MiCOM Agile P640 Series Transformer Protection Relays - P642, P643, P645

Product Description

MiCOM Agile P640 Series

Transformer Protection Relays - P642,P643, P645

Part of the MiCOM P40 platform, the Agile P64x transformerprotection relays helps preserve transformer service life and provides fastprotection for transformer faults. The platform consists of three modelvariants (P642, P643 and P645) that cover two and three-winding transformers(including auto-transformers), with up to five sets of 3-phase CT inputs, andoffers high and low impedance restricted earth fault, and has integral assetmanagement capability.

Key features:

• 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
• Adaptable to transformers with considerable CT mismatch between terminals – matching factor up to 20
• 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
• No internal batteries in GE-branded models removes a maintenance item and eases air-freight logistics