Fonrich New Energy Technology Co., Ltd.
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2.4 Arc alarm strategy
2.4.1 Arc mode
We divide the arcs into Instantaneous Arc and Continuous Arc.
Instantaneous Arc
The arc duration does not exceed the Instantaneous Arc Time (IAT), and there is
no arc occurring again within the Continuous Arc Time (CAT).
Continuous Arc
The arc duration exceeds the IAT, or the arc duration does not exceed the IAT,
but the arc occurs again within the CAT.
2.4.2 Arc alarm strategy
1. Instantaneous arc alarm
If the arc intensity of any channel exceeds the channel alarm threshold, an arc
alarm will be generated.
2. Continuous arc alarm
The product does not alarm when instantaneous arc is detected, but only when
continuous arc is detected.
2.4.3 Arc alarm time
The calculation method of the arc alarm times of the channel: When an arc alarm
occurs in any channel, the number of arc alarm times increases by 1. When arc faults
occur in several channels at the same time, the number of arc alarm times only
increases by 1. The product will automatically restart after 2 minutes.
However, when the arc alarm times is up to the value of the arc alarm time, the device
must be restarted manually.
2.5 Inside Components
Description
1
Arc Fault Detector : Detect real-time the arc in the PV strings.
2
Main Control : Control the state of the product.
3
DC Terminals : PV strings input and output terminals.
4
AC Terminals : Inverter input and output terminals.
