Powerware UPS20-30kVA User Manual

UPS 20-30 kVA, 230 V 0/60 Hz output

User’s Guide

1026743
Revision B

Start-up and operation

Start-up procedure

Note!

Before start-up make sure that UPS installations have been carried out correctly

and ground connections of both UPS units and parallel module have been

connected. Check also that the XSlot HotSync cards are installed correctly

an the communication line between UPSs is connected according to figure

Communication cabling wiring.

When installation is completed correctly the start procedure can be started.

Note!

If some settings are changed from User settings the same changes need to be done

separately to all of the UPSs in the system.

Carry out the following procedure to each UPS you want to have in system.

1. Turn the battery and input circuit breakers to ON position.
2. UPS will enter a stand-by mode and starts to charge batteries with a cooling fan

operational. Output is without the voltage in the stand-by mode.

3. Push any key of the control panel to enable the functions of the LCD screen.
4. Select unit number in parallel system: Unit #1, Unit #2, Unit #3 or Unit #4. Select:

SETTINGS

USER SETTINGS

PARALLEL OPERATION SETTINGS

PARALLEL UNIT

NUMBER

. Select minimum units to support load: 0-4. Select: SETTINGS

USER SETTINGS

PARALLEL OPERATION SETTINGS

MINIMUM UNITS TO SUPPORT LOAD

Do the following item (item 6) only for one UPS, which belongs to the system.

6. Return to main menu and select TURN SYSTEM ON.

All the UPSs shall check their internal functions, synchronize to bypass and start to supply the
load.

Note

After the first start the load sharing of the system needs to be calibrated. Before

starting the calibration the system needs to support some load.

7. Select: SETTINGS

USER SETTINGS

PARALLEL OPERATION SETTINGS

START AUTO

CALIBRATION