Starting The Distributed Bypass System In Bypass Mode - Eaton Power Xpert Plus 1 Installation And Operation Manual

17. Verify the following messages display sequentially on the UPS status line:
7.4.2

Starting the Distributed Bypass System in Bypass Mode

If the inverter output of the distributed bypass system is not available and the critical
load needs to be energized:
In Bypass mode, the critical load is not protected from commercial power interruptions and abnormalities.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. On the System Status screen, verify the UPS status is SHUTDOWN and the UPM
11. On the System Status screen, select the
12. Press the
t
Power Xpert 9395 UPS (450–550 kVA) Installation and Operation Manual
DC STARTING, CHARGER OFF
INVERTER STARTING
INVERTER SYNCING
ONLINE, CHARGER ON
The rectifier and inverter turn on. The inverter continues to ramp up to full
voltage.
Once the inverter reaches full voltage, all UPS output contactors (K3) close and
the bypass circuits open. Power is now supplied to the critical load in Online
mode from all UPSs. It takes approximately one minute for the UPSs to achieve
Online mode.
The Online status indicator is illuminated. The UPS status indicates ONLINE. The
UPM status indicates ONLINE, CHARGER ON.
Unfasten the front door latches and swing the doors open on all of the UPSs (see
Figure 4‐2 on page 4-4).
If the UPSs contain input breakers (CB1), verify that all input breakers are open.
Close all MOBs.
Close all UPS input feeder circuit breakers.
Close all UPS Bypass input feeder circuit breakers.
If the UPSs contain input breakers (CB1), close all input breakers.
Close the doors and secure the latches.
Observe the UPS control panel displays becoming active, indicating logic power.
On any UPS, press the
CONTROLS
Status screen is displayed.
status is SHUTDOWN.
pushbutton on the System Status menu bar. The Bypass
CONTROLS
Control Command screen is displayed.
UPS OPERATING INSTRUCTIONS
C A U T I O N
pushbutton on the main menu bar. The System
command.
BYPASS
S
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