2.2 When utility is down
The behavior is the same as 1.2.
Advantages
Disadvantages
•
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-charged by utility, the backup
function of the product might be compromised or void.
3.
Setting SbU as Priority
3.1 When utility is normal
As long as solar power is strong enough to support the loads, 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.
2.2 When utility is down
The behavior is the same as 1.2.
Advantages
Disadvantages
•
The utilization of solar
power is maximized.
•
Save electricity bill by
reducing the consumption
of utility
•
Battery will experience most 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-charged 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 power 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.
B. Charger source priority setting
1. Setting Utility as charger source priority
Utility first: Utility will charge battery as first priority.
Solar energy will charge battery only when utility power is not available.
2. Setting Solar as charger source priority
Solar energy will charge battery as first priority.
Utility will charge battery only when solar energy is not available.
