Starting The Ups System In The Bypass Mode; Transferring From The Double Conversion Mode To The Bypass Mode - Eaton 93PM User And Installation Manual

Eaton 93PM UPS 30–200 kVA
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. If included inside the UPS system, check that the rectifier input switches
are closed.
3. Make sure that the battery breaker 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.
9. In the home screen, press Controls.
The System controls screen appears.
10. In the System Controls screen, make sure that the system status is shown
as SHUTDOWN.
11. In the System controls screen, press the Go to bypass button.
The critical load is immediately supplied by the bypass source, in the
bypass mode.
The UPS system is now operating in the bypass mode. The yellow bypass
status indicator is illuminated.
7.3.3
mode
In the bypass mode, the critical load is not protected from mains power
interruptions and abnormalities.
To transfer the critical load to the bypass mode, perform the following
procedure:
1. In the home screen, press Controls.
The System controls screen appears.
2. In the System controls screen, press the Go to bypass button.
The UPS system transfers to the bypass mode and the critical load is
immediately supplied by the bypass source. If the bypass source is not
available, the power processor remains on and an alarm sounds.
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Eaton Corporation plc 2017. All rights reserved.

Starting the UPS system in the bypass mode

Transferring from the double conversion mode to the bypass
CAUTION
CAUTION
Revision: 005 Document ID: P-164000249
User's and installation guide
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