Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201764—Rev 14 41
• Use Class 1 wiring methods (as defined by the NEC) for interface wiring from 30V to 600V. The wire
should be rated at 600V, 1A minimum and 12 AWG maximum.
• Use Class 2 wiring methods (as defined by the NEC) for interface wiring up to 30V.
• The wire should be rated at 24V, 1A minimum.
• Use shielded twisted-pair wires for each input and return or common.
• All interface wiring and conduit is to be provided by the customer.
• When installing external interface wiring (for example, building alarm, relay output, battery breaker trip, and
X-Slot) to the UPS interface terminals, conduit must be installed between each device and the UPS
cabinet.
• Install the interface wiring in separate conduit from the power wiring.
• When installing internal interface wiring to X-Slot terminals, route the wiring through the internal opening in
the X-Slot communication bay.
• All building alarm inputs or remote features require an isolated normally-open contact or switch (rated at 24
Vdc, 20 mA minimum) connected between the alarm input and common terminal. All control wiring and
relay and switch contacts are customer-supplied.
• The building alarms can be programmed to display the alarm functional name.
• LAN drops for use with X-Slot connectivity cards must be provided by the customer.
• The UPS Battery Aux and 48 Vdc Shunt Trip signal wiring from the UPS must be connected to the DC
source disconnect device.
• A supplemental 48 Vdc shunt trip signal for the battery disconnect device is provided, but is not required
for normal operation.
• Battery Aux and 48 Vdc Shunt Trip wiring should be a minimum of 18 AWG.
• The REPO 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.
• The REPO switch must be a latching-type switch not tied to any other circuits.
• A jumper wire must be connected between pins 1 and 2 on TB1, if the normally-closed REPO contact is
not used.
• REPO wiring should be a minimum of 22 AWG and a maximum of 14 AWG.
• The REPO switch wiring must be in accordance with NEC Article 725 Class 2 requirements.
• The maximum distance between the REPO and the UPS cannot exceed 150 meters (500 feet).
• Alarm relay contacts have a maximum current rating of 5A and a switched voltage rating of 30 Vac and 28
Vdc.
• Alarm relay wiring should be a minimum of 22 AWG.
On all 9395 models that will be fed by a site generator at any time it is recommended to have an “On
Generator” sensing input connected and proven functional. This allows the UPS to optimize its operation with
the generator. This function includes reduced input current and battery current limits, slower walk-in to ease
the load step on the generator initially, and HIGH ALERT mode for ESS and VMMS operation.
HIGH ALERT mode is desired because any loads with a leading power factor will not be seen by the generator.
Rectifier operation will be much softer while on generator thereby increasing overall system stability
UPS Installation Plan and Unpacking
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