Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 29)

Mounting and Wiring Your 1336 IMPACT Drive 2-11
User-Supplied Enclosures
If you are supplying your own enclosure for the 1336 IMPACT drive,
you can mount your drive within an enclosure or you may mount the
drive to let the heatsink extend outside the enclosure.
F Frame drives with the suffixes -BPR and CPR (Standalone) and
RPR and WPR (Common-bus) have the following enclosure
requirements:
A) Dimensions of enclosure needed to accomodate the drive are
nominally 90 by 35 by 20 in.
B) A1200 cfm enclosure ventilating fan is required to be installed by
the customer or installer.
C) For the -BPR and -CPR only, additional mounting instructions
specifying the relative locations of the drive and choke so that factory
supplied interconecting cables can be utilized are supplied.
If you have a G frame, do not mount the drive with the heatsink
extended outside of the enclosure.
If you have an H frame and you are supplying your own piped-in
cooling for the 1336 IMPACT drive enclosures or are calculating
room cooling requirements, refer to the following table. NEMA
Type 1 enclosures from the factory will have exhaust fans and will
not require additional enclosure cooling, but may require room
ambient cooling so as not to exceed 40
°C.
The H frame drive has been tested only as a complete unit including
the enclosure. The enclosure is an integral part of the cooling
package. The enclosure dimensions are provided in Chapter 4. The
required fan volume is 2600 CFM, and air enters at the front bottom
of the enclosure and exits out the top. Any change to this
configuration is at the customers risk. Air must not be restricted at
top or bottom of the enclosure to ensure good air flow over the
capacitor and bus bars, as well as to assist the heat sink fans to
maintain the 800HP rating.