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Image of M-3311A M-3311A Transformer Protection (2, 3, or 4-Winding) Relay

M-3311A Transformer Protection (2, 3, or 4-Winding) Relay

Brand: Beckwith Electric

Catalog ID: M-3311A

Protect Transformers and Other Important Power System Apparatus.

  • For Transformers of All Sizes
  • 2, 3 or 4 winding Transformers for Transmission and Distribution applications
  • Generator-Transformer Unit Overall Differential
  • Unit Protection of Other Electrical Apparatus and certain Bus Arrangements (including those with a transformer in the zone)
  • Additional Applications:
  • System Backup Protection
  • Load Shedding (voltage and frequency)
  • Bus Protection
  • Individual Breaker Failure Protection for each winding input
  • Available voltage configurations include zero, two or four voltage inputs
  • Ground Differential configurations include one, two or three current inputs
  • Optional Ethernet Connection and Expanded I/O
  • Optional Voltage Package includes:
  • 24 Volts/Hz Overexcitation
  • 27 Phase Undervoltage
  • 59G Ground Overvoltage
  • 81O/U Over/Under Frequency