MRN3-3 Mains Decoupling Relay (MRN331D)

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Product number: MRN331D

Configuration

Voltage transformer inputs

The MRN3-3 is a mains decoupling relay with df/dt and programmable undervoltage characteristics.

Its function is to supervise mains voltage and mains frequency. It provides voltage time characteristics.

  • 19“ racks – fully withdrawable

  • Door mounting – withdrawable and sealable

  • Panel mounting – fully withdrawable

  • Fault / disturbance recorder

  • Intuitive HMI

  • Display (of primary values)

  • Easy setting software – Smart view

  • Compact form factor

  • Interconnection of renewable energies (DER – distributed energy resources) to the public grid.

  • Over- / Undervoltage protection.

  • Frequency based protection option, examples:

    Over-/Underfrequency supervision

    Load shedding by ROCOF

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