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User Manual V1.6-2022-01-05 02 Installation Instructions
Arc decection
Arcing detection status:
Clear arcing alarm
Self checking
Not self-checking
Set
Set
Arc detection
Arc decection
Arcing detection status:
Clear arcing alarm
Self checking
Not self-checking
Set
Set
Arc detection
Arc decection
Arcing detection status:
Clear arcing alarm
Self checking
Not self-checking
Set
Set
Arc detection
2.6 Arc Detection
AFCI function in A-ES
An electric arc is a gas discharge phenomenon. An instantaneous spark caused by an electric
current passing through some insulating medium (such as air).
The cause of the electric arc
• Connector is not connected well in photovoltaic system or the battery system.
• Incorrect or broken cable connection
• Deterioration of connectors and cables due to aging of photovoltaic systems
Arcs generate heat which can cause res and they also pose an electrocution
risk to those working near them.
Les arcs génèrent de la chaleur qui peut causer des incendies et ils
présentent également un risque d’électrocution pour ceux qui travaillent
près d’eux.
Use of the arc detection function
In North America, according to UL / CSA (UL1699B) safety requirements regarding arcing, it is
necessary to detect and terminate the arc by shutting down the inverter.
The AFCI function is integrated in the A-ES series inverter. Once an arc is detected, the
corresponding error and time will be reported in the App. The rst 4 faults of the inverter within
24 hours can be resolved by automatic recovery or manual recovery. After the 5th arc fault the
inverter must be stopped. Only after the site troubleshooting or the problem components are
replaced, and the fault error is manually cleared, can the machine work normally.
AFCI function needs to be operated in PV Master App:
Turn on Arc detection
function: “Settings >
Advanced Setting > Arc
detection > Arc detection”.
Self checking function:
“Settings > Advanced
Setting > Arc detection > Self
checking”. After the self-test
is completed, the test result
will be displayed in the
"Arcing self-test status".
Clear arcing alarm
function: “Settings >
Advanced Setting > Arc
detection > Clear arcing
alarm”
DANGER!
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