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Eaton 93PS UPS 8–40 kW
6.
Close the UPS bypass input feeder circuit breaker.
7.
Wait for the UPS control panel display to become active and to indicate
logic power.
8.
Repeat steps 1-7 for each individual UPS in the system.
9.
In the home screen, press Controls.
The System controls screen appears.
10. In the System controls screen, check that the system status is SHUTDOWN.
11. In the System controls screen, press the Go online button.
If Auto Bypass is enabled (factory default), the critical load is immediately
supplied by the bypass source, in the bypass mode, until the inverter turns
on and the UPS transfers to the double conversion mode. The status
indicator on the UPS control panel indicates that the UPS is in the bypass
mode. If auto bypass is not enabled, the UPS output remains off until the
UPS system transfers to double conversion mode.
12. Wait for the following messages to appear sequentially on the System
controls screen:
STARTING
ONLINE
The rectifier and inverter turn on. The DC voltage continues to ramp up to
full voltage. Once the DC link reaches full voltage and the battery breaker
is closed, the UPS output relay K3 closes and the static switch turns off.
Power is now supplied to the critical load in the double conversion mode. It
takes approximately 20 seconds for the UPS system to achieve the double
conversion mode.
The UPS system is now operating in the double conversion mode. The green
status indicator for normal operation is illuminated in all the UPSs in the system.
7.3.2
In the bypass mode, the critical load is not protected from mains power
interruptions and abnormalities.
If the inverter output of the UPS is not available and the critical load needs to be
energized, perform the following procedure:
1.
Open the UPS front door.
2.
Check that the rectifier input switch S1 is closed.
3.
Check that the battery breaker CB1 is closed.
4.
Close the front door.
5.
Close the UPS input feeder circuit breaker.
6.
Close the UPS bypass input feeder circuit breaker.
7.
Wait for the UPS control panel to become active and indicate logic power.
8.
Repeat steps 1-7 for each single UPS in the system.
©
Eaton Corporation plc 2016. All rights reserved.
Starting the UPS system in the bypass mode
CAUTION
Revision: 003
Document ID: P-164000493
User's and installation guide
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