TOSHIBA
5.0
Operating the UPS (Cont'd)
5.5
Battery Recharging
The graph below shows the typical voltage requirements for recharging the UPS unit's
batteries.
5 - 6
Model
Vmax.
Vmin.
Charge
600 VA
41.4
29.2
0.4 (A)
800 VA
55.2
38.9
0.4 (A)
1000 VA
69.0
98.6
0.4 (A)
1200 VA
82.8
58.3
0.4 (A)
1500 VA
82.8
58.3
0.4 (A)
2000 VA
110.4
77.8
0.4 (A)
500 VA Plus
41.4
29.2
0.4 (A)
750 VA Plus
55.2
38.9
0.4 (A)
1000 VA Plus
69.0
48.6
0.4 (A)
1500 VA Plus
82.8
58.3
0.4 (A)
Rated battery voltages
Period 1
Period 2
Period 3
Time
Current
Voltage
Vmax.
Vmin.
current
Battery
charge
voltage
Fully
charged
Discharge
shut-off point
Charging
0.4 amp (A)
0
0
The recharge process usually consists of three periods. During the first period, the
current is maintained at approximately 0.4 amperes. In the second period, the constant-
voltage control starts and the current gradually decreases as the batteries continue to
charge. In the third period, a slight current flows into the batteries to keep them fully
charged. After a complete discharge, a full recharge usually requires 24 hours (90%
recharge in 8 hours) for the 500 through 750 VA models and 30 hours (90% recharge in
8 hours) for the 800 through 2000 VA models.
The chart depicted below shows the rated maximum and minimum battery voltages,
and the charge current for each of the sizes.
Summary of Contents for 1400 Plus Series
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