Lucent Technologies CPS4000 - Figure 3-1: Recharge Factor Vs. Recharge Time

Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
3 - 2 Engineering and Ordering Issue 13 December 2000
Engineering Information, continued
Rectifier Sizing
(Redundant
Systems)
In redundant systems, a spare on-line rectifier is included so that the loss
of any one rectifier will not cause the available plant capacity to fall
below the required minimum installed rectifier capacity. Thus, the loss
of a rectifier will not affect the normal system operation nor will it cause
the batteries to discharge, and will allow the batteries to recharge in the
required time.
In cases where the additional spare rectifier will provide the required
battery recharge current, the mirc satisfies the requirements for both
non-redundant and redundant systems. In other cases, rectifiers in
addition to the redundant rectifier may be required to provide the battery
recharge current. Typically, the number of spare rectifiers required for a
redundant system is the larger of one spare rectifier or 200% of the rated
load.
Figure 3-1: Recharge Factor vs. Recharge Time