DP-21 (DTL)

Earth Fault Relay

  • True RMS Measurement with SPARC and DCOI Algorithm
  • Fundamental Signal Detection
  • Real Time Display of Earth Fault in (%)
  • Fault / lo-set & hi-set Trip LED Indication
  • Fault Start Event Recording & LED Indication + Output
  • Pre-Alarm LED Indication + Output
  • Trip Event Memory
    (non-volatile 7 previous records)
  • Fault Start Event Memory
    (non-volatile 4 previous records)
  • Selectable Frequency (50/60 Hz)
  • Programmable Relay Output Contact for K2
  • Last Trip Elapsed Time (up to 99days)
  • Software Lock to Prevent Unauthorized Setting
  • Complies with: IEC-60255-26/27; BS EN 50121-5 Standards
  • ANSI Code: 50N, 51N
  • External Plug-in Module for: A-01s / A-01sp
    (RS-485 MODBUS RTU) isolated type
Front Panel

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