Eaton Power Xpert 9395 550/275, Installation And Operation Manual

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UPS Installation Plan and Unpacking
3-18 Power Xpert
TM
9395 550/275 UPS (225–550 kVA) Installation and Operation Manual 164201716—Rev 8 www.eaton.com/powerquality
3.2.4 UPS System Interface Wiring Preparation
Control wiring for features and options should be connected at the customer interface terminal blocks located
inside the UPS.
WARNING
Do not directly connect relay contacts to the mains related circuits. Reinforced insulation to the mains is
required.
Read and understand the following notes while planning and performing the installation:
l
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.
l
Use Class 2 wiring methods (as defined by the NEC) for interface wiring up to 30V.
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The wire should be rated at 24V, 1A minimum.
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Use shielded twisted-pair wires for each input and return or common.
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All interface wiring and conduit is to be provided by the customer.
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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.
l
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.
l
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.
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The UPS Battery Aux and 48 Vdc Shunt Trip signal wiring from the UPS must be connected to the DC source
disconnect device.
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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.