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MIN Digital Ground Protection
MIN Digital Ground Protection

The MIN, a member of the M Family of protection relays, is a digital
relay that provides ground directional protection for feeders of any voltage level and backup/auxiliary ground directional protection for transformers, generators and motors. The MIN offers advanced
protection that includes the features listed below.

Applications
  • Directional ground protection relay
  • Backup/auxiliary protection for line schemes
  • Component relay for generator, motor, and transformer packages Protection and Control
  • Two ground IOC (high and low) units for grounded systems
  • Two ground TOC (high and low) units for grounded systems
  • Two directional units (6"N) for grounded systems
  • Two directional units for undergrounded or Petersen coil systems
  • Configurable breaker failure to open
  • Directional comparison: scheme logic (MIN L models)
  • 4 preconfigured overcurrent curves (ANSI or IEC)
  • Configurable breaker failure protection (50BF)
  • Configurable I/O

Monitoring and Metering
  • 32 Event record
  • Analog/digital oscillography
  • KI2 counter for breaker maintenance
  • Ground current metering User Interfaces
  • 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