UPS OPERATING INSTRUCTIONS
Power Xpert
9395 UPS (450–550 kVA) Installation and Operation Manual
164201701 Rev 3
www.eaton.com/powerquality
7-11
10.
Close the battery breaker.
11.
Verify no alarms are active.
12.
On the System Status screen, select the
UPS
command.
13.
Press the
CONTROLS
pushbutton on the System Status menu bar. The UPS
Control Command screen is displayed.
14.
On the UPS Control Command screen, select
GO TO ONLINE
.
15.
Press the
SELECT
pushbutton on the UPS Command menu bar.
If Auto Bypass is enabled (factory default), the critical load is immediately
supplied by the bypass source, in Bypass mode, until the inverter turns on and
the UPS transfers 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
output remains off until the UPS transfers to Online mode.
16.
Verify the following messages display sequentially on the UPM status line:
DC STARTING, CHARGER OFF
INVERTER STARTING
INVERTER SYNCING
ONLINE, CHARGING
The rectifier and inverter turn on. The inverter continues to ramp up to full
voltage.
Once the inverter reaches full voltage, the UPS output contactor K3 closes and
the static switch turns off. Power is now supplied to the critical load in Online
mode. 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, CHARGING
.
7.3.2
Starting the UPS in Bypass Mode
If the inverter output of the UPS is not available and the critical load needs to be
energized:
C
A
U
T
I
O
N
In Bypass mode, the critical load is not protected from commercial power interruptions and abnormalities.
1.
Unfasten the front door latch and swing the door open (see Figure 4‐2 on
page 4-4).
2.
If the UPS contains input breaker CB1, verify that input breaker CB1 is open.
3.
Close the UPS input feeder circuit breaker.
4.
Close the UPS Bypass input feeder circuit breaker.
5.
If the UPS contains input breaker CB1, close input breaker CB1.
6.
Close the door and secure the latch.
7.
Observe the UPS control panel becoming active, indicating logic power.
