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MK 9143N

  • Monitoring of 50/60 Hz current supply on over- and under frequency
  • Monitoring of local generator sets and voltage supplies
  • Separately adjustable trip points and separate outputs for over- and underfrequency
  • Start up delay 0…30 s selectable
  • Manual or auto reset selectable
  • Universal freguency measuring input for AC 40 … 550 V
  • LED indicators for auxiliary supply, input frequency, over and under frequency alarm
  • Output 2 changeover contacts

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