编号：
GR-UM-C -00
13
/
56
Fig 3.5 Fig 3.6
3.7 AFCI Detection Function
AFCI (Arc Fault Circuit Interrupter) is a kind of circuit protection device, the main
function is to prevent the fire caused by fault arc. The electrical insulation aging,
breakage, loose connection, air breakdown caused by air humidity and so on, all of
these may cause an electric spark, which is called arc.
The AFCI function of the MAX series inverter is optional, and the detection equipment
is assembled inside the inverter. When an arc-drawing condition is detected on the
PV input side, the arc current could be detected by the CT assembled on the PV
input-side wire. Then the inverter will shut down. Meanwhile, the inverter will display
the corresponding fault message and the buzzer will sound, which could help to
avoid harm and economic loss to the user.
NOTE: AFCI function is optional.
3.8 Anti-PID Function
The full name of PID is Potential Induced Degradation. Since the PID effect, a large
amount of charge could accumulate on the surface of the photovoltaic module,
which makes the surface passivation of the module worse. Eventually, the fill factor,
open circuit voltage, and short-circuit current of the module are reduced, and the
power of the photovoltaic module is attenuated.
The Anti-PID function uses the principle of reversible PID changes. MAX series
inverters rectify AC voltage at night and boost it to generate a DC voltage. The DC
voltage is connected to PV + and the ground respectively. When add a positive bias
voltage to the module to make the PID effect reverse, the Anti-PID function could
repair the photovoltaic modules at night and prolong the service life of photovoltaic
modules.
NOTE: Anti-PID function is optional.
4
Unpacking
Checking before installation
1>Before unpacking the inverter, check the outer packing materials for damage.
2>After unpacking the inverter, check that the contents are intact and complete. If
any damage is found or any component is missing, contact your supplier.
