Generator Protection

Generator Protection

Complete SEL Generator Protection Solution



Generator Protection


Use the optional, built-in automatic synchronizer function in either the SEL-700G Generator Protection Relay or SEL-400G to automatically synchronize the frequency, voltage, and phase angle of the generator and connect to the power system. This eliminates the need for expensive external synchronizing equipment.

Unit Protection

Metering and Reporting

STATOR/Field Ground Protection

Software-Defined Networking

Dual Differential Zone Protection

Advanced Time Synchronization

Resistance Temperature Detector (RTD)-Based Thermal Protection

Questions? Contact Us!

If you have any questions about SEL products, services, solutions, or support, please contact us. Our service and support professionals are ready to provide the answers you need.

Unbeatable Support

SEL support teams are stationed in regional offices around the world and staffed with application engineers who are experts in our products and in power system applications.

Technical support for SEL-manufactured devices is always free. No matter how often you need to call or how long your SEL products have been in service, you’ll reach an SEL expert who can provide the service and support you need.

Our cybersecurity team is always ready with the information and resources needed to keep your OT networks and critical systems secure and working effectively. Cyber services support contracts can include incident response, audits, system hardening, and more, depending on your anticipated needs.

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