Eaton 93PM UPS 480V Three-Wire – 100 kW Frame Installation and Operation Manual 164000227—Rev 07
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NOTE
To shut down a single UPS, MOBs with dual auxiliary contacts must be installed and
connected according to the procedure in
Chapter 4
UPS System Installation
,
Installing Interface Connections
section.
To shut down a single UPS:
1.
Open the MOB for the UPS being shut down.
UPS will load off. Logic power remains on.
2.
Open the UPS input feeder circuit breaker.
3.
If dual feed, open the UPS bypass feeder circuit breaker.
4.
Open all battery breakers, internal and external IBCs if installed.
The UPS is now completely shut down.
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To restart a single UPS from a shutdown state:
1.
Close the MOB for the UPS being restarted.
2.
Close the UPS input feeder circuit breaker for the UPS being restarted.
3.
If dual feed, close the UPS bypass feeder circuit breaker for the UPS being restarted.
4.
If IBCs are installed, close the battery breakers for the UPS being restarted.
5.
On the UPS being restarted, observe the UPS control panel display becoming active, indicating logic
power.
6.
Verify no alarms are active.
7.
On the UPS being restarted, tap the
CONTROLS
tab on the main menu navigation bar. The System
Control screen is displayed.
8.
Tap the
GO ONLINE
button.
9.
If requested, enter the Level 1 password. Default password is 1111.
The rectifier and inverter turn on. The inverter continues to ramp up to full voltage.
Once the inverter reaches full voltage, all UPS inverter switchgear close and the static switches turn off.
Power is now supplied to the critical load in dual conversion mode from all UPSs. It takes approximately
one minute for the UPSs to achieve the dual conversion mode.
The Normal status indicator is illuminated.
NOTE
If the UPS is starting on a bus with other online paralleled UPSs, the UPS will not go to
bypass during startup. The UPS will start, sync to the other UPSs online, and go online.
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To perform maintenance or service on the critical load, shut down power to the load:
1.
Turn off all equipment that is being powered by the UPS parallel system.
2.
Transfer the UPSs to bypass by performing the procedure in paragraph
Transfer from Double Conversion to Bypass Mode and Shut Down all UPMs
.
3.
Perform the Load Off procedure in paragraph
.
The inverter and bypass switchgear open, and the power module is turned off on all UPSs.
Summary of Contents for 93PM Series
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