current protection relay / under-excitation / programmable / configurable
SEL-300G Schweitzer Engineering Laboratories



  • Measured/monitored value:

    current, under-excitation

  • Other characteristics:

    programmable, configurable, AC, panel-mount, for generators


In order to make technology available for the first time that complies with IEEE turbine protection standards, SEL has applied its expertise in the production of microprocessor-based relays to create the SEL-300G, a generator relay that includes several unique features designed for unsurpassed protection, monitoring, and control of electrical generators. SEL designed the SEL-300G to meet the needs of a variety of users, including utility and industrial power plants and generator set manufacturers.