Delta Electronics 1Phase CliQ II DIN Rail DRP024V060W1BA User Manual
Page 12
Switch Mode Power Supply DRP024V060W1BA
12/13
Rev: 00,
1/10/2011
Redundancy & Parallel Operation with ORing Diode
See picture below for a typical Redundant/Parallel operation using CliQ II Series Power Supplies.
Power Supply Unit 1 (PSU1) and Power Supply Unit 2 (PSU2) are connected through a twin diode
where Anode 1 (A1) is connected to the +Ve of PSU1 and A2 is connected to the +Ve of PSU2 and
both output ground are shorted together.
The output of PSU1 and PSU2 is drawn from the Cathode K of the twin diode, making the Power
Supply work in Redundant/Parallel operation.
Redundant Operation:
When 2 Power Supplies are connected in parallel, the Power Supply with the higher output voltage
will take the maximum load while the other will operate in standby mode (at no load). In case the
first Power Supply fails, the second will take over the load and supplies the required power to the
end system.
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