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the battery.
Maximum Power Point Tracking (MPPT) Function
Maximum Power Point Tracking, frequently referred to as MPPT, is an electronic system that operates the
Photovoltaic (PV) modules in a manner that allows the modules to produce all the power they are capable
of.
The PV-seeker Charge controller is a microprocessor-based system designed to implement the MPPT.
And it can increase charge current up to 30% or more compared to traditional charge controllers (see figure
1).
Figure 1 Current, Power vs. Voltage Characteristics
2.5.4 Power Saver
There are 2 different working status for APC
inverter: “Power On” and “Power Off”.
When power switch is in “Unit Off” position, the
inverter is powered off.
When power switch is in either of “Power Saver
Auto” or “Power Saver Off”, the inverter is
powered on.
Power saver function is to dedicated to conserve
battery power when AC power is not or little
required by the loads.
In this mode, the inverter pulses the AC output
looking for an AC load (i.e., electrical appliance).
Whenever an AC load (greater than 25 watts) is
turned on, the inverter recognizes the need for power and automatically starts inverting and output goes to
full voltage. When there is no load (or less than 25 watts) detected, the inverter automatically goes back into
search mode to minimize energy consumption from the battery bank.
In “Power saver on” mode, the inverter will draw power mainly in sensing moments, thus the idle
consumption is significantly reduced.