System pro M compact® - Piti Group

Systempro M compact ®Technical detailsUnwanted tripping - F2C-ARH solutionRCDsThe F2C-ARH is an auto-reclosing device particularly suited for household and similar uses. Unlikethe F2C-ARI auto-reclosing unit, it doesn’t require a separate low voltage power supply, but canbe supplied by the associated RCCBs (2 pole RCCBs up to 63 A – 30 mA ) at the 230 V a.c. ratedvoltage.Another feature that makes the product ideal for home applications is an internal control unit thatchecks there are no insulation faults in the system before allowing the RCCB to reclose.This ensures that reclosing occurs only in case of unwanted tripping of the RCCB (i.e. overvoltagesinduced by electrical storms), thus assuring continuity of power supply also in these situations.Situation of temporary over-voltage, for example caused by a lightning, that causes RCCB’suntimely tripping.?ON!30 mA30 mA30 mAOFF0 3 sec0ON0When the RCCB operates in presence of an effective insulation fault, the auto-reclosing device doesn’tallow its reclosing and guarantees the system insulation.10Situation of permanent earth fault that causes RCCB’s tripping.?OFF!30 mA30 mA30 mAOFF0 3 sec0OFF01 2Selection tables ............................... pag. 3/210/90 ABB