Installation
Eaton BladeUPS 12 kVA Maintenance Bypass Cabinet Installation and Operation Manual P-164000130—Rev 1 www.eaton.com/powerquality 3-7
3. Connect phase A, B, C, and N output power wiring from the UOB in the MBC (see Figure 3-4) to the
output terminals in the UPS cabinet.
NOTE The input phase rotation must be A B C clockwise.
4. Connect phase A, B, C, and N input wiring from the RIB in the MBC (see Figure 3-4) to the input terminals
in the UPS cabinet.
5. Install customer-supplied branch circuit breakers (Cutler
-Hammer Bolt-on Type BAB or QBHW) into the
distribution panel board.
6. Wire branch circuits according to the branch circuit break
er manufacturer's ratings and instructions, and
national and local electrical codes (MBC output is prewired to the panel board).
7. Connect phase A, B, C, and N power wiring from the MBC output breakers or terminals and neutral
terminals to
the critical load.
8. Connect phase A, B, and C input wiring from the facility power to the SIB in the MBC.
9. Verify system grounding is according to local and/or national electrical wiring codes.
10. If wiring interface connections, proceed to paragraph 3.3; otherwise, continue to the next step.
11. When all wiring is complete, reinstall the safety shields.
12. Close the inside distribution panel doors and secure with the retained screws.
13. Reinstall the front door panels and secure with the retained screws.
3.3 BladeUPS and MBC Communication and Signaling
In a parallel BladeUPS system, only one UPS is required to be connected by signal input wiring to the MBC.
This UPS transmits bypass instructions to the other UPSs through the pull chain and Powerware Hot Sync CAN
Bridge Card communication interface.
NOTE The parallel BladeUPS system must be fully interconnected using the pull chain and
Powerware Hot Sync CAN Bridge Card communication. Refer to the Eaton
®
BladeUPS
®
User’s Guide (Preassembled and Standard Systems) For use with Eaton
BladeUPS 5.1 kVA to 60 kVA (N+1) systems for more information.
Overview of communication set up between the MBC and the UPS:
l
Connect the communication wiring between the MBC and the BladeUPS
l
Install the Industrial Relay Card (IRC) in the BladeUPS X-Slot communication bay
l
Set the go to bypass wiring between the MBC and the BladeUPS chassis
l
Set the IRC for bypass signal output in BladeUPS firmware
l
Enable the Force Bypass mode feature in BladeUPS firmware
The IRC must be installed in the UPS and wired to the MBC. The communication signal wiring between the
MBC and the BladeUPS IRC allows the UPS status signal inputs to be transmitted to the MBC. The IRC has
isolated dry contact (Form-C) relay outputs for UPS status, such as Utility Failure, Low Battery, UPS Alarm/OK,
or On Bypass.
After the communication signal wiring
is connected directly from the MBC to the BladeUPS chassis, the UPS
setting for bypass signal output can be set up using the UPS LCD menu display. When the setting is enabled,
the IRC sends the signal to the “UPS on Bypass” LED indicator on the MBC front panel to turn On (green) or
Off (n
ot illuminated).
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