Electrical Connections—UPS
Liebert
®
APM
™
26
Figure 12 Busbars—External 900mm battery cabinet
3.2.8 Accessory Fuses and Backfeed Breaker Wiring
Two fuse blocks provide power for the backfeed breakers (standard) and the BDSi (optional). The fuse
blocks are at the lower right of the front of the Liebert APM UPS. Refer to
for additional
details. See for fuse holder locations.
The backfeed breaker fuse block provides 120V nominal provided from the UPS output (L-N) and the
fuse is rated for 8 amps.
shows the backfeed breaker wiring.
The BDSi fuse block provides 208V nominal from the UPS output (L-L) and the fuse is rated at 8A.
The BDSi power wiring is shown in
and
.
NOTES
1. Dimensions are in inches [mm].
2. Control wiring and power wiring must be run in separate conduits.
3. Emerson recommends using only copper cables.
4. All wiring must be in accordance with national and local electrical codes.
5. If the battery cabinet is attached to the UPS, Emerson will
supply the interconnect cables.
UAM05022
Rev. 0
Alber Battery
Monitoring
35.4" (900mm)
TOP VIEW
BOTTOM VIEW
78.7"
(2000mm)
.56" Dia.
(14.3mm)
.44" Dia.
(11.1mm)
DETAIL A
See
Detail A
Left Side View
Panel Removed
Front View
Door Removed
Right Side View
Panel Removed
37.5" (953mm)
DC Connection
Busbars
Ground
Bus
3.31
"
(84mm)
3.31
"
(84mm)
1.75
"
(45mm)
1.75
"
(45mm)
1.65
"
(42mm)
1.65
"
(42mm)
1.75
"
(45mm)
