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Distributed Generator Interconnection Relay

SEL recommends selecting the SEL-751 Feeder Protection Relay or the SEL-849 Motor Management Relay in place of the SEL-547.

The SEL-751 provides complete feeder protection—including over-/undervoltage, over-/underfrequency, and rate-of-change of frequency—to detect power system problems and separate the local supply from the utility. It is available with a color touchscreen display for simplified operation and supervision.

The SEL-849 protects low- or medium-voltage three-phase induction and variable-frequency drive-fed motors. It detects power system problems and separates the load from the utility using over-/undervoltage and over-/underfrequency elements.

SEL will continue to support and warranty the SEL-547.

No Longer in Production

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Minimum Software Version

Latest Firmware Versions

There are no firmware versions available for this product.

Product Revision Firmware ID Date Available Serial Number
SEL-547 R101 SEL-547-R101-V0-Z001001-D20080922 10/6/08 2008280001

The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.

Minimum Software Version

Product Certifications