2121
3) 3) Turn Turn off off the UPS the UPS systems that systems that are running. are running. After After all of all of thethe
running UPSs transfer to the Bypass mode, remove therunning UPSs transfer to the Bypass mode, remove the
maintenance cover board of each UPS and set themaintenance cover board of each UPS and set the
maintenance switch from “UPS” to “BPS”, then cut off the inputmaintenance switch from “UPS” to “BPS”, then cut off the input
breaker of each UPS.breaker of each UPS.
4) 4) If the If the UPS system UPS system that that is running is running is a is a stand-alone stand-alone UPS, youUPS, you
need to remove the short connection wire between JP1 and JP2need to remove the short connection wire between JP1 and JP2
on the terminal block.on the terminal block.
5) 5) Remove the Remove the cover cover board oboard of the f the parallel port parallel port on on the new the new UPS,UPS,
push one end of the parallel cable into the slot of the parallel kitpush one end of the parallel cable into the slot of the parallel kit
and screw up the connector; screw the cover board of theand screw up the connector; screw the cover board of the
parallel port back again.parallel port back again.
6) 6) Remove the Remove the maintenance maintenance cover cover board board of of the the new new UPS UPS and and setset
the maintenance switch from “UPS” to “BPS”.the maintenance switch from “UPS” to “BPS”.
7) 7) Turn Turn on on the the battery switch battery switch and and the the external input external input breaker of breaker of thethe
new UPS; measure the difference voltage between the outputnew UPS; measure the difference voltage between the output
line wires of new UPS and the parallel system to check if theline wires of new UPS and the parallel system to check if the
voltage difference between them is less than 1V. If thevoltage difference between them is less than 1V. If the
difference is less than 1V, close the output live wire breaker. Ifdifference is less than 1V, close the output live wire breaker. If
the difference is more than 1V, check if the wirings arethe difference is more than 1V, check if the wirings are
abnormal.abnormal.
8) 8) Remove the Remove the cover cover board board of thof the e parallel parallel port port located located on on the the UPSUPS
which has transferred to the maintenance bypass and push thewhich has transferred to the maintenance bypass and push the
other end of the parallel cable into the slot of the parallel kit andother end of the parallel cable into the slot of the parallel kit and
fasten the connector. Screw the cover board of the parallel portfasten the connector. Screw the cover board of the parallel port
back again.back again.
9) 9) Turn Turn on on the the input breakers input breakers of aof all of ll of the the UPSs (including UPSs (including the the newnew
UPS) in the parallel system. After all of the UPSs transfer to theUPS) in the parallel system. After all of the UPSs transfer to the
Bypass mode, screw the maintenance cover board back again.Bypass mode, screw the maintenance cover board back again.
10) Turn on each UPS in turn and observe their display. Make sure10) Turn on each UPS in turn and observe their display. Make sure
that each UPS displays normal and all the UPSs transfer to thethat each UPS displays normal and all the UPSs transfer to the
To Next Page
Loading...