MRU3-1 Voltage Relay

Product detail

Product code:
MRU3
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Product Information

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Documentation (Brochures & Manuals)

General HighTECH Line User Manual

The voltage supervision relay MRU3-1 protects electrical power generators, consumers or operating components generally against over- or undervoltages.

Among other applications the relay can be used for detection of over- or undervoltages in power generating plants and energy supply systems.

  • to protect generators against critical overvoltages in case of defective voltage regulators

  • as undervoltage protection for motors

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, residual voltage protection.

  • Protection of High, Medium and Low Voltage feeders against overvoltage (insulation damage) and undervoltage.

Inputs and Outputs
Binary inputs 2
Output relays 4
Voltage transformer inputs 3
Watchdog relay 1
Protection ANSI
Voltage protection 27/59
Residual voltage 59N
Additional Features
Disturbance recorder
Fault recorder (none volatile)
Parameter sets 2
Communication
Modbus RTU (Option)
RS485 Open Data Protocol (Option)
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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