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External Bypass Switch Installation
35
Powerware
®
FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide : Rev A www.powerware.com
NOTE 8 External UPS batteries are optional. The battery cable must not be
disconnected if a load is applied. Shut off the UPS before disconnecting the cable. See
“Battery Cabinet Installation” on page 53 for external battery cabinet installation.
NOTE 9 UPS output circuits must be installed in dedicated conduit and not shared
with other electrical circuits.
NOTE 10 The load fuse or circuit breaker should be sized to match the load current
requirements.
NOTE 11 For 208 Vac, use a step-up transformer. For 480 Vac, use a step-down
transformer. Use an isolation transformer with a 120/240 grounded center-tapped
neutral output. Do not use a buck/boost transformer.
NOTE 12 For 120/208/240 models, connect X1 on the UPS to L1 on the bypass switch;
for 208 Vac, connect the bypass switch L2 to the UPS XT1; for 240 Vac, connect the
bypass switch L2 to the UPS XT2.