Starting The Upms; Transfer From Double Conversion Mode To Bypass Mode - Eaton 93PM User And Installation Manual
30–50kw
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Also See for 93PM:
- Installation and operation manual (158 pages) ,
- User and installation manual (126 pages) ,
- Installation manual (70 pages)
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7.6 Starting the UPMs
Make sure that load level does not exceed single UPM capacity.
To start an individual power module in double conversion mode:
1.
Unfasten the front door latch and swing the door open.
2.
Verify that rectifier input switch S1 and battery breaker CB1 are closed, 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.
Press the Controls button in the main menu. The System controls screen is displayed.
6.
7.
On the System controls screen, the UPS status should indicate SHUTDOWN.
8.
Verify no alarms are active.
On the System controls screen, press Module controls. Select module screen is displayed.
9.
10.
Select UPM 1.
11.
The UPM 1 control screen is displayed and the UPM status should indicate SHUTDOWN.
12.
On the UPM 1 control screen, select Start module.
13.
Verify the following messages display sequentially on the UPM status line:
IDLE
ACTIVE
The UPM 1 rectifier and inverter turn on and the UPM will transfer to double conversion mode
and supply the critical load.
7.7 Transfer from Double conversion mode to Bypass mode
To transfer the critical load to Bypass mode, perform the following procedure:
NOTE
In Bypass mode, the critical load is not protected from commercial power interruptions and
abnormalities.
Press the Controls button in the main menu. The System controls screen appears.
1.
2.
Press the Go to bypass button in the System Controls screen. The UPS transfers to 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.
3.
The UPS is now operating in Bypass mode and the BYPASS status indicator is illuminated. The
UPM status indicates IDLE. The system status indicates ON BYPASS.
P-164000249
Revision 1
30–50kW
User's and Installation Guide
49
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