Front Panel Layout (All Units) - Toshiba 4200 series Operation Manual

The recharge process usually consists of three periods. During the first period, the charging
current is maintained at approximately 38.0 amperes. This current is the maximum value that
can be used to charge the batteries (for minimal recharge time) while assuring safety and long
battery life. In the second period, constant-voltage control starts and current gradually
decreases as the batteries charge to their normal fully charged state. In the third period, a
slight "trickle" current continues to flow into the batteries to keep them fully charged and
"floating" at the normal DC Voltage level. A full recharge usually requires approximately 24
hours (90% recharge in 10 hours) after a complete discharge.
The following chart shows the rated maximum and minimum battery voltages, and the charge
current for each of the sizes while the unit is maintained in a 75°F ambient.
6.5

Front Panel Layout (All Units)

Refer to the following illustration for the entire UPS front panel operating procedures.
TOSHIBA
Rated Battery Voltages
Model
V float
V min
I charge
23
75kVA
270.0 Vdc
210.0 Vdc
38.0 Amps
100kVA
370.0 Vdc
283.0 Vdc
38.0 Amps