Eaton Ampgard AR, Instruction Booklet

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Instruction Booklet IB48088
Effective July 2021
Instructions for Eaton’s 7.2 kV Ampgard AR
(arc resistant motor control center)
(Compliant to IEEE C37.20.7-2017)
EATON
www.eaton.com
Figure 28. Seam covers installation.
11. Install the seam cover, part #87C1093H15, over the adjoining
front and rear vertical flanges as shown in
Figure 28
. Use
1/4”-20 bolts with flat washers, lock washers, and nuts included
in the hardware kit #25A4361G14.
12. Install the gas deflectors, part #87C1093H05, to cover the ends
of the top seam cover as shown in
Figure 28
. Use 1/4 in.-20
tap R/ TR screws with flat washers included in hardware kit
#25A4361G14.
13. After all the plenum assemblies are fully secured and if the top
cable entry was picked, go to the next step, otherwise jump to
step 18.
14. The tops of the cableway must be anchored to the plenum roof.
This requires access to the top of the plenum.
15. Align all the holes of the cableway cutout in the plenum roof
with the holes on top flanges of the cableway.
16. Only use the middle holes on each side to anchor the cableway
to the plenum roof as shown in Figure 29 . Attach it using 1/4
in.-20 tap R /TR screws and flat washers included in hardware kit
#25A4361G12.
17. Each of the cableways are provided with lead plate for the top
openings. These lead plates are attached to the plenum roof
using 1/4 in.-20 tap R/TR screws and flat washer included in
hardware kit #25A4361G12.
18. Once all plenum assemblies are installed on top of the lineup,
torque all fasteners per Table 6 .
Table 6. Plenum assembly torque specifications.
Nominal diameter -
in.
Threads
per inch
Tightening torque -
ft-lbs. (N m)
1/4 20 7 (9.49)
5/16 18 15 (20.34)
3/8 16 26 (35.25)
m WARNING
ALL SEAM CONNECTIONS IN THE PLENUM ASSEMBLY MUST BE COVERED
BY SEAM COVERS OR GAS DEFLECTORS.
FAILURE TO INSTALL THESE COVERS AND DEFLECTORS WILL VOID
COMPLIANCE TO IEEEC37.20.7-2017
PLEASE CONTACT THE FACTORY FOR ANY QUESTIONS..