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Selectivity, also known as circuit breaker discrimination, is the coordination of overcurrent protection devices so that a fault in the installation is cleared by the protection device located immediately upstream of the fault. The purpose of selectivity is to minimize the impact of a failure on the network. Faults in an installation are, for example, overload and short circuit. There are four ways in which selectivity is achieved:

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  • Selectivity, also known as circuit breaker discrimination, is the coordination of overcurrent protection devices so that a fault in the installation is cleared by the protection device located immediately upstream of the fault. The purpose of selectivity is to minimize the impact of a failure on the network. Faults in an installation are, for example, overload and short circuit. There are four ways in which selectivity is achieved: * Current selectivity: different breaking capacities * Time selectivity: time delay before tripping of a breaker * Energy based selectivity: analysis of the current waves * Zone selective interlocking: communication between the breakers, forwarding a time delay instruction (en)
  • La protezione selettiva di un circuito elettrico consiste nella possibilità di sezionare (ovvero porre fuori servizio) l'area affetta da guasto senza disalimentare le altre aree funzionanti dell'impianto. (it)
  • Selectiviteit is de coördinatie van overstroombeveiligingen in een elektrische installatie, zodat een fout in het netwerk wordt geëlimineerd door de eerste stroomopwaartse beveiliging. Het doel van selectiviteit van beveiligingen is om de impact van een fout op het netwerk te beperken. Fouten in een installatie zijn bijvoorbeeld overbelasting en kortsluiting. Er zijn vier manieren waarop selectiviteit wordt gerealiseerd: * Stroom selectiviteit: verschillende onderbrekingscapaciteiten * Tijd selectiviteit: tijdsvertraging alvorens afschakeling * Energie-gebaseerde selectiviteit: analyse van de stroomgolven * Zone selectieve interlocking: communicatie tussen de automaten, waarbij een tijdsvertraging-instructie wordt doorgestuurd (nl)
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  • La protezione selettiva di un circuito elettrico consiste nella possibilità di sezionare (ovvero porre fuori servizio) l'area affetta da guasto senza disalimentare le altre aree funzionanti dell'impianto. (it)
  • Selectivity, also known as circuit breaker discrimination, is the coordination of overcurrent protection devices so that a fault in the installation is cleared by the protection device located immediately upstream of the fault. The purpose of selectivity is to minimize the impact of a failure on the network. Faults in an installation are, for example, overload and short circuit. There are four ways in which selectivity is achieved: (en)
  • Selectiviteit is de coördinatie van overstroombeveiligingen in een elektrische installatie, zodat een fout in het netwerk wordt geëlimineerd door de eerste stroomopwaartse beveiliging. Het doel van selectiviteit van beveiligingen is om de impact van een fout op het netwerk te beperken. Fouten in een installatie zijn bijvoorbeeld overbelasting en kortsluiting. Er zijn vier manieren waarop selectiviteit wordt gerealiseerd: (nl)
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  • Protezione selettiva (it)
  • Selectiviteit (overstroombeveiliging) (nl)
  • Selectivity (circuit breakers) (en)
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