EnerSys OutBack Power SkyBox, Руководство пользователя

Страница: 7 / 32

900-00272-01-001 Rev A
7
Cycle That Battery (Self-Consumption)
Self-consumption
is the best profile for those who have high energy rates and low return when selling power,
but are still able to send power back to the utility. When this profile is selected, the SkyBox will harvest as
much solar power as it can. After sending power to your protected loads, all extra power will be sent to the
utility grid.
When the protected loads (freezer, refrigerator, etc.) need more power than the available solar power, the
SkyBox uses the battery to make up the difference. The SkyBox drains the battery as long as solar power is
less than the load demand until the battery reaches the
Minimum SOC
setting. At this point, the SkyBox stops
draining the battery and makes up any power needed by buying from the utility.
Because you’ve told the SkyBox to ‘zero’ its utility use, the only allowed charging source for the battery is
solar power. There are a few exceptions to this rule, but in this section we are only covering the main ideas.
The exceptions are found in
Charging Source
on page 11.
Here’s the ideal scenario for this profile. The battery reaches Minimum SOC sometime during the night and
the loads are powered from the grid for a minimal amount of time. Once the sun rises and the array starts
producing power, the SkyBox begins charging the battery. The battery only charges if the power needed by
the loads is less than the available solar power.
The SkyBox will continue charging the battery until it reaches the Maximum SOC setting. The battery is not
drained again until it reaches the Maximum SOC setting.
Figure 5 Self-consumption Power Flow