Cutler-Hammer Busway Systems - Eaton Canada
Cutler-Hammer Busway Systems - Eaton Canada
Cutler-Hammer Busway Systems - Eaton Canada
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<strong>Cutler</strong>-<strong>Hammer</strong><br />
layer of epoxy insulation (5), which is<br />
a Class B (130 o C) material. This epoxy<br />
insulation is applied by the fluidized bed<br />
process, which ensures a smooth, even,<br />
continuous insulation and eliminates hand<br />
taping.<br />
An optional 50% internal ground bus bar<br />
(2) is available in either copper or aluminum.<br />
Joint<br />
Bus bars on the left-end (bolt end) of a<br />
busway section are flared out and have a<br />
closed slot. The left end also has an insulated<br />
captive joint bolt. This joint bolt must<br />
be tightened to 30 ft.-lbs. torque for 2-inch<br />
and 2 1/2-inch wide bus bars, and 60 ft.-lbs.<br />
torque for 3-inch and wider bus bars. For<br />
6-inch, 6 1/2-inch and 7 1/2-inch wide bus bars,<br />
two joint bolts are used to assure good<br />
electrical contact between bus bars. Bolt<br />
retainers, which keep bolt head from turning,<br />
can easily be moved to the opposite<br />
side of the duct by removing two #10-32<br />
retainer screws. Also captive to the left-end<br />
are two belleville washers which evenly<br />
distribute pressure over the entire contact<br />
area.<br />
High strength molded polyester glass joint<br />
insulators are inserted between opposite<br />
phases of bus bars and between bus bars<br />
and the housing. This provides adequate<br />
over the surface electrical clearances and<br />
mechanical strength for the joint.<br />
Bus bars on the right-end (slot end) of a<br />
busway section are flared and have an<br />
open slot to accept the captive joint bolt.<br />
Joint insulators on this end also have an<br />
open slot.<br />
Joint covers with captive hardware<br />
complete the housing joint giving a good<br />
mechanical connection between sections.<br />
The same universal joint cover is used for<br />
all ratings of Pow-R-Way, 225-5000<br />
Amperes, both plug-in and feeder.<br />
Note: Pow-R-Way plug-in design with bus<br />
bars under 3-inch wide (225-600 Aluminum<br />
or 225-800A Copper) requires 10 1/4<br />
inches to joint centerline when passing<br />
through walls or floors. This is necessary<br />
to keep joint covers clear of walls and<br />
floors.<br />
March 2001<br />
Exploded View of Joint Details<br />
Application Data<br />
30-560<br />
Page 5<br />
Pow-R-Way ® <strong>Busway</strong> <strong>Systems</strong>
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