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11.
The Remote EPO feature opens all contactors in the UPS cabinet and isolates power from
your critical load. Local electrical codes may also require tripping upstream protective
devices to the UPS.
12.
A jumper wire must be connected between pins 8 and 9 on TB1, if the normally-closed
EPO contact is not used.
13.
Remote EPO wiring should be a minimum of 22 AWG.
Table W. Remote EPO
REMOTE
EPO
SWITCH
(NO)
REMOTE
EPO
SWITCH
(NC)
Remote EPO switch rating is 24 Vdc, 1A minimum.
NOTE:
other circuits.
Powerware
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
®
TWISTED
WIRES
This switch must be a dedicated switch not tied into any
DESCRIPTION:
DRAWING NO:
REVISION:
Installation Information
7 (NO)
UPS TB1
9 (RTN)
8 (NC)
INTERFACE WIRING INSTALLATION
NOTES AND TERMINAL LOCATIONS
164201535---8
DATE:
B
SHEET:
5 of 12
111504
A-37
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