Dale Power Solutions Ltd
User Manual
18
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Wiring units in parallel
You can operate 2, 3 or 4 units in parallel.
Caution:
Each unit requires its own battery bank. You cannot use a common battery bank for
more than one unit working in parallel mode.
When operating units in parallel you must not use the built-in bypass as it is rated for one unit
only. If you need a bypass for the parallel system it must be wired as an external item.
WARNING!
BEFORE ATTEMPTING TO WIRE THE UNITS, ENSURE ALL BREAKERS ARE IN THE OFF
POSITION.
To connect two or more units in parallel:
1. Wire the power cables and optional signals as described above.
2. If a system bypass is required, wire in a separate MCB capable of carrying the total system load
current as shown below. This is not required if you have only two units working in N+1 mode and the
load never exceeds the rating of a single unit.
Figure 8 Units connected in parallel