If these dangerous arc faults keep occurring for days,
months even years, they exert thermal stresses the
surrounding material, which cause changes and,
in the worst-case scenario, can lead devastating fires.
Arc faults can caused even minor damage insulation defects
on conducting lines.L
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Electric arcs and arc faults
in serial and parallel-
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Electric arcs can occur for operational reasons when opening or
closing mechanical contacts.
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- Fault code display (repeated three times)
continuously lit green: normal operation
1 yellow: serial fault
2 yellow: dimmer fault
3 yellow: parallel fault
4 yellow: overvoltage (>270 V)
5 yellow: temperature (>115°C)
6 yellow continuous yellow/red: internal error
Types arc fault-
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- serial fault: parallel fault:
More than just fire protection: one device, three functions
. They not present any hazard. they unnoticed, they can become fire
risk the electrical installation. Parallel arc faults are detected by
miniature circuit-breakers and residual current circuit-breakers,
while serial arc faults can unnoticed AFD unit present
