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Eaton Ferrups FX UPS P-164000906 Eaton Ferrups FX User’s Guide P-164000906—Rev 05
Table 10. UPS Nominal Battery Voltage
Model
Nominal Battery Voltage
FX3100
48Vdc
The battery cable or wire used is #1 AWG (42.11 mm2) for all applications.
•
If the batteries must be some distance from the UPS, you may need to install larger battery cables in
conduit between the external battery cabinets and the UPS to help with EMC performance.
The UPS must have a DC disconnect switch or a removable plug so you can disconnect external batteries from
the UPS.
•
FX 3.1 kVA models have a removable plug at the UPS; the external battery cabinets have a DC breaker.
Figure 10. Eaton FX3100 UPS wiring to EBM
To UPS/EBM
DC+
DC-
FROM EBM
DC+
DC-
+
-
+
-
TO UPS/EBM
DC+
DC+
DC-
DC-
FROM EBM