Njoy Ranger 60KR User Manual page 21

4) Remove the cover of parallel share current cable port on the UPS,
connect each UPS one by one with the parallel cable and share current
cable, and then replace the cover.
5 Turn on the parallel system in AC mode:
a) Turn on the line input breaker of each UPS. If using dual-input
unit, please also turn on bypass input breaker. After all UPSs enter into
bypass mode, measure the output voltage between two UPSs for the
same phase to make sure the phase sequence is correct. If these two
voltage differences are near to zero, that means all connections are met.
Otherwise, please check if the wirings are connected correctly.
b) Turn on the output breaker of each UPS.
c) Turn on each UPS in turns. After a while, the UPSs should enter into
AC mode synchronously and then, the parallel system is now complete.
6 Turn on the parallel system in Battery mode:
a) Turn on the battery breaker and external output breaker of each
UPS.
b) Turn on any UPS. A few seconds later, the UPS will enter into
battery mode.
c) Turn on the next UPS in sequence until all the UPSs enter into
Battery mode and add to the parallel system. Now the parallel system is
now complete.
If you would like to have more information regarding the parallel
operation, please contact your supplier or service center for detail
parallel operation instruction.
2. Add new units into the parallel system
1) You can not add new unit into the parallel system when whole
system is running. You must cut off the load and shutdown the system.
2) Make sure all of the UPS are the parallel models, and follow the
wiring reference in section 2-4.
3) Install the new parallel system as per section 3-5.
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