EnerSys Outback Power EnergyCell 1000XLC, Руководство пользователя, Страница: 25 / 36

900-0258-01-00 Rev A
25
Operation
Commissioning
After installing the battery bank, measure the overall open circuit voltage of the bank as well as
each individual cell, and record these values. If the system voltage is less than 50.6 Vdc
(or individual cell voltage less than 2.11 Vpc), apply a freshening charge to the bank as follows:
To apply a freshening charge:
Perform a bulk charge with a recommended charge current of 168 Adc but not to exceed the
maximum limit of 200 Adc to 58 Vdc (2.42 Vpc).
Follow the bulk charge with an Absorb charge at 58 Vdc for 12 hours.
Re-measure open circuit voltage. If system voltage is less than 50.6 Vdc (2.11 Vpc)
continue to step 4.
Proceed with an additional charge for 4 hours using a target voltage of 60 Vdc (2.5 Vpc).
Charging
The XLC1000 battery should be charged
using a three-stage charging process.
Bulk Stage
The bulk stage is a constant-current stage.
The charge current is maintained at a
constant high level (not to exceed 200 Adc
per battery) until the voltage reaches 58 Vdc
(2.42 Vpc). At the end of the bulk stage the
battery will be at 85 to 90% SoC.
At excessive current rates, the battery’s
conversion efficiency becomes less and it
may not become completely charged.
Absorption Stage
Absorption is a constant-voltage stage.
It is established upon reaching the
Absorb voltage setting of 58 Vdc
(2.42 Vpc). The charger limits the current
flow to only what is necessary to maintain this voltage. A high current is required to raise the
voltage to the absorption level, but less is required to maintain it there. As long as the
absorption level is maintained, the requirement causes a tapering current. The amount of
absorption current will vary with conditions, but will typically decrease to a very low number.
This “tops off the tank,” leaving the battery at 100% SoC. The 1000XLC should undergo a 3.5
hour absorption stage during normal daily use.
Figure 18 Three-Stage Charging