2. Setting solar as priority
2.1 When utility is normal
If solar power is strong enough to support the load, utility power will not be
consumed even though it
’s available. If solar power is not enough,
battery will firstly
come up to support the loads, and after battery is low or the setting point in
program 5, utility will then take over to support the loads, if solar is absent, utility
will then take over to support the load too.
2.2 When utility is down
The behavior is the same as 1.2.
Advantages
Disadvantages/Risk
The good utilization of solar
power Save electricity bill by
reducing the consumption
of utility
Battery will experience more frequent charge and
discharge cycles and therefore battery's service life
will be shorter. If both solar power and battery is low,
and utility outage occurs before the battery can fully
charge by utility, the backup function of the product
might be compromised or void.
3. Setting solar as priority (SBU)
3.1 When utility is normal
If solar power is strong enough to support the load, utility power will not be
consumed even though it's available. If solar power is not enough, battery will firstly
come up to support the loads, and after battery is low or the setting point in
program 5, utility will then take over to support the loads and charge the battery
3.2 When utility is down
The behavior is the same as 1.2.
Advantages
Disadvantages/Risk
The good utilization of solar
power Save electricity bill by
reducing the consumption
of utility
Battery will experience more frequent charge and
discharge cycles and therefore battery's service life
will be shorter. If both solar power and battery is low,
and utility outage occurs before the battery can fully
charge by utility, the backup function of the product
might be compromised or void.
Summary
Whether setting utility as priority or setting solar or SbU as priority is subject to
purpose of installing the product. In the event the product is to be installed in areas
where the utility Dower is unstable and backup function is much important than
energy saving, utility shall be set as priority.
If the product is to be installed in areas with stable utility power and strong sunlight,
and energy saving is more concerned than backup function, solar power shall be set
as priority or SbU.
