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Pwr. & Grnding. Guide
35013379 02 October 2007 791
Compatibility
Issues of power
supplies
z With the exception of standalone models, power supplies with the same model
number are always compatible when installed in the same backplane.
z Do not use a standalone power supply in combination with any other supply in the
same backplane.
z Do not mix different models of power supplies on the same backplane, except in
the following combinations:
z One 140CPS11420 and one 140CPS11410 power supply may be installed for
configurations consuming more than the rated current of one supply. In this
case the total load capacity is 16 A @ 60° C.
z One 140CPS12420 and one 140CPS22400 power supply may be used for
configurations requiring power for uninterrupted system operation with
redundancy between an AC voltage source and a 24 Vdc voltage source. In
this case, the total load capacity is 8 A @ 60° C. Three redundant supplies can
also be mixed in a backplane. See Redundant Power Supplies, p. 789 for
details.
z One 140CPS12420 and one 140CPS42400 power supply may be used for
configurations requiring power for uninterrupted system operation, with
redundancy between an AC voltage source and a 48 Vdc voltage source. In
this case the total load capacity is 8 A @ 60° C. Three redundant supplies can
also be mixed on a backplane. See Redundant Power Supplies, p. 789 for
details.
z Do not mix DC input power supplies into the same backplane as the
corresponding AC version.
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com
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