Kikusui PFX2000 Series, Operation Manual, Page: 96 / 104

A-10 Appendix PFX2000
A.2 Power Regeneration Function
The power consumption can be reduced on the PFX2021 system (combination of
the PFX2021 and PFX2332) using the regeneration function. This function extracts
a portion of the battery discharge power from a discharging charge/discharge power
supply unit and uses the power to run the fan or to charge other batteries of other
units in the same frame.
When the regeneration function is active, the REGENERATION LED (blue) on the
front panel illuminates.
Fig. A-14 Regeneration Function on the PFX2021 System
Power regeneration is normally performed on a discharging unit under the following
conditions.
Batter voltage greater than or equal to 12 V
Discharge current greater than or equal to 1 A
The regenerated power is used within the frame; it is not fed back to the commercial
power supply system. Therefore, the regenerated power that is left over turns into
heat as with the conventional unit, and the heat is dissipated by the fan. Therefore,
more power is reused when charge tests and discharge tests are mixed in a single
frame.
Power saving effect by the regeneration function
It is dif fi cult to express the power saving effect produced by the regeneration func-
tion on the entire system, because the operation of each unit on the charge/discharge
system changes frequently.
As an example, if there are two units that are discharging (regenerating power) and
one unit that is charging at the speci fi ed ratings in the same frame, the power sup-
plied to the system (200 VAC input) may be reduced to 1/3 as compared with a sys-
tem without the regeneration function. See Fig. A-15.
This effect not only reduces the amount of power used to run the system, but also
suppresses the heat dissipation of the entire system.
Charge/Discharge Power
Supply Unit (PFX2021)
Charge/Discharge Power
Supply Unit (PFX2021)
Re
generated po
wer
Discharge
Charge
Battery under test
Battery under test
5-Unit Large Capacity Frame (PFX2332)