Installing The Internal Batteries - Eaton BladeUPS User Manual

Table 5. BladeUPS Bar Wiring Specifications
BladeUPS Bar
Terminal Block
Neutral
Safety Ground
* Use 13.3 mm
NOTE If a 4-pole Automatic Transfer Switch (ATS) is used to connect the UPS to a generator or alternative input source, it
Five and six UPS preassembled systems only.
3 3 . . 1 1 2 2 I I n n s s t t a a l l l l i i n n g g t t h h e e I I n n t t e e r r n n a a l l B B a a t t t t e e r r i i e e s s
Terminal Position
1 [Output A]
Output
2 [Output B]
3 [Output C]
4 [Input A]
Input 5 [Input B]
6 [Input C]
7
8
9
Ground
2 (6 AWG) 90°C copper wire minimum.
may interrupt the UPS input neutral during its transition between sources. This UPS should always have an input
source neutral connected at the bypass input terminals. This neutral must be continuous and uninterrupted; even if
there are no phase-to-neutral loads connected to the UPS output. If the UPS is fed from a 4-pole ATS that interrupts
the neutral, a delta-to-wye isolation transformer, with its secondary neutral bonded to ground, must be placed in line
with the bypass input of the UPS. This will provide an uninterrupted neutral to the UPS, regardless of the position of
the ATS neutral contact. If an overlapping neutral or make-before-break ATS switch is used, the neutrals must
overlap for a minimum of 50 msec during the transition. In these cases, a transformer is not needed. For the
BladeUPS a neutral break of over 50ms may be acceptable Please consult with Eaton engineering resources to
confirm this is will not create an operational issue.
BladeUPS Bar Wire
Function
Phase 1 Out
Phase 2 Out
Phase 3 Out
Phase 1 In
Phase 2 In
Phase 3 In
Neutral
Neutral
Neutral
Ground
CAUTION
Eaton BladeUPS 5 kVA to 60 kVA (N+1) User's Guide 164201649—Rev 14

Installing the Internal Batteries

Terminal Wire Size Tightening
Rating*
(275 lb in)
13.3 mm 2 (6 AWG) to
177 mm 2 (350 kcmil)
Wire gauge depends on
overcurrent protection
rating required
Wire gauge depends on
overcurrent protection
rating required
Reference the NEC,
NFPA 70 for wire sizing.
2 mm 2 (14 AWG) to 6 Nm (50 lb in)
52 mm 2 (1/O)
Torque
31.1 Nm
41