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9.
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.
10.
A jumper wire must be connected between pins 8 and 9 on TB1, if the normally-closed
EPO contact is not used.
Table P. Remote EPO
REMOTE
EPO
SWITCH
(NO)
REMOTE
EPO
SWITCH
(NC)
Remote EPO switch rating is 24 Vdc, 1A minimum.
NOTE: This switch must be a dedicated switch not tied into
any other circuits.
Powerware
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev A
®
7 (NO)
UPS TB1
9 (RTN)
8 (NC)
TWISTED
WIRES
DESCRIPTION:
INTERFACE WIRING INSTALLATION
NOTES AND TERMINAL LOCATIONS
DRAWING NO:
164201535---8
REVISION:
A
Installation Information
SHEET:
5 of 5
DATE:
062504
A-23
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