UPS INSTALLATION PLAN AND UNPACKING
Eaton
Power Xpert 9395P UPS (300 kVA, 300 kW) Installation and Operation Manual
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P-164000563 Rev 1
www.eaton.com/powerquality
3-15
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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.
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Install the interface wiring in separate conduit from the power wiring.
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When installing internal interface wiring to X-Slot terminals, route the wiring
through the internal opening in the X-Slot communication bay.
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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 and may need to use Class 1 wiring, see above.
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The building alarms can be programmed to display the alarm functional name.
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LAN drops for use with X-Slot connectivity cards must be provided by the
customer and may need to use Class 1 wiring, see above.
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The UPS battery aux signal wiring from the UPS must be connected to the battery
disconnect device.
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A supplemental 48 Vdc shunt trip signal for the battery disconnect device is
provided, but is not required for normal operation.
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Battery aux and 48 Vdc shunt trip wiring should be a minimum of 18 AWG.
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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.
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The REPO switch must be a latching-type switch not tied to any other circuits.
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A jumper wire must be connected between pins 1 and 2 on TB1, if the
normally‐closed REPO contact is not used.
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REPO wiring should be a minimum of 22 AWG and a maximum of 14 AWG.
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The REPO switch wiring must be in accordance with NEC Article 725 Class 2
requirements.
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The maximum distance between the REPO and the UPS cannot exceed
150 meters (500 feet).
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Alarm relay contacts have a maximum current rating of 5A and a switched voltage
rating of 30 Vac and 28 Vdc.
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Alarm relay wiring should be a minimum of 22 AWG.
NOTE
On all 9395P 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.
3.2.5
Distributed Bypass Power Wiring Preparation
NOTE
For full-rated operation of a Distributed Bypass System when in Bypass or ESS mode, the line
frequency impedance of all conduction paths must be equal when assessed from the point where the Bypass
Power Source connects to the System Switchgear to the point where the Common Load connects to the
System Switchgear.
