Siemens 9410DC, User Manual, Page: 109 / 172

Logging 9410 series
4. Navigate to Power Quality and click the Sag/Swell tab to configure your meter’s
waveform recording parameters.
NOTE: COMTRADE status must be set to Disabled before modifying the
waveform format.
Sag/swell detection parameters
Parameter Values/Range Description
Nominal voltage 0 - 999,999 Specifies the nominal voltage value used for sag/swell
detection.
Voltage Swell % Percentage of
nominal Specifies how much a measured value must exceed the
nominal in order to be considered a swell.
Voltage Sag % Percentage of
nominal Specifies how much a measure value must fall below the
nominal in order to be considered a sag.
Nominal current 0 - 999,999 Specifies the nominal current used by Swell and Sag limit
% for a current sag or a current swell.
Current Sag
Pickup Numeric value Specifies the percentage the current must deviate from the
nominal current in order to be classified as a sag.
Current Sag
Dropoff Numeric value Specifies the additional amount that the current must
recover in order to signal the end of the sag.
Current Swell
Pickup Numeric value Specifies the percentage the current must deviate from the
nominal current in order to be classified as a swell.
Current Swell
Dropout Numeric value Specifies the additional amount that the current must
recover in order to signal the end of the event.
Waveform recording parameters
Parameter Description
Sag/Swell depth Specifies the number of records the sag/swell data log can hold.
Waveform depth Specifies the maximum number of waveform records stored on the meter.
Waveform format Specifies the number of samples per cycle and the number of cycles that are
stored in a waveform record.
Post event cycles Specifies the number of cycles recorded after the waveform is triggered.
NOTE: The maximum number of post event cycles cannot exceed the number of
cycles in the waveform record.
Hysteresis % Specifies the difference in magnitude between the start and end thresholds for a
power quality event.
Setpoint learning overview
Your meter can learn acceptable ranges or thresholds by monitoring normal operating
values to determine what constitutes a voltage sag or swell in order to help identify
high and low setpoints.
NOTE: To help your meter learn the most accurate values possible, it is important that
learning occur during a period of normal operation. Do not schedule learning during a
period of unusual operations in your system. Do not modify your meter’s configuration
during the learning period as it may stop the learning process.
You can configure the meter so that learned values are applied automatically once the
learning period is complete or require that they are reviewed and manually applied. If a
learned value is invalid, the learned values are not automatically applied, but logged
for review.
Setpoint learning can be used to identify the following values:
7EN05-0336-01 109