ABB REG670 IED Generator protection.REG670 IED (Intelligent Electronic Device) provides protection and monitoring for generators, prime movers, and step-up transformers in hydro, pump-storage, gas, combined cycle, steam, and cogeneration stations. With excellent performance, flexibility, and scalability it fulfills the demanding requirements, in every corner of the world, for both new installations and retrofits.（REF615、REX610、RED670）
Generator protection system based on REG670 meets the conditions of maximum reliability and availability.Generator differential protection is based on a fast fault detection algorithm with a response time of 15 ms while maintaining high system reliability.
REG670 protections also include earth fault protection of 100% stator and rotor windings with control current overlay and earth fault protection of 100%
stator winding with 3rd harmonic control.
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