Connecting The Power Supplies In Parallel - Helios ICT Platinum Series Instruction Manual

NOTE:
Although not recommended, it is possible to connect up to six Platinum
Series power supplies in parallel without using the Smart Parallel
feature. It is important that the parallel-connected power supplies
generally share the load equally. In order to achieve this, the size and
length of the connecting wires should be sized appropriately and of the
same gauge, and the wire lengths between the power supplies should
be virtually identical. To ensure proper load balancing without using
the Smart Parallel feature, use a voltmeter to independently measure
the output voltage of each power supply with the load connected, then
adjust the output voltage level of each power supply using the
Intelligent Power Control interface on the front of the Platinum Series
power supply until the outputs are within +/- 1% of each other.

4.3. Connecting the Power Supplies in Parallel

WARNING!
Do not use the Battery Backup/LVD option "BAT" terminal on
units connected in parallel, as there is a risk that the potential
load current could be higher than the rating of the internal low
voltage disconnect relay.
Otherwise damage to the unit, load, and/or personal injury may
occur if the battery output current through the "BAT" terminal
exceeds the rating for an individual supply.
Figure: 4 Back Panel Parallel Connections
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