MRF3 Frequency Relay

Product detail

Product code:
MRF3
Price
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Product Information

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Documentation (Brochures & Manuals)

General HighTECH Line User Manual

The MRF3 is a universal frequency relay:

  • Four elements for over- or under frequency protection

  • Two elements for frequency gradient supervision df/dt

  • Fast decoupling of the generator from the grid at mains failure

  • Suitable for load shedding systems

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.

  • Frequency based protection option, examples:

    Over-/Underfrequency supervision

    Load shedding by ROCOF

Inputs and Outputs
Binary inputs 2
Output relays 4
Voltage transformer inputs 1
Watchdog relay 1
Protection ANSI
Frequency protection 810/81U
Frequency gradient 81
Additional Features
Disturbance recorder
Fault recorder (none volatile)
Parameter sets 2
Mounting Type
Housing is withdrawable
Housing suitable for 19” rack mounting (Option)
Housing suitable for door mounting (Option)
Housing suitable for mounting plate

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