EXTERNAL BATTERY CABINET INSTALLATION
Eaton FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide S 164201403 Rev B
www.eaton.com/powerquality
59
4. The external battery cabinet chassis ground (or earth) must be
connected to the UPS chassis ground (or earth).
You must make a good connection to the external battery cabinet
chassis ground (or earth). If the external battery cabinet has a
terminal strip, you can make the ground connection at the terminal
strip ground (or earth) lug inside the cabinet. If not, you can make
the ground connection at one of the screws on the external battery
cabinet; to ensure a good connection, remove the paint under the
cabinet screw.
At the UPS, the procedure for connecting ground depends on your
model.
FE/QFE 500 VA–3.1 kVA: At the UPS, connect the ground wire to
the ground lug (the green screw on the back of the UPS). This UPS
ground (or earth) screw is marked with the label shown below.
CABINET
GROUND
Figure 21. Ground Label
FE/QFE 4.3–18 kVA: At the UPS, find the green/yellow terminal
strip next to the UPS battery terminals. This green and yellow
terminal strip is labeled “GROUNDING ELECTRODE TERMINAL;” it
also has the ground or earth symbol shown below. Connect the
ground wire to this ground terminal.
OR
Figure 22. Ground Symbol
C A U T I O N
Do not make connections to the RS-232 communication port if the UPS is connected to a
positive ground battery system. The RS-232 ground must be isolated to prevent equipment
damage. For assistance, contact your service representative.
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