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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 175-253KTL3-X HV 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.
Unpacking 4
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.
Package contents:
Package contents:
Fig 4.1
PV + terminal, PV- terminal
AC wiring copper terminal
Removal tool of PV terminal
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