User manual

34
ation and cannot be switched on if a fault is recognized.
Assoonasafaultoccurs(e.g.groundwirebreakage),the
PRCD-Sswitchesoautomatically.
This increases the level of protection against dangerous
shock currents.
ThePRCD-Swillnotswitchoifexternalvoltageisapplied
to the ground wire, e.g. due to drilling into an external
wire.
Due to the fact that the PRCD-S does not switch o, the
upstream protective device can activate and interrupt the
circuit.
The device is designed to recognize
• alternatefaultcurrents
• pulsatingdirectfaultcurrents
• phase-controlledfaultcurrents
The PRCD-S has the following functions
• residualcurrentdevice(DI)
• groundwireidentication(testingbeforeoperation)
• groundwiremonitoring(testingduringoperation)
• undervoltagerelease
• detection of mains voltage on the ground wire while
switching on*
• maintainingthegroundwirefunctionincaseofexternal
voltage on the ground wire during operation
Fault detection – the PRCD-S detects and protects in case
ofthefollowingsystemerrors
• N-wireinterrupted
• detection of mains voltage on the ground wire while
switching on*
• missingPE-wire
• maintainingthegroundwirefunctionincaseofexternal
voltage on the ground wire during operation
• PhaseLandPE-wirereversed
• PhaseLandPEN-wirereversed
• PE-wirelive
• PEN-wirelive
• ratedresidualcurrents10mAor30mA
 (dependingupondesign)
• poweroutage/powerinterruption
* FollowtheinstructionsunderSwitchingONprocedure.
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