AFR3-01 Arc Protection Device

AFR3-01 Arc Protection Device is designed to protect cabinets KRU, KSO, KRUN of electric stations and substations 0.4 … 35 kV in the event of short circuits in them, accompanied by an open electric arc and issuing a control signal in the automation circuit and relay protection.

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Features of AFR3-01 Arc Protection Device

  • Arc Fault Protection
  • These units provide the ability to disable unused arc sensors
  • The protection will not erroneously operate when the arc sensor is illuminated by fluorescent and natural light sources
  • Functions of the UR
  • Internal self-diagnostics of the arc sensor and microcircuit integrity
  • Prevents false alarms.

 

Specification of AFR3-01 Arc Protection Device

Wide temperature range – 40°С…+55°С
MTBF 320,000 hours
Output relays 6 pcs
The angular size of arc control sector 360 degrees
Number of arc sensors 3 pcs
Maximum sensor length up to 20 m
Minimum fixed arc current 200 A
Nominal threshold illumination of operation up to 5,000 Lx
Warranty 7 years. Extended warranty option up to 15 years
Full readiness time when power is turned on no more than 0.2 s
Sustained power interruptions 1 s