refer to
), follow the directions below (see
) .
1 . Remove upper nut from end of rod of cable assembly .
2 . Slide rubber boot toward tip of rod .
3 . Unthread outer bulkhead nut and slide nut and lock washer
toward tip .
4 . Insert threaded end of rod with 38,1 mm (1,5 inch) tube spacer
into swivel fitting, ensuring that the compression spring remains
between the lower nuts and the swivel .
5 . Slide smaller diameter portion of bulkhead fitting into cable
bracket slot, keeping one of the two lock washers with each
bulkhead nut .
6 . Raise the cable assembly until threaded portion of bulkhead fit-
ting enters slotted hole in cable bracket (threads show
above bracket) .
7 . Bring bulkhead washer and nut down to threads and hand
tighten .
8 . Adjust two bulkhead nuts to approximately center the threaded
section of the bulkhead fitting on the cable mounting bracket .
9 . Hand tighten the bulkhead nuts at this time .
10 . Slide rubber boot back into place over end of bulkhead fitting .
11 . Lower nuts should be against the stop at the end of thread and
upper nut tightened against tube spacer .
12 . Hold lower nuts and torque upper nut to 3,3–4,5 N·m
(30–40 in-lb) .
Step 8
This step describes how to attach the driven (long rod) end of a
cable attached to an interlock assembly on another breaker to the
cable bracket and interlock assembly on this IZM breaker . Refer to
and
for cable routing and correct swivel fittings
to which the cables are connected .
The driven (long rod) end of the cable is attached to the correspond-
ing push or pull swivel fitting on the driven lever on this cable inter-
lock assembly similarly to
Step 7
except the driven end does not
utilize a compression spring between the swivel and nut . For the
push cable, remove and discard the 22,2 mm (0,875 inch) cable tube
spacer
(P)
on the rod end of the cable assembly
(N)
and replace it
with the 38,1 mm (1,5 inch) cable tube spacer
(O)
. For the pull cable,
remove and discard the 22,2 mm (0,875 inch) cable tube spacer
(P)
on the rod end of the cable assembly
(N)
and replace it with the
41,3 mm (1,625 inch) cable tube spacer
(M)
. Install as shown in
Step 9
This step describes how to adjust the cables to ensure proper
functionality of the cable interlock setup . Cable adjustments are
made with the large bulkhead nuts
ONLY
and with all breakers
OPEN
. Nuts on the rod ends should not be moved .
Begin by adjusting or verifying that the threaded section of all
bulkhead fittings are approximately centered on the cable mounting
brackets, allowing for room to adjust in either direction . Hand tighten
the nuts at this time .
Perform initial adjustments on the driven (long rod) end of cable
until the gaps identified in
are as
specified .
show the position of the
interlock assembly driven “And” lever based on the state of the
interconnected breakers .
Gap
0 mm
Connected
breaker open
Connected
breaker open
Gap
0–10 mm
Figure 13. Driven “And” lever position with interconnected
breakers open
Figure 14. Driven “And” lever position with interconnected push
breaker open and pull breaker closed
Figure 15. Driven “And” lever position with interconnected push
breaker closed and pull breaker open
Gap
0–4 mm
Connected
breaker open
Gap
0 mm
Connected
breaker closed
Gap
0–4 mm
Connected
breaker closed
Connected
breaker open
