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Battery Cabinet Installation
55
Powerware
®
FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide : Rev A www.powerware.com
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
QFE1.8kVA,2.1kVA,3.1kVA,4.3kVA,5.3kVA,and7kVA
FE 1.15 kVA, 1.4 kVA, 1.8 kVA, 2.1 kVA, 3.1 kVA, 4.3 kVA, 5.3 kVA, and
7kVA
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
)forall
applications with the following exceptions:
:
18 kVA models use #1/0 (53.49 mm
2
) battery cables.
:
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 UPS must have a DC disconnect switch or a removable plug so you
can disconnect external batteries from the UPS.
:
FE/QFE 500 VA–3.1 kVA models have a removable plug at the UPS;
the battery cabinet may also have a DC switch.
:
Most FE/QFE 4.3–18 kVA models have a DC switch at the 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 front cover panel.