AFR3-02 Arc Flash Protection Relay

The AFR3-02 series Arc Flash Protection Relay is designed to protect switchgear cabinets of power stations and substations 0.4 … 35 kV in the event of short circuits in them, accompanied by an open electric arc, and issue a control signal in the automation circuit and relay protection.

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Features of AFR3-02 Arc Flash Protection Relay

  • Sensitivity control for all arc sensors
  • Internal self-diagnostics of arc sensor and chip integrity
  • Setting and reading device data via USB port, even without RAM power
  • Current and voltage monitoring
  • Breaker function
  • Special test mode
  • Event log entry
  • Oscilloscope (records illumination waveform for each sensor)
  • 2 types of device logic
  • False alarm protection

 

Specification of AFR3-02 Arc Flash Protection Relay

Wide temperature range – 40°С…+55°С
MTBF 320,000 hours
Output relays 6 pcs
The angular size of the arc control sector 360 degrees
Number of arc sensors 4 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