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54 Operating Manual BX900 S1
Installing the hardware
© cognitas. Gesellschft für Technik-Dokumentation mbH 2010 Pfad: C:\Programme\FCT\tim_app\tim_local\work\WALTER\OBJ_DOKU-4949-006.fm
With 4 power supply units, you must connect units 2 and 3 to the first
source (phase) and units 5 and 6 to the second. Thus 2+2 redundancy is
supported; the system continues to run if one source fails, provided the
remaining 2 power supplies are sufficient to deliver the required power.
Power system with 3 AC sources (phases) available
With 6 power supply units, you must connect units 1 and 4 to the first AC
source (phase), units 2 and 5 to the second, and units 3 and 6 to the third.
Thus 4+2 redundancy is supported; the system continues to run if one
source fails, provided the remaining 4 power supplies are sufficient to
deliver the required power.
With 3 power supply units, you must connect each one to a different
source. Thus 2+1 redundancy is supported; the system continues to run
if one source fails, provided the remaining 2 power supply units are
sufficient to deliver the required power.