Generator Protection
Apply SEL generator protection products and avoid expensive equipment damage and failure while maintaining system performance and increasing availability. SEL quality-tested features provide complete primary and backup protection from all types of faults. Upgrade to an SEL world-class protection system today, and be confident that your generation system will be working tomorrow.
Advantages of SEL Generator Protection
- SEL products lead the industry with the highest mean time between failures (MTBF) (over 300 years).
- Ten-year, no-hassle warranty.
- Large range of use with low base prices and optional generator protection features for custom systems.
- Easy application and quick retrofitting abilities.
Video
Automatic Synchronization
View generator autosynchronizer, Sequential Events Recorder (SER), and 180-cycle oscillographic event reports to analyze generator startup, shutdown, or system faults. Measure electrical, thermal, and generator run-time quantities. Record accumulated breaker contact wear with the breaker monitor function, which uses manufacturer specifications for defining breaker operation limits. The internal monitor tracks the total number of close/open operations and integrates interrupted current per phase.
System Components
![item.image[0].img.alt](http://prodcdn.selinc.com/uploadedImages/Web_Resources/Shared_Callouts/700G.png?n=63672882491000&preset=size-col-4&bp=lg)
SEL-700G Generator Protection Relay
The SEL-700G is the right solution for utility and industrial generator protection, with an autosynchronizer, flexible I/O, and advanced communications. Apply the SEL-700G for comprehensive primary and backup generator protection.
![item.image[0].img.alt](http://prodcdn.selinc.com/uploadedImages/Web_Resources/Shared_Callouts/300G.png?n=63581137857000&preset=size-col-4&bp=lg)
SEL-300G Generator Relay
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. SEL designed the SEL-300G to meet the needs of a variety of users, including utility and industrial power plants and generator set manufacturers.
![item.image[0].img.alt](http://prodcdn.selinc.com/uploadedImages/Web_Resources/Shared_Callouts/2664.png?n=63581138093000&preset=size-col-4&bp=lg)
SEL-2664 Field Ground Module
Add the SEL-2664 to the SEL-300G or SEL-700G to protect all the critical components in your generator with one comprehensive relay. Or, add the SEL-2664 to the SEL-2664S to complete ground fault protection on both the rotor and stator.
![item.image[0].img.alt](http://prodcdn.selinc.com/uploadedImages/Web_Resources/Shared_Callouts/2664S.png?n=63581138106000&preset=size-col-4&bp=lg)
SEL-2664S Stator Ground Protection Relay
Protect high-impedance grounded generators from ground faults at standstill, during startup, and while running by using the multisine frequency injection and neutral overvoltage-based protection in the SEL-2664S.
![item.image[0].img.alt](http://prodcdn.selinc.com/uploadedImages/Web_Resources/Shared_Callouts/547.png?n=63581137869000&preset=size-col-4&bp=lg)
SEL-547 Distributed Generator Interconnection Relay
Apply the flexible SEL-547 at the transfer switch site (interconnection point between the utility and the customer) and at each individual generator site. When the SEL-547 at the transfer switch site detects utility supply problems, it separates the customer system from the utility supply. When the SEL-547 at an individual generator site detects a system problem that could adversely affect the generator, it separates the individual generator from the rest of the system. The SEL-547 product flyer figures show examples of the SEL-547 “in action” at the transfer switch site and at an individual generator site. Other applications and scenarios are possible.
![item.image[0].img.alt](http://prodcdn.selinc.com/uploadedImages/Web_Resources/Shared_Callouts/2600.png?n=63581138074000&preset=size-col-4&bp=lg)
SEL-2600 RTD Module
Measure and transmit data from up to 12 RTDs and a single contact status located in transformers, breakers, motors, generators, or other system apparatus.