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Battery Cabinet Installation
57
Powerware
®
FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide : Rev A www.powerware.com
4. The battery cabinet ground (or earth) must be connected to the
UPS chassis ground (or earth).
You must make a good connection to the battery cabinet
chassis ground (or earth). If the 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 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
CAUTION
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, call your service representative.