Preparation For Battery Installation - Eaton Ferrups FX User Manual

Preparation for Battery Installation

Table 10. UPS Nominal Battery Voltage
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
20 Eaton Ferrups FX UPS P-164000906 Eaton Ferrups FX User's Guide P-164000906—Rev 05
Model
FX3100
To UPS/EBM FROM EBM
DC+ DC- DC+ DC-
+ +
- -
Nominal Battery Voltage
48Vdc
TO UPS/EBM FROM EBM
DC+ DC+
DC- DC-