EnerSys OutBack Power SkyBox, Руководство пользователя

Страница: 12 / 32

12
900-00272-01-001 Rev A
Charge Cycle Initiation
Condition: Grid connected, battery at minimum state-of-charge (SOC)
If the SkyBox reaches the
Minimum SOC
setting while connected to the grid, the SkyBox initiates a recovery
cycle. A recovery cycle stops the battery from discharging and begins to draw power from the grid for all
loads. The cycle continues as normal (bulk, absorb, float), drawing power from the allowed source, until the
Maximum SOC is reached. At this point, if the system is programmed to use the battery to support loads,
it will begin discharging the battery. A user cannot manually stop a recovery cycle. See
Energy Arbitrage
on
page 23 for more details on charging when using time-of-use.
Condition: Battery voltage goes below the re-float or re-bulk setting
Similar to the legacy products, battery voltage decreasing below re-float or re-bulk will not prevent the battery
from discharging to support the loads. When the re-bulk or re-float set point is reached,
Charge status
will
change from
Charger Off
to either
Bulk
or
Float
. Once the battery is no longer required to support the loads,
solar and grid power (if applicable) are used to charge the battery. A user can manually stop this cycle.
Condition: Battery state-of-charge reaches Minimum SOC, off-grid
If solar power is available, the SkyBox initiates a bulk stage and begins charging the battery from solar power
and/or the grid. The SkyBox will not discharge the battery again to support the loads until it has reached 85%
of
Maximum SOC .
Battery Charging Precautions
o
A system fault causing the system to stop producing power will force the SkyBox to take its idle power (~200 W) from
the battery.
o
During a low battery cutout event, the Grid Charge Limit provides a protective feature allowing the battery to charge
from any available source. Setting this limit to zero eliminates this battery protection. If an LBCO event occurs while
the
Grid Charge Limit
is set to zero and no solar power is available, the battery will not charge, and will remain at ow
voltage.
o
Master inverter battery settings do not auto-populate to any other inverters. They must be set independently. See the
SkyBox Stacking Application Note ( link 6 ) for more information.
o
Batteries will only charge from solar power when the available solar power exceeds load demand.
6