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Descrizione

The current asymmetry relay IP 9278 or SP 9278CT monitors the current symmetry of the 3 phases in three-phase networks. With the integrated current transformers, currents of up to 100 A can be measured. In the event of asymmetry, the changeover relay is switched after the adjustable delay time tv has elapsed. Optionally, the error can be stored.

Dati tecnici
Campo di misura: AC 1 - 15 A
Contatti di uscita: 2 C/O contacts
Forma costruttiva dell'involucro: Distribution board
Larghezza: 70 mm
Monofase / trifase: 3
Ritardo di intervento: Yes
Tensione ausiliaria: AC, AC/DC
Tipo di apparecchio: IP 9278
Vantaggi / Benefici per il cliente
  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Auxiliary supply and measuring input galvanic separated
  • With integrated current transformer
  • As option with external remote reset
Caratteristiche
  • According to IEC/EN 60255-1
  • IP 9278, SP 9278: 3-phase
  • Measuring range
    IP 9278, SP 9278: Up to 15 A
    SP 9278CT: Up to 100 A
  • 2 changeover contacts
  • Adjustable asymmetry
  • Settable time delay
  • Energized on trip /x0x (output relay activated in case of error)
  • De-energized on trip /x1x (output relay not activated in case of error)
  • LED indicators
  • With auxiliary voltage
  • Width 70 mm