CHALLENGER SERIES 80‐120 KVA
INSTALLATION
AG‐SD‐36 Rev. No:0 Rev. Date:15.11.2012 Publish No:1
Inputs and outputs of more than one UPS are connected to each other; but definitely each battery
group is different from another, batteries can not be used in common. The following points should
be considered while placement of UPS in parallel system and their electrical connections are made:
UPSs connected in parallel must have the same power rating and must be the same series.
Devices must be running on the same firmware, if not, old firmwares must be updated.
Devices must be located as close as possible to each other (max. 6 x 110 cm paralleling cables.)
Each device must have its own neutral cable .
Each device must have its own ground connection.
UPS must be connected in paralel on the distribution panel and phases must be connected
correctly. (U
1
‐U
2
‐…‐U
N
), (V
1
‐V
2
‐…‐V
N
), (W
1
‐W
2
‐…‐W
N
).
Each UPS must have their own battery set, batteries cannot be used for more than one device at
the same time.
The length of all cables which are connected to distribution panel must be the same for the equal
current sharing.