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37
Figure 27 Battery circuit breaker box connections
NOTE
1. The signal cables in this figure must be shielded and double-insulated.
2. Connect the Pes (Protection Earth) of the UPS cabinet and BCB box to the same point.
DPN U3813078 Rev. N
(7.9mm)
(Typ. 4 places)
.31" dia.
.38"
(9.5mm)
(137mm)
(819.2mm)
32.3"
2.5"
(63.5mm)
(98mm)
3.9"
31.5"
(800.1mm)
15.0"
(381mm)
20.0"
(508mm)
(101.2mm)
10.8"
Top View
(274mm)
5.4"
4.0"
8.3"
(211.7mm)
TB1
Circuit Breaker
COM Black
N.O. Red
N.C. Blue
J10.2
J10.3
(-)
Midpoint
(+)
(GND)
(-)
(+)
(-)
(+)
From Customer’s Battery System
(field-supplied and field-installed)
Connect to UPS Module
(field-installed)
Midpoint
(-) (+)
(-)
(+)
(-) (+)
Midpoint Busbar Detail
(3) 1/2" (12.7mm)
dia. knockouts
for control wiring
conduit entry
(3) 1/2" (12.7mm)
dia. knockouts
for power wiring
conduit entry
(refer to top dimension)
NOTES:
1. NEMA 1 enclosure provided which is suitable for
wall mounting only. Approximate weight is 60 lb.
2. Hardware for connecting cables to the breaker supplied.
3. Circuit breaker, Cutler-Hammer FD4125ED13D15A02 for 20/30 kVA;
FD4070ED13D15A02 for 10/15 kVA
4. Color: IBM off-white.
5. Mount enclosure and pull all cables into enclosure before installing dry contacts.
6. Low voltage wiring needs to enter from the top of the enclosure, in separate conduit from power cables.
7. Line side power connections to lugs: (1) # 6AWG per connection for 10 to 15 kVA.
(1) # 2AWG per connection for 20-30 kVA to lugs:. load side power connections to busbars; see detail.
8. Power cables must be sized to limit voltage drop from battery system to UPS to be a maximum 4 VDC.
2
3
1
4
5
6
Front View
Bottom View
CB
Load
Side
CB
Line
Side
TB1
72 Cells
72 Cells
1"
(25.4mm)
.5"
(12.7mm)
1.93"
(49mm)
.46"
(11.8mm)
.47"
(11.8mm)
.62"
(15.8mm)