DTE-g based alarms and Events
Each of the following subsections describe a type of event, and its corresponding alarm, that is processed by the system. For each event it is presented the following information:
- a description of the event, including a brief explanation of the data processing used,
- the set of parameters used in the event’s data processing,
- the severity level of the alarms created for that type of event,
- an example of the alarm’s message.
Protective Earth Level
Description | The event is triggered whenever the value of the protective earth resistance (for any of the three frequencies) violates the defined thresholds. The configurable thresholds apply equally to the three frequencies measurements. |
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Parameters | $$WarningLevel$$ Unit: Ohm |
$$CriticalLevel$$ Unit: Ohm | |
Alarm Message | “The protective earth resistances $$R\_f1368 = 25 Ohm, R\_f1611 = 38 Ohm, R\_f1758 = 55 Ohm$$ violate the defined limits.”
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Alarm Severity | WARNING, CRITICAL (depending on which threshold was violated) |
Earthing Voltage Level
Description | The event is triggered whenever the value of the Earthing Voltage Differential violates the defined thresholds. |
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Parameters | $$WarningLevel$$ Unit: Volts |
$$CriticalLevel$$ Unit: Volts | |
Alarm Message | “The feeder line current $$I_{5N} = 86A$$ violates the defined limits.”
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Alarm Severity | WARNING, CRITICAL (depending on which threshold was violated) |