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Generator Protection

Numerous current, voltage, frequency, distance and out-of-step elements provide comprehensive protection for large and small machines.
Optional current differential protection elements include individual phase overcurrent elements for split-phase differential protection applications.
Internal hour meters monitor and record activity, run time, recording stopped time and full load hours.
Accurate internal metering replicates auxiliary meters.

Distributed Generation and Utility Interconnection Protection - separates the customer's system from the utility supply when the SEL-547 Relay detects utility supply problems.
System Disturbance Detection and System Restoration - over/undervoltage or over/underfrequency elements detect local system problems and trip the transfer switch separating the utility supply from the load.
Reverse Power Flow Detection - the directional power element in the SEL-547 detects reverse power flow to trip the transfer switch and separate the utility supply from the load and generator.
Generator Motoring Detection - The directional power element in the SEL-547 detects potentially harmful reverse power flow and trips the switch/breaker, breaking parallel operation.

130 Seaboard Lane • Suite A7 • Franklin, TN 37067 – USA
PHONE: +1.615.507.2184 • FAX: +1.615.507.2188
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