E-MAX SFR Relay

The SFR-2/59 Frequency Relay is a second generation relay designed to provide reliable load shedding during abnormal frequency conditions. The highly reliable device has up to three electromechanical relay outputs which may be used to trip power circuit breakers.

Special inhibit circuits prevent false trips due to loss of signal, loss of voltage, or an internal power failure. The relay will not false trip due to noise.

Models are available in one, two, or three separate frequency trip points and independent output circuits. Relays that trip on one frequency with reset on a higher frequency and relays with automatic reclosing sequences are available as well as overfrequency and over/under frequency models.

New models feature Alarm Status Monitoring. These new units monitor the power supplies and trip circuits delivering visual indication coupled with a relay contact to further increase the SFR’s proven reliability.