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For applications requiring a high level of availability, the consequences of a power supply failure can be very serious: loss of production in industry, safety problems in infrastructure (e.g. lighting in tunnels).
Connecting power supplies in parallel (redundancy) is one way of ensuring continuity of service, as the probability of a failure affecting two power supplies simultaneously is very low.
The part number of the redundancy module is ABL8RED24400.
This redundancy needs to be provided by a module which is itself very rugged and which improves operation:
Correct operation is not guaranteed if a power supply other than an ABL8RPx24xx0 or ABL8WPS24x00 is used.
The choice of power supply depends on the nominal current to be supplied.
Direct connection of power supplies in parallel (without a redundancy module) has the following disadvantages: