EXTERNAL BATTERY CABINET INSTALLATION
Eaton FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide
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164201403 Rev B
www.eaton.com/powerquality
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Table 27. Nominal DC Battery Voltage
Models
Nominal Battery
Voltage
QFE 500 VA, 700 VA, 850 VA, 1.15 kVA, and 1.4 kVA
12 Vdc
FE
500 VA, 700 VA, and 850 VA
24 Vdc
QFE 1.8 kVA, 2.1 kVA, 3.1 kVA, 4.3 kVA, 5.3 kVA, and 7 kVA
FE
1.15 kVA, 1.4 kVA, 1.8 kVA, 2.1 kVA, 3.1 kVA, 4.3 kVA, 5.3 kVA,
and 7 kVA
48 Vdc
FE and QFE 10 kVA, 12.5 kVA, and 18 kVA
120 Vdc
The battery cable or wire used is #1 AWG (42.11 mm
2
) for all
applications with the following exceptions:
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18 kVA models use #1/0 (53.49 mm
2
) battery cables.
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If the batteries must be some distance from the UPS, you may need
to install larger battery cables between the external 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 UPS must have a DC disconnect switch or a removable plug so you
can disconnect external batteries from the UPS.
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FE/QFE 500 VA–3.1 kVA models have a removable plug at the UPS;
the external battery cabinet may also have a DC switch.
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Most FE/QFE 4.3–18 kVA models have a DC switch at the external
battery cabinet. However, some may have a removable plug at the
cabinet or between the UPS and the batteries, and others may have
an external DC switch. FE/QFE 4.3–18 kVA models also have a DC
switch behind the UPS front cover panel.