Surge Protective Device (Spd); Afci - Arc Fault Circuit Interrupter (Arcguard) - Fronius Tauro 50-3 Operating Instructions Manual

Surge protective
device (SPD)
IMPORTANT!
After setting the function described above, the inverter will also respond if the 2-
pole signal cable of the surge protective device is interrupted or damaged.
AFCI – Arc Fault Available ex works.
Circuit Inter-
rupter (Arc- AFCI (Arc Fault Circuit Interrupter) protects against arcing faults and in the nar-
Guard) rower sense is a protection device against contact faults. The AFCI evaluates any
faults that occur in the current and voltage curve with an electronic circuit and
switches off the circuit when a contact fault is detected. This prevents overheat-
ing on poor contacts and possible fires.
IMPORTANT!
Active solar module electronics can interfere with the function of the ArcGuard.
Fronius does not guarantee the correct functioning when using Fronius ArcGuard
in combination with active solar module electronics.
Danger due to incorrect or unprofessional DC installation.
This can result in risk of damage and, in turn, risk of fire to the PV system due to
inadmissible thermal loads that arise with an arc.
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IMPORTANT!
Fronius will not accept any costs associated with production downtimes, installer
costs, etc., that may arise as the result of a detected arc and its consequences.
Fronius accepts no liability for damage that can occur despite the presence of
the integrated Arc Fault Circuit Interrupter/extinguishing system ( e.g. caused by
a parallel arc).
Automatic reconnection
To restart the AFCI, no manual procedure is required if a minimum interruption
time of 5 minutes is ensured before continuing operation.
When interrupting for the fifth time within a 24 h period, the AFCI is only al-
lowed to be reset manually before the AFCI does reconnect. Afterwards, the
AFCI may return to automatic reconnection mode.
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The surge protective device (SPD) protects against temporary over-
voltages and dissipates surge currents (e.g. lightning strike). Building
on an overall lightning protection concept, the SPD helps to protect
your PV system components.
If the surge protective device is triggered, the colour of the indicator
changes from green to red (mechanical display).
A tripped SPD must be replaced immediately by an authorised spe-
cialist company with a functioning SPD in order to maintain the full
protective function of the unit.
There is the option of a digital indication when an SPD has tripped.
For setting this function, see PDF "Temporary SPD Triggering" in the
Service & Support area at www.fronius.com
CAUTION!
Check that plug connections are in good condition.
Repair incorrect insulation as appropriate.
Complete connections as per the specifications.