103 Eaton® 9390 (100–160 kVA) UPS Installation and Operation Manual 164201604—Rev F
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The following procedures provide instructions for operating the UPS or parallel system. For a description of the
UPS control panel functions, see Chapter 8 Using the Control Panel.
NNOOTTEE 11 Before starting the UPS or parallel system, ensure all installation tasks are complete and
a preliminary startup has been performed by authorized service personnel. The
preliminary startup verifies all electrical interconnections to ensure the installation was
successful and the system operates properly.
NNOOTTEE 22 Read this section of the manual and have thorough knowledge of parallel and UPS
operation before attempting to operate any of the controls.
NNOOTTEE 33 The UPS displays two minutes of battery runtime at the initial startup. After a 24-hour
charging period, the UPS automatically runs a battery test and the correct battery
runtime displays.
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99..11..11 SSttaarrttiinngg tthhee UUPPSS iinn NNoorrmmaall MMooddee
To start the UPS system:
1. Close the UPS input feeder circuit breaker.
2. If the UPS is dual feed, close the UPS Bypass input feeder circuit breaker.
3. Observe the UPS control panel display becoming active, indicating logic power.
4. Press the CCOONNTTRROOLLSS pushbutton on the main menu bar. The System Controls screen appears.
5. On the System Controls screen, the power module (PM) status should indicate SHUTDOWN.
6. Press the NNOORRMMAALL pushbutton on the System Controls menu bar.
If Auto Bypass is enabled, the critical load is immediately supplied by the bypass source, in Bypass mode,
until the inverter turns on and the UPS transfers to Normal mode. The status indicator on the UPS control
panel indicates the UPS is in Bypass mode. If Auto Bypass is not enabled, the UPS output remains off until
the UPS transfers to Normal mode.
7. Observe the following messages appear sequentially on the power module (PM) status line:
DC STARTING
INVERTER STARTING
INVERTER SYNCING
READY
ONLINE
The rectifier and inverter turn on. The inverter continues to ramp up to full voltage.
8. Close the battery breaker any time after INVERTER SYNCING or CLOSE BATTERY appears on the display.
Once the inverter reaches full voltage, and the battery breaker is closed, the UPS output contactor K3
closes and the static switch turns off. Power is now supplied to the critical load in Normal mode. It takes
approximately 1 minute for the UPS to achieve Normal mode.
9. The UPS is now operating in Normal mode and the NNOORRMMAALL status indicator is illuminated.
UPS Operating Instructions
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