APPENDIX B
HOW TO DETERMINETHE OUTPUT SOURCE PRIORITY SETTING AND
CHARGER SOURCE PRIORITY SETTING?
Please read this document carefully if you intend to manually set the
priority setting of the product. Improper setting might compromise
the function and performance of the product.
The product is designed to accept both utility and solar (PV) power as input source,
and it also provides a function allowing the user to determine the priority between
utility and solar input power. The priority is to be set via LCD and control buttons on
the front panel (please refer to user manual for more details). This document
explains how the product's behavior will be at each setting and what should be
considered while determine the priority.
A. Output source priority setting
1. Setting Utility as output source Priority (Utl)
1.1 When utility is normal
The loads connected to the product are supplied by utility power only,
even when solar power presents.
1.2 When utility is down
As soon as the utility is down, the inverter enters "Backup Mode" and checks both
solar power and battery's status. If solar power is strong enough, it will supply the
loads, if solar power becomes weak, the loads will then be supplied by battery until
it's too low. The longer the solar power lasts, the less consumption from the battery
and hence the longer backup time.
Advantages
Disadvantages/Risk
Better chance to keep the battery fully
charged so that the backup function
won*t be compromised when the utility
is down. Good for batteries life as
batteries are less chance to work on
discharging mode.
The solar power cannot be fully utilized
by supporting the loads, especially when
battery if fully charged.
