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Eaton 9395XC UPS 1200kW/1200kVA, 1350kW/1350kVA or 1500kW/1500kVA 164001079—Rev 01
6.
Open the input and bypass feeder circuit breakers for the UPS being shut down.
The UPS is now completely shut down.
External Communications Failure alarm is active on remaining online UPSs. This is an expected event and
will clear upon UPS restart.
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To restart a single UPS from a shutdown state:
1.
Do not close the MOB for the UPS being restarted.
2.
Close UPS input and bypass feeder circuit breakers for the UPS being restarted.
3.
On the UPS being restarted, observe the UPS control panel display becoming active, indicating logic
power.
4.
On the UPS being restarted, press the
Overview
button on the navigation menu. The
Power Maps
screen
is displayed (see
).
5.
On the UPS
Power Maps
screen, verify the UPS status is SHUTDOWN.
6.
Verify no alarms are active on UPS being restarted.
7.
Verify the External Communications Failure alarm has cleared and no other alarms are active on the online
UPSs.
8.
On the
Controls
screen, select Go Online (see
). Select “Go Online” when prompted.
If Auto Bypass is enabled (factory default), the critical load is immediately supplied after pre-charge by the
bypass source in Bypass mode from all UPSs, until the inverter turns on and the UPSs transfer to Online
mode. The status indicator on the UPS control panel indicates the UPS is in Bypass mode. If Auto Bypass
is not enabled, the UPS outputs remain off until the UPSs turn on the inverter.
9.
Press the SELECT pushbutton on the UPS Command menu bar.
NOTE
If the UPS is starting on a bus with other online paralleled UPSs, the UPS will not go to
bypass during startup. The UPS will start, sync to the other UPSs online, and go online.
10. Verify the following messages display sequentially on the UPS status line:
DC STARTING, BYPASS
ONLINE
The rectifier and inverter turn on. The inverter continues to ramp to full voltage.
It takes approximately one minute for the UPS to achieve Online mode.
The Online status indicator is illuminated. The UPS status indicates ONLINE. The UPM status indicates
ONLINE.
11. Close the battery breaker for the UPS being restarted.
12. Select the UPS to Bypass
13. Place the other units in Bypass
14. Close the MOB.
15. Place all units to Online.
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