Eaton 93PR Series User And Installation Guide

25-75 kW
User's and Installation Guide 65
2. Perform the LOAD OFF procedure (see Chapter 6.4.8 De-energizing the Critical Load. The input, output,
and bypass backfeed contactors open, the battery breaker or disconnect is tripped, and the power module is
turned off.
DANGER
PowerispresentinsidetheUPScabinetuntiltheupstreaminputfeedercircuitbreakerisopened.
3. Unfasten the front door latch and swing the door open.
4. Open the rectifier input switches, bypass input switch, neutral switch if included in the UPS system, and
verify that battery breaker
is open, and close the front door.
5. Open the UPS input and bypass feeder circuit breakers.
6. Repeat steps 3-5 for all UPSs in the system.
6.4.8 De-energizing the Critical Load
A UPS system Load Off is initiated by the
Load Off
button
from Controls
>
System Controls
screen. This
button can be pressed to control the UPS output. The
Load Off
button de-energizes the critical load and
powers down the UPS system.
The UPS system (including Bypass) remains off until restarted.
1. Press
Load Off
.
The shut down screen appears, providing a choice to proceed or abort the shutdown.
NOTE
AllpowertothecriticalloadislostwhenLoadOffisselectedinthefollowingstep.Youshouldusethisfeature
onlywhenyouwanttode-energizethecriticalload.
2. To shut down the UPS, press
Load Off
. To abort the shutdown, press ABORT. When
Load Off
is selected,
the input, output, and bypass backfeed contactors open, the battery breaker or disconnect is tripped, and all
the UPSs in the system are turned off.
DANGER
PowerispresentinsidetheUPScabinetuntiltheupstreaminputfeedercircuitbreakerisopened.
3. To restart the UPS system, follow the procedure in Chapter 6.4.1 Starting the UPS system in Double
Conversion Mode or Chapter 6.4.2 Starting the UPS system in Bypass Mode.

Eaton 93PR Series Specifications

General

Brand	Eaton
Model	93PR Series
Category	UPS
Language	English