15EATON CORPORATION BR003010ENDoes an AFDD have to be installed in general in IT systems?The installation standard does not distinguish between TN, TT and IT networks with respect to the risk of fire. Even in IT networks, serial arc faults can occur.Despite all this information, I am not sure whether to have an AFDD installed in my electrical system or not. What can I do now?According to IEC60364-4-42 AFDDs are recommended in final circuits. However, the national committees can implement stricter provisions which may result in having AFDDs required in certain final circuits. When in doubt seek appropriate expert advice.?Complete protection against all faults occurring in single-phase final circuits in just one single device.It is not sensitive to:• Arcs formed due to opening or closing of contacts • Brush sparking in motors of vacuum cleaners, drilling machines and other handheld power tools• Welding machines, plasma cuttersNor is the AFDD+ influenced by high frequency noise such as:• PowerLAN• PowerNETAFDD+, the comprehensive protection for all electrical faults.
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