Xantrex 817-1050, Руководство пользователя

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975-0784-01-01 55
Operating in Grid Mode
Bulk Stage
Bulk charge is the first stage in the charging process and provides
the batteries with a controlled, constant current. Once the battery
voltage rises to the absorption voltage threshold, the charger
switches to the absorption stage.
Absorption Stage
During the absorption stage, the Freedom XC begins operating in
constant voltage mode and the current falls gradually as the amp
hours are returned to the battery.
Table 6 Preset Absorption Voltage Settings
Battery Type Preset Absorption Voltage
Flooded 14.0V (Hot), 14.4V (Warm), 14.8V (Cold)
Gel 13.8V (Hot), 14.2V (Warm), 14.6V (Cold)
AGM 14.0V (Hot), 14.3V (Warm), 14.6V (Cold)
Custom
Absorption 14.6 (default),
changeable between 12.0 to 18.0
The Freedom XC transitions to the float stage if either one of the
following two conditions are met:
1. The charge current allowed by the batteries falls below the exit
current threshold, which is equal to 10% of the programmed
charge current and a minimum of 2A.
2. The Freedom XC has been in absorption for the programmed
maximum absorption time limit. The default is 6 hours.
NOTE: If there are DC loads on the batteries, the charger’s current may
never decrease to a level to initiate the next stage of charging. In this case,
the charger would stay in absorption until the Absorb Time setting is
reached.
Float Stage
Float charge maintains the batteries slightly above the self discharge
voltage of the batteries. The charge current in float is the current
necessary to maintain the batteries at the Float Voltage setting,
limited only by the inverter's capability or other settings that limit
the inverter's maximum charge rate. Float charging reduces battery
gassing, minimizes watering requirements (for flooded batteries),
and makes sure the batteries are in a constant state of readiness. The
charger automatically switches to the float stage after the batteries
have received a bulk and absorption charge (see Figure 12). The
batteries are maintained at the default float voltage level for the
selected battery type or the voltage selected under Float Voltage on
the Custom Battery Settings menu.
Freedom XC Series INV-CHG Owners Guide.book Page 55 Wednesday, June 7, 2017 3:13 PM