PowerWalker VFI 6000T LCD - Manual (Page 48)

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13) Press the button of one UPS, each UPS would start to turn
on, after turning on, the UPSs should work parallel in the Line
mode.
How to join a new UPS to a parallel system:
1) First the parallel system must be installed one main
maintenance mechanical switch or static switch.
2) Regulate the output voltage of the new UPS separately: check
if the output voltage difference between the new UPS and the
parallel system is less than 0.5V.
3) Ensure the bypass of the parallel system is normal and the
bypass setting is “enable”, remove the cover plate of
maintenance switch on the rear panel of each UPS, the UPS
system would transfer to bypass automatically, set the own
maintenance switch of each UPS from “UPS” to “BPS”.
4) Set the main maintenance switch or static switch from “UPS” to
“BPS”, switch off the main output breaker and the main input
breaker, the UPSs would shut down.
5) Ensure the UPSs shut down totally, add the new UPS and
reinstall the new UPS parallel system by following step 1) to 9)
of last chapter - “install a new parallel UPS system”.
6) Switch on the main input breaker and the main output breaker,
and set the main maintenance switch or static switch from
“BPS” to “UPS”, then set the UPS own maintenance switch
from “BPS” to “UPS” and screw the maintenance cover plate
back again. Press the button of one UPS, each UPS would
start to turn on, after turning on, the UPSs should work parallel
in the Line mode.
How to remove a single UPS from a parallel system:
1) First the parallel system must be installed one main
maintenance mechanical switch or static switch.
2) Ensure the bypass is normal and the bypass setting is “enable”,
remove the cover plate of maintenance switch on the rear panel
of each UPS, the UPS system would transfer to bypass