Rơle chạm đất &ELR rò rỉ đất Earth Leakage ELR & Ground Fault Relay Model RD7 - RD9 ELR, Orion Italia

Rơle chạm đất &ELR rò rỉ đất Earth Leakage ELR & Ground Fault Relay Model RD7 - RD9 ELR, Orion Italia

Rơle chạm đất &ELR rò rỉ đất Earth Leakage ELR & Ground Fault Relay Model RD7 - RD9 ELR, Orion Italia

The Earth Leakage Relay RD is a microprocessor-based electronic protection device designed to detect low-level current leakage.

The RD series allows preventative control of the system's insulation with continuous displaying of the earth leakage current obtained by the use of a ring-type current transformer. Modbus communication is available.
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Protection

  • (64) Time and current selective ground current protection

Functionality

 

  • Digital display of earth-leakage current in Ampere or in percentage of Trip level.
  • Independent Current adjustments for alarm and tripping from 30 mA to 10 A.
  • Independent Time adjustments for alarm and tripping, from 0.03 to 5 Sec.
  • 2 Output relays: TRIP and ALARM, “latch” or “pulse” mode.
  • Service function (Alarm relay).
  • Indication and storage of the maximum fault current in a non-volatile memory.
  • Manual or automatic reset. The automatic reset is lockout after 3 automatic operations in a period of time less than 9 minutes.
  • Check of output relays and leds.
  • Continuous control of CT wiring connection.
  • High immunity to external disturbances and harmonic current components.
  • Its function is also guaranteed with alternate sinusoidal and continually pulsing currents.
  • Menu on the frontal panel.
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