SEL-700G

The SEL-700G is a versatile generator protection relay providing differential, overcurrent, loss-of-field, reverse power, and thermal protection for synchronous generators. It supports direct connect or PT/CT input configurations and offers fast response algorithms optimized for generator dynamics. The relay includes voltage regulator interface logic, breaker control, and automation features. With its compact footprint and flexible I/O, the SEL-700G is ideal for small-to-medium generators in industrial plants, cogeneration facilities, and distributed energy systems. Built-in event analysis tools and cyber-secure communications make it suitable for modern power plant architectures.

Key Features

• Generator differential protection (optional)

• Loss-of-field, reverse power, volts/Hz

• Breaker and AVR control logic

• Thermal modeling for generators

• SCADA with IEC 61850/DNP3

• Advanced event reporting

Applications

• Industrial and cogeneration generators

• Diesel and gas generators

• Small hydro or renewable generation

• Backup protection for power plants

Keywords

SEL-700G, generator relay, industrial generator protection, SEL protection