Starting The Ups In Bypass Mode; Transfer From Normal To Bypass Mode - Eaton 93E Operation Manual
300/400 kva (380/400/415v)
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Also See for 93E:
- Installation and operation manual (133 pages) ,
- User and installation manual (26 pages) ,
- Instructions manual (18 pages)
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UPS Operating Instructions
6.3.2 Starting the UPS in Bypass Mode
If the inverter output of the UPS is not available and the critical load needs to be energised:
In Bypass mode, the critical load is not protected from commercial power interruptions and
abnormalities.
To start the UPS system:
1.
Unfasten the front door by lifting the latch from the bottom and turning to the right (counterclockwise) and
swing the door open (Figure 6-1).
2.
If the UPS contains an input breaker, verify that the input breaker is open.
3.
If output breaker is installed by customer, verify that the output breaker is open.
4.
If bypass input breaker is installed customer, verify that the bypass input breaker is open.
5.
If input feeder circuit breaker is installed customer, close the input feeder circuit breaker.
6.
If bypass input breaker is installed customer, close the bypass input breaker.
7 .
If the UPS contains an input breaker, close the input breaker.
8.
Close the door and secure the latch.
9.
Close the external battery breakers.
10. Observe the UPS control panel display becoming active, indicating logic power.
11. Verify no alarms are active.
12. Select the CONTROLS symbol on the main menu bar. The System Control screen is displayed.
13. If not already selected, select UPS on the System Control screen.
14. On the UPS System Control screen, select the LOAD OFF
pushbutton.
15. If output breaker is installed customer, close the output breaker.
6.3.3 Transfer from Normal to Bypass Mode
To transfer the critical load to Bypass mode:
In Bypass mode, the critical load is not protected from commercial power interruptions and
abnormalities.
1.
Select the CONTROLS symbol on the main menu bar. The System Control screen is displayed.
2.
If not already selected, select UPS on the System Control screen.
3.
On the UPS System Control screen, select the NORMAL
pushbutton.
The UPS transfers to Bypass mode.
The BYPASS status indicator is illuminated. The power module remains on.
Power is present inside the UPS cabinet.
6-12
Eaton 93E UPS (300/400 kVA, 380/400/415V) Installation and Operation Manual
CAUTION
BYPASS command, then press the RETURN
CAUTION
BYPASS command, then press the RETURN
WARNING
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