Eaton IZMX40 Montageanweisung Seite 5

Installation and Removal Instructions
for Series NRX Drawout Breaker
Two-Way Cable Interlock Kit
Raise cable assembly
until threaded portion
of bulkhead fitting
enters slotted hole in
cable bracket (threads
show above bracket)
Figure 10. Step 9 - Mounting Cable Assembly in Cable Bracket
Upper Nut
(tighten against spacer
tube)
Compression
Spring
Swivel
Fitting
Lower Nuts
Figure 11. Step 9
Step 10: This step describes how to attach the driven (long rod) end of a
cable to its interlock assembly and cable bracket on another breaker. This
is accomplished by repeating Step 9, except the driven end does not
utilize a compression spring between the swivel and outer nut. Replace
short spacer tube on cable with the long spacer tube from this kit.
Install the second cable.
Driven End Cable Bracket
Figure 12. Step 10
Slide smaller
diameter portion of
bulkhead fitting into
cable bracket slot.
Trip Arm
Swivel
Fitting
Driven End
(long rod)
Lower
Nuts
Rubber
Boot
Outer
Bulkhead
Nut
Bulkhead Nut
Instruction Leaflet IL01301059E
Figure 13. Step 10
Step 11: This step describes how to adjust the cables. Cable
adjustments are made with the large bulkhead nuts only. Smaller nuts
on the rod ends should not be moved. Adjustments are made with all
breakers OPEN.
Ensure all bulkhead fittings are still approximately centered on cable
mounting bracket, allowing for adjustment room in either direction.
Repeat items 8 and 9 of Step 9 if any bulkhead fitting requires
centering.
Perform initial adjustments on driven (long rod) end of cable (refer to
Figure 13).
Too much clearance – adjust both bulkhead nuts to retract cable
housing.
No clearance – advance cable housing in a similar manner.
For additional adjustment length – bulkhead nuts on other end of
cable can be used.
Torque cable bulkhead nuts on both ends to 100 -120 in-lbs (11 – 13
Nm) when proper clearance is attained on driven end.
Lower Nuts
Figure 14. Steps 10 and 11
EATON CORPORATION www.eaton.com
effective September 2012
Upper Nut
Long Spacer
Tube
Threaded
End
Swivel
Fitting
Upper Nut
Swivel
Fitting
Long Spacer
Tube
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