GE MiCOM Agile P64x Family – Transformer Protection Relays


The GE MiCOM Agile platform of transformer protection relays helps preserve transformer service life and provides fast protection for transformer faults. The platform consists of three model variants that cover two and three-winding transformers (including auto-transformers), with up to five sets of 3-phase CT inputs, and offers high and low impedance restricted earth fault, and has integral asset management capability.

Available models:

  • P642 2 Winding transformer management IED
  • P643 3-End transformer management IED
  • P645 5-End transformer management IED

Features include:

  • High stability during external fault with heavy CT saturation due to transient bias technique
  • No slow-down of differential elements due to 2nd harmonic component in fault currents
  • Current transformer supervision operates with or without voltage inputs, fast enough to prevent any spurious tripping and alarm
  • 10 integrated function keys, tri-color LEDs, and graphical programmable logic permit the creation of comprehensive, tailored schemes
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    • GE’s P642, P643 and P645 preserves service life and offers fast protection for transformer faults. A transient bias technique has been included, enhancing relay stability and CT requirements. Hosted on an advanced IED platform, the P64x incorporates differential, REF, thermal, and overfluxing protection, plus backup protection for uncleared external faults.

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