BATTERY CABINET INSTALLATION
Eaton FERRUPS Rack Mount UPS (850 VA–7 kVA) Installation Guide
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164201425 Rev 1
www.eaton.com/powerquality
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Standard and Phillips screwdrivers
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Volt-ohm meter
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Hammer
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7/16
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socket wrench
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Two 7/16
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box-end thin-wall wrenches
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Electrical tape
Electrical
Table 5. Nominal DC Battery Voltage
Models
Nominal Battery
Voltage
FES/QFES 850 VA–1.4 kVA
12 Vdc
FES/QFES or FER/QFER 1.8–7 kVA
48 Vdc
The battery cable or wire used is #1 AWG (42.11 mm
2
) for all
applications with the following exception:
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If the batteries must be some distance from the UPS, you may need
to install larger battery cables between the battery cabinets and the
UPS. Using long cable runs and larger diameter cables may require
modifications inside the UPS; call your service representative if you
did not order the longer, larger-diameter cable with the UPS.
The external battery system must have a DC disconnect switch or a
removable plug so you can disconnect external batteries from the UPS.
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RBC-1 and RBC-2 battery cabinets have a DC connector between the
UPS and battery cabinet(s).
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RBC-3 battery cabinets have a DC switch on top of the battery
cabinet underneath a hinged panel.
Summary of Contents for FERRUPS
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