PKR39809-02

SEF Alarm

The SEF Alarm is a facility whereby a SEF will trigger an alarm without tripping the switchgear.

An SEF Alarm Definite Time delay can be configured which is independent of the SEF Trip protection timing. This allows the SEF Trip and Alarm functions to be operational at the same time.

SEF Alarm Configuration

SEF Protection must be available for the SEF Alarm to be used.

The SEF Alarm On/Off control is displayed in WSOS on the Control page as well as on the operator interface.

SEF Alarm Timing

The SEF Alarm Definite Time is a separate setting for each trip within a protection group.

If SEF Alarm is being used with 4 Trips to Lockout, six SEF Alarm Definite Time settings will need to be configured: Trip 1, Trip 2, Trip 3, Trip 4, Single Shot, and Work Tag.

Each setting is configurable between 0.10 s and 999.00 s in steps of 0.01 s.

SEF Alarm settings in WSOS

In WSOS there is an SEF Alarm Definite Time setting on each Trip page below the SEF Protection settings as shown below for Trip 1.

Figure 145
WSOS SEF Alarm Definite Time setting

These settings also appear on the operator interface.

When activated, the SEF Alarm will log an event in the Event Log.

SEF Alarm On/Off events are also recorded.

The SEF Alarm can be mapped to a Status Lamp or lamp on the flexVUE O.I.

The SEF Alarm is also available for mapping through the Configurable Protocol Tool for reporting via SCADA.

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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