UDD-SD-116/ Release Date: 31.12.2014/Rev No: 1/Rev. Date: 27.04.2015 16
＞Installation procedure:
① Install parallel wires. Two UPS to form an UPS parallel system, in order to ensure the
reliability of the parallel system, there is only one way to wire two UPS, use two parallel wires to
connect two UPS like the diagram showing below, connection looks like a circle. If three or more
than three UPS are needed, the connection is similar, you can refer to the diagram as below. How
many UPS unit, how many parallel wires you need.
Parallel system of two UPS wiring
Parallel system of three UPS wiring
Caution: For three UPS parallel system or more than three unites system type, please remove
the short pin CN3 on the parallel card as following pictures, Only keep the first unit and the last
unit shot pin(CN3) connected and remove the rest ones. Open the UPS cover, find the parallel
card, it’s installed on the rear panel. Take off the short pin CN3, then screw the cover back. It’s
advisable to contact to local dealer to operate, if you have to operate by yourself, please be sure
that you have cut off all the electrical connection, be careful the electric shocks from the UPS
inside.
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