39
Vertiv I Liebert ITA2 30kVA I Manual
3.5.2
Parallel System Parameters Setting
The parallel parameters for all the UPSs in the parallel system should be set. As shown in
Figure 3-7.
Parallel
Output
Battery
Run mode
Normal
Voltage selection
220V
Frequency selection
Redundant
Yes
System parallel num
1
Sync parallel parameters
Auto,Bypa...
Figure 3-7 Settings for parallel parameters
The user can change these settings according to actual needs, refer to
Appendix 1 LCD
Parameters Setting
for details. After the change, press the last item 'Sync parallel parameters'
to validate the setting.
3.5.3
Power-On Commissioning For Parallel System
1. Set the parallel parameters of each UPS in the parallel system, then commission the
inverter.
The specific commissioning procedures are as follows:
a) Make sure that the output MCBs of all UPSs in the parallel system are open, and then
close the external input MCB of each UPS in the parallel system, the UPS is powered on at
the same time. If 1 + 1 parallel POD is configured, close the corresponding input MCB and
bypass MCB. At the same time, close the corresponding output MCB of the other UPS which
is being tested, and make sure that the corresponding output MCB of the other UPS is open.
After the UPS extenal output MCB or POD output MCB is closed, the UPS output
terminal block, POD output terminal block and load will be live, pay attention to
personnel safety to avoid electric shock. Note whether it is safe to feed power to
load.
b) The LCD displays the self-check screen, and the alarm indicator (red) and run indicator
(green) are ON at the same time for about five seconds.
c) After the rectifier has been in normal operation state for about 30 seconds, the rectifier
start-up is finished.
d) Refer to
3.5.2 Parallel System Parameters Setting
for the parallel parameters setting for
each UPS. Note whether there is an alarm of 'Parallel comm. Fail', if yes, clear the fault
according to Table 4-5. Carry out the following procedures if the UPS is running normally.
