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Generator protection

ABB offers a complete portfolio of generator protection solutions for all types and sizes of generators and generator-transformers units. As members of the Relion protection and control product family, the generator protection IEDs REG670 and REG650 are designed to implement all the core values of the IEC 61850 standard. The protection IEDs also support other types of interfaces to the plant control system.

A generator protection system with REG670/650 meets the  requirements for maximum dependability and availability. The  differential protection internal/external fault discriminator is  based on negative sequence current values, enabling 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 detection criteria can  be used to create intelligent, application‑specific functions  to enhance your protection system, enabling it to meet very  specific requirements, for instance, when the operating  conditions of the plant change.
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