AQ-T256 Transformer Protection IED

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AQ-T256 is a transformer protection IED with a sophisticated and easy-to-use differential protection function. The relay provides overcurrent protection for both LV and HV side, earth fault protection, negative sequence overcurrent protection as well as two independent instances of restricted earth fault protection. You can add up to ten (10) I/O or communication cards into the device for extensive monitoring and control applications. AQ-T256 communicates using various protocols, including the IEC 61850 substation communication standard. 

Highlights

  • A large I/O capacity
  • A pre-defined or custom connection group selection & 2nd and 5th harmonic blocking
  • Automatic verification of connection group and nominal value settings
  • Overloading and through fault statistics for preventive maintenance