Generator protection relay
REG650 IEC/ANSI
ABB Oy Distribution Automation
REG650 - your best choice for small and medium-sized generators
Based on ABB's extensive experience, REG650 IEDs (Intelligent Electronic Device) take generator protection to a new performance level that ensures unrivalled selectivity and sensitivity. REG650 provide protection and monitoring for generators, prime movers and step-up transformers in hydro, pump-storage, gas, diesel, combined cycle, steam, nuclear, cogeneration and renewable power stations. With excellent performance, flexibility and scalability they fulfill the demanding requirements of both new and retrofit installations - in every corner of the world.
A generator protection system with REG650 meets the requirements for maximum dependability and availability. The internal/external fault discriminator is based on negative sequence quantities, enabling a fast and selective decision to operate. The unique main protection functions are able to selectively detect and clear all fault types over 100% of the stator winding. The stator earth-fault protection includes the evaluation of the fundamental and 3rd harmonic frequencies. The detection criteria can be used to create intelligent, application-specific functions to enhance your protection system to meet very specific requirements, for instance, when the operating conditions of the plant change.
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