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7.4.4 Parallel UPS
1. General single UPS operation procedure applies in a paralleled system.
2. Paralleled UPS startup:
Startup with utility power present
:
•
After connecting to the utility power, press and hold any UPS
’ On/Off
button for more than 1 second, all the UPS in the system will be powered
on and go to online mode at the same time.
•
When one of the UPS in a paralleled system is switched on to online
mode, the other UPSs in the system will automatically go to online mode
as soon as utility power is supplied to them.
Startup on battery (Cold Start):
•
Press the On/Off buttons of every UPS in the system until they go on
standby mode. Then Press and hold the On/Off button of one of the UPS
until the UPS starts up and goes into battery mode (inverter on). All UPSs
in the system will startup and go to battery mode at the same time.
•
When one of the UPS in a paralleled system is started on battery mode,
pressing the On/Off button of all other UPSs will activate them to go to
standby mode, and subsequently will automatically go to battery mode
(inverters on).
3.
Paralleled UPS Shutdown
Shutting down a single UPS:
•
Shutdown via the LCD screen Control menu, see 7.4.2 for more details.
Shutting down the entire paralleled system:
•
Press and hold the On/Off button of any UPS in the system for more than
3 seconds until the system goes into bypass mode. Disconnect the utility
power to power down the load.
7.4.5 Using common battery bank for a paralleled system
This product can be set to share a common battery bank for multiple UPS
paralleled together. Please contact your certified Eaton service provider to
perform this operation.
Ensure the battery capacity meets the full load requirement for the
parallele system:
For 2 UPS paralleled system, the common battery string’s rating
shall be greater than 18Ah;
For 3 UPS paralleled system, the common battery string’s rating