Eaton 9390 - Page 193

Eaton® 9390 (100–160 kVA) UPS Installation and Operation Manual 164201604—Rev F 178
FFiigguurree 8866.. 116644220011660044--88 IInntteerrffaaccee WWiirriinngg IInnssttaallllaattiioonn NNootteess aanndd TTeerrmmiinnaall LLooccaattiioonnss ((CCoonnttiinnuueedd))
032406 B
164201604-8
DESCRIPTION:
DATE:
: T E E H S : O N G N I W A R D
REVISION:
INTERFACE WIRING INSTALLATION
NOTES AND TERMINAL LOCATIONS
6 of 15
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. This switch must be a dedicated latching‐type switch not tied into any
other circuit.
12.A jumper wire must be connected between pins 1 and 2 on TB1, if a normally‐closed EPO
switch is not used or a normally‐open EPO switch is used.
13.Remote EPO wiring should be a minimum of 22 AWG.
Table U. Remote EPO
1 (NC)
4 (COMMON)
TWISTED
WIRES
UPS TB1
REMOTE
EPO
SWITCH
REMOTE
EPO
SWITCH
2 (COMMON)
3 (NO)
(NC TYPE)
(NO TYPE)
TWISTED
WIRES OR
LATCHING‐TYPE
SWITCH ONLY
INSTALL JUMPER
IF SWITCH NOT
INSTALLED THIS
POSITION
SWITCH ONLY
LATCHING‐TYPE
Remote EPO switch rating is 24 Vdc, 1A minimum.
NOTE: This switch must be a dedicated latching‐type switch not
tied to any other circuits.
Installation Information
For Internal Use Only