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MIV Voltage/Frequency M Family Relay

MIV Voltage/Frequency M Family Relay

The MIV, a member of the M Family of protection relays, is a microprocessor based relay that provides voltage, frequency or voltage and frequency protection for a wide range of applications at any voltage level, including over/undervoltage protection and monitoring, undervoltage detection in automatic transfer systems, overvoltage protection of generators, undervoltage, voltage unbalance protection of motors, monitoring of lines and busbars for healthy/existing/lack of voltage and voltage/frequency load shedding and restoration.

Applications
  • Over/undervoltage protection and monitoring
  • Overvoltage protection for generators
  • Undervoltage detection in automatic transfer systems
  • Undervoltage/voltage unbalance protection for motors
  • Monitoring of lines and busbars for healthy/existing/lack of voltage

Protection and Control
  • Three phase undervoltage protection (27) (Hiset and Loset)
  • Three phase overvoltage protection (59) (Hiset and Loset)
  • Ground overvoltage protection (59N) (Hiset and Loset)
  • Voltage unbalance protection (47)
  • Under/overfrequency protection (81U/81O)
  • Configurable I/O

Monitoring and Metering
  • 24 Event record
  • Analog/digital oscillography

User Interface
  • M+ Setup software for setting, monitoring
  • RS232 port, faceplate accessible (19.2 kbps, ModBus® RTU)
  • RS485 rear port (19.2 kbps, ModBus® RTU)
  • LED dot matrix display and keypad