Smart Tower UPS 10-30KVA User Manual
Chapter 3 Operation
18
3.3 Battery Management
3.3.1 General function
The following functions should be performed by trained and qualified professionals with specified
software.
1.
Constant current boost charging
The charge current can be set.
2.
Constant voltage boost charging
Set the charge voltage according to battery type.
For Valve Regulated Lead Acid (VRLA) batteries, the maximum boost charge voltage should not
exceed 2.4V/cell
3.
Float charge
The float charge Voltage can be set as required by the type of battery.
For Valve Regulated Lead Acid (VRLA), float charge voltage should be between 2.2V and 2.3V.
4.
Float charge temperature compensation (optional)
The temperature compensation coefficients can be set depending on battery type.
5.
End of discharge (EOD) protection
When the battery voltage falls below the EOD, the battery converter will automatically be off,
disconnect the battery to avoid excessive battery discharge. EOD is adjustable from 1.6V to 1.75V per cell
(VRLA) or 0.9 to 1.1 V per
nickel-cadmium
(Ni-Cd) cell.
6.
Battery low voltage alarm time
Setting range, prior to the battery discharge termination 3 to 60 minutes, the default is 5 minutes.
3.3.2 Advanced Functions (Battery Self-test Maintenance)
Battery periodic discharge, and each time discharge 30% capacity. The actual load must exceed 30%
of the UPS nominal capacity. If the load is below 30%, it does not perform automatic discharge
maintenance. The periodic interval can be set from every 30 to 360 days. The battery self-test can be
disabled.
Conditions—batteries have been float charged for at least 5 hours, remain more than 30% of their rated
capacity, the load within 20~100% of UPS rated capacity
Be triggered—manually operate the command “Battery Maintenance Test” on LCD panel
3.4 Battery Protection
The following functions should be performed by trained and qualified professionals with specified
software.
1.
Battery Low voltage alarm
The battery under-voltage pre-warning occurs before the end of discharge. After this pre-warning, the
battery should have the capacity for 3 remaining minutes discharging with full load. The time is user
configured from 3 to 60 minutes.
2.
End of discharge (EOD) protection
Before the battery voltage falls below the EOD, the battery converter will automatically be off,
disconnect the battery to avoid excessive battery discharge. EOD is adjustable from 1.6V to 1.75V per cell
(VRLA) or 0.9 to 1.1 V per
nickel-cadmium
(Ni-Cd) cell.
3.
Battery Circuit Breaker (BCB) Alarm (Optional)
The BCB disconnecting occur this alarm. The batteries connect to UPS through the external battery
circuit breaker (BCB). BCB is closed manually, the switch trips when there is battery over-temperature or
electricity leakage by the UPS control circuit controlling.
