Error Code - 305 - Abnormal Grid Frequency - Alert Severity Major

Thomas Garcia

Modified on: Tue, 4 Dec, 2018 at 6:16 PM

Alarm ID

Alarm Name

Alarm Severity

Possible Cause

Suggestion

305

Abnormal Grid Frequency

Major

Cause ID = 2

The actual power grid frequency is higher than the standard requirement for the local power grid.

Cause ID = 4

The actual power grid frequency is lower than the standard requirement for the local power grid.

Cause ID = 5

The actual change rate of the power grid frequency does not meet the standard requirement for the local power grid.

Cause ID = 2/4
1. If the alarm occurs accidentally, the power grid may be abnormal temporarily. The SUN2000 automatically recovers after detecting that the power grid becomes normal.
2. If the alarm occurs frequently, check whether the power grid frequency is within the acceptable range. If no, contact the local power operator. If yes, log in to the SUN2000 APP, SmartLogger, or NMS to modify the power grid over frequency and underf requency protection thresholds with the consent of the local power operator.
Cause ID = 5
1. If the alarm occurs accidentally, the power grid may be abnormal temporarily. The SUN2000 automatically recovers after detecting that the power grid becomes normal.
2. If the alarm occurs frequently, check whether the power grid frequency is within the acceptable range. If no, contact the local power operator.

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