CHALLENGER SERIES 80‐120 KVA
PRODUCT DESCRIPTION
AG‐SD‐36 Rev. No:0 Rev. Date:15.11.2012 Publish No:1
2.2.5.
Maintenance
Mode
In maintenance mode, UPS equipped with a switch capable for not to be interrupted of the loads.
This switch was choosen to meet the full load.
2.3.
Battery
Management
Lead – Acid Batteries are used with UPSs as internal.
2.3.1.
Normal
Operation
Mode
Constant
Charge
Current
Current is limited to 0.1C untill the float reaches to charge voltage. (adjustable between 0.05C ‐
0.25C.) The applied current can not exceed maximum charge power.
Float
Charge
Depending on the battery discharge current the third percent energy of the battery is charged at
this level. Thanks to this level, batteries are kept ready for use at the highest capacity. For lead‐
acid batteries, this voltage varies between values 2.2‐2.35 V/cell This voltage may differ slightly
with temperature adaptation. Option of setting this coefficient is provided with our UPS. If the
temperature sensor is used, it is recommended to use.
Deep
Discharge
Protection
While the system operates on battery mode, if battery voltage has dropped below the discharge
level UPS shuts down and stops absorbing energy from the batteries. This value varies between
1.6‐1.75 V/cell for Lead‐Acid batteries, and for Ni‐Cd batteries between 0.9‐1.1 V / cell.
Low
Battery
Warning
While the system operates in battery (stored) mode, according to actual loads if the battery
capacity drops below its 40% value, it will give audible and visible alarms. This percentage value
is adjustable for user between 20%‐70%.