56 NS3000 UPS 60KVA~120KVA User Manual
Battery Capacity Setting
Battery Capacity Setting sets the capacity value of the battery block .For example, if
the system uses 40 blocks of 12V/100AH batteries, the Battery Capacity Setting should
set to 100 Ah. If 240 cells of 2V/1000AH are used, the Battery Capacity Setting should
be set to 1000 Ah.
In case of there are more than one strings of battery in parallel, the battery capacity
setting value will be the times of the single string. For instance, if the configuration is
two strings of 40 blocks of 12V/100AH batteries, the battery capacity setting should be
set to 200AH.
The system sets current limits according to the battery capacity set. For the Lead-Acid
battery, the current limit is 0.2C, and for the LFPB, the current is 0.3C. For instance,
the 500kVA is configured to 40 blocks of 12V/500AH batteries, which can provides
total max charging current of 160A.Due to the current limits(0.2C) , the max charging
current will be 100A(0.2*500A).
Float and Boost Charge Setting
In boost charging, the system charges the batteries with constant current. After the
period, the system will enter the float charging.
For the Lead-Acid battery ,the default float charge voltage per cell is 2.25V, boost
charge voltage is 2.35V
；
For the LFPB, the default float and boost charge voltage per cell is 3.45V
EOD Voltage Setting
The EOD voltage 0.6C is the EOD voltage when the discharging current is larger than
0.6C;
EOD voltage 0.15C is the EOD voltage when the discharging current is less than
0.15C.EOD voltage decreases linearly as the EOD voltage Current increases from
0.15C and 0.6C, as shown in Figure5-3.
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
EOD voltage 0.15C
EOD voltage 0.6C
Figure 5-3
EOD voltage
For Lead-Acid battery, the cell voltage is suggested to set to 1.65V/cell at 0.6C, and
set to 1.75V at 0.15C
For the LFPB battery, the cell voltage is suggested to set to 2.7V/cell at both 0.6C and
0.15C.
Charging Current Percent Limit
This setting is for limiting the charging power, max current limit can be 20% of the rated
active power. The max current that one power unit can give according to the current
limit (in percentage) is shown in Table 6-1.
Summary of Contents for NS3000 Series
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