Battery type: The most common battery type associated with the specified charging
settings.
There are 3 charging stages:
Bulk Charging: This is the initial stage of charging. While Bulk Charging, the charger
supplies the battery with controlled constant current. The charger will remain in Bulk
charge until the Absorption charge voltage (determined by the Battery Type selection)
is achieved.
Absorb Charging: This is the second charging stage and begins after the
absorb voltage has been reached. Absorb Charging provides the batteries with
a constant voltage and reduces the DC charging current in order to maintain
the absorb voltage setting.
Float Charging: The third charging stage occurs at the end of the Absorb Charging
time. While Float charging, the charge voltage is reduced to the float charge voltage
(determined by the Battery Type selection). In this stage, the batteries are kept fully
charged.
Network Connections
Network connections allow the MPPT controller to communicate with computers. A
network can be as simple as one controller and one PC, or as complex as dozens of
controllers monitored via the Internet.
Power Connections
Wire Size
The six large power terminals are sized for 6AWG wire. The terminals are rated for
copper and aluminum conductors. Good system design generally requires large
conductor wires for the solar and battery connection that limit voltage drop losses to
2% or less.
Minimum Wire Size
Minimum wire sizes for ambient temperatures to 45
°C are provided in table 3-2
below.