MRN3-3 Mains Decoupling Relay

Product detail

Product code:
MRN3
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Product Information

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Documentation (Brochures & Manuals)

General HighTECH Line User Manual

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.

Benefits and Key Features

  • 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


Application

  • 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

Inputs and Outputs
Binary inputs 2
Output relays 4
Voltage transformer inputs 3
Watchdog relay 1
Protection ANSI
Voltage protection 27/59
Frequency protection 810/81U
Frequency gradient 81
Vector surge / mains decoupling 78V
Additional Features
Disturbance recorder
Fault recorder (none volatile)
Parameter sets 2
Mounting Type
Housing is withdrawable
Housing suitable for door mounting
Housing suitable for mounting plate

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