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Neutral current
Neutral current will typically occur as a result of asymmetrical loads.
The meter calculates a neutral current value once every second using a standard homopolar current technique
(rms value of the vector sum of the phase currents). When this calculated value exceeds a pre-programmed
threshold an alarm can be triggered.
The neutral current threshold value is programmed using the meter support tool and must represent an actual
and realistic value. If left at 0.00A (default) the meter will constantly trigger unnecessary alarms.
Current reversal
The meter detects current reversal events and records the following parameters:
• number of current reversals for phases 1, 2 and 3 (incremental)
• the last 10 current reversals (with time stamp, reversal direction and phase number)
Each current reversal triggers a non-fatal alarm.
Number of days without internal consumption
The meter records the number of days where none of the energy registers have incremented due to a lack of
metrological activity. If the recorded number of days goes over the predefined threshold, then a non-fatal alarm is
triggered.
Cover opening
The meter detects cover opening events and records the following parameters:
• number of cover openings (incremental)
• the last 10 cover openings (with time stamp and duration)
The meter detects and records the first cover opening event during a power failure.
Terminal Cover opening
The meter detects terminal cover opening events and records the following parameters:
• number of terminal cover openings (incremental)
• the last 10 cover openings (with time stamp and duration)
Magnetic sensor
The meter detects magnetic attacks and records the following parameters:
• number of magnetic attacks (incremental)
• total duration of magnetic attacks (not including programmable threshold duration)
• the last 10 magnetic sensor events with time stamp and duration
Calibrations history
The meter records the following calibration event parameters:
• number of calibrations (incremental)
• last calibration date and time
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