Transfer From Double Conversion Mode To Bypass Mode; Transfer From Bypass To Double Conversion Mode - Eaton 93PR Installation And Operation Manual

1. Unfasten the front door latch and swing the door open.
2. (If the UPS contains) Verify that rectifier input switch, output switch, bypass switch are closed
the UPS system, and close the front door.
3. Close the UPS input feeder circuit breaker.
4. Close the UPS bypass input feeder circuit breaker.
5. Observe the UPS control panel becoming active, indicating logic power. Repeat steps 1-5 for
each single UPS in the system.
6. Press the Controls button in the main menu. The System Controls screen appears.
7. On the System Controls screen, the system status should indicate SHUTDOWN.
8. Press the Go to bypass button in the System Controls screen.
9. The critical load is immediately supplied by the bypass source, in Bypass Mode.
10. The UPS system is now operating in Bypass Mode and the BYPASS status indicator is
illuminated.
6.3.3.

Transfer from Double Conversion Mode to Bypass Mode

To transfer the critical load to Bypass Mode, perform the following procedure:
In Bypass Mode, the critical load is not protected from commercial power interruptions
and abnormalities.
1. Press the Controls button in the main menu. The System controls screen appears.
2. Press the Go to bypass button in the System Controls screen. The UPS system transfers
to Bypass Mode and the critical load is immediately supplied by the bypass source. If the
bypass source is not available, the power process or remains on and an alarm sounds.
3. The UPS system is now operating in Bypass Mode and the BYPASS status indicator is
illuminated. The UPM status indicates READY. The system status indicates ON BYPASS.
Power is present inside the UPS cabinets.
6.3.4.

Transfer from Bypass to Double Conversion Mode

To transfer the critical load to Double Conversion Mode, perform the following procedure:
1. Press the Controls button in the main menu. The System controls screen appears.
2. Press the Go online button on the System controls screen. The UPS system transfers to
double conver sion mode. If enough UPM capacity is not available, the system remains on
bypass and an alarm sounds.
Copyright © 2021 Eaton Corporation plc. All rights reserved.
NOTE
DANGER
Eaton 93PR 60-1200 kW UPS
Installation and Operation Manual
107