Figure 27 Battery Circuit Breaker Box Connections - Emerson Liebert NX 10-30kVA Installation Manual

Figure 27 Battery circuit breaker box connections

3.9"
(98mm)
(137mm)
(3) 1/2" (12.7mm)
dia. knockouts
for control wiring
conduit entry
2.5"
(63.5mm)
TB1
32.3"
(819.2mm)
Bottom View
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.
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.
10.8"
(274mm)
5.4"
4.0"
(101.2mm)
Top View
20.0"
(508mm)
15.0"
(381mm)
(800.1mm)
Front View
.31" dia. (7.9mm)
(Typ. 4 places)
(3) 1/2" (12.7mm)
dia. knockouts
for power wiring
conduit entry
(refer to top dimension)
8.3"
(211.7mm)
31.5"
.38"
(9.5mm)
37
Connect to UPS Module
(field-installed)
1
2
3
4
5
6
TB1
(-) (+)
COM Black
N.O. Red
Circuit Breaker
N.C. Blue
(-) (+)
72 Cells
From Customer's Battery System
(field-supplied and field-installed)
.5"
(12.7mm)
.62"
(15.8mm)
(11.8mm)
Midpoint Busbar Detail
DPN U3813078 Rev. N
Options
Midpoint
CB
Load
Side
CB
Line
(-) (+)
Side
72 Cells
1"
1.93"
(25.4mm)
(49mm)
.46"
(11.8mm)
.47"