Eaton BladeUPS - Page 51

Eaton BladeUPS 5 kVA to 60 kVA (N+1) User’s Guide 164201649—Rev 14 37
Table 4. BladeUPS Bar Wiring Specifications
BladeUPS Bar
Terminal Block Terminal Position
BladeUPS Bar Wire
Function
Terminal Wire Size
Rating*
Tightening
Torque
Output
1 [Output A] Phase 1 Out
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.
31.1 Nm
(275 lb in)
2 [Output B] Phase 2 Out
3 [Output C] Phase 3 Out
Input
4 [Input A]
Phase 1 In
5 [Input B]
Phase 2 In
6 [Input C]
Phase 3 In
Neutral
7
Neutral
8
Neutral
9 Neutral
Safety Ground Ground Ground 2 mm
2
(14 AWG) to
52 mm
2
(1/O)
6 Nm (50 lb in)
* Use 13.3 mm
2
(6 AWG) 90°C copper wire minimum.
NOTE If a 4-pole Automatic Transfer Switch (ATS) is used to connect the UPS to a generator or alternative input source, it
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.
10. Remove the Wireway Access Cover.
• Install and attach approved electrical conduit to the holes previously added to the conduit landing
plate.
• Pull approved electrical conductors for the system, and connect the input, output, and ground wires to
the BladeUPS Bar top entry terminal block according to Figure 18 and Table 4.
• Route the three input phases and the input neutral through the mounted or loosened ferrite assembly.
11. Replace the cabinet top panel:
• Locate the cabinet top panel.
• Align the top panel with the protruding mounting screws in the front (three screws) and back
(two screws).
• Push down the top panel to snuggly fit over the screws.
• Tighten the top panel screws.
12. Replace the trim:
Top Entry Installation