The ABB REG670 is an intelligent electronic device (IED) used for protection, control, and monitoring of generators and generator-transformer blocks in power plants. It is a modular and scalable IED that can be configured to meet the specific needs of different applications.

The REG670 offers a wide range of protection functions, including:

• Differential protection
• Overcurrent protection
• Overvoltage protection
• Reverse power protection
• Loss of excitation protection
• Stator earth fault protection
• Rotor earth fault protection
• Thermal overload protection

The REG670 also provides a number of control and monitoring functions, including:

• Voltage regulation
• Reactive power control
• Real power control
• Frequency control
• Generator monitoring

The REG670 is a versatile IED that can be used in a variety of power plant applications. It is a popular choice for hydro, gas, combined cycle, and steam power plants.

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