The three error limits are based on the accuracy class of the component. For example, if the
meter has an accuracy class of 0.2% and an error limit set to “2.0x Specification Accuracy,” the
PowerMaster
®
will only display an error if the registration is outside of 99.60% and 100.40%.
Accuracy class = 0.2%
Error Limit = 2.0x Specification Accuracy
0.2 * 2 = ±0.4%
Optionally, the user selects “User Defined Accuracy” to set a custom error limit
Save Additional Data After Meter Tests
The user has the option to save additional information:
Meter Trend Data
: This option saves the trending graphs to the database.
Waveforms:
This option allows the user to auto save during a Meter Test and manually save the
waveform diagrams.
Significant Harmonics
: This option allows the user to auto save during a Meter Test and manually
save the harmonic information.
Demand Test Options
This allows the user to choose the timed intervals for a demand test. Choices available are 5
minute or 3 minute intervals. The user also has the ability to change the display from energy
(Whr) or demand (W) accumulation. The user can also select how the results will be displayed:
Demand Sum (Whr/hr, sum of all intervals), Demand Average (Whr/hr, average of all intervals), or
Energy (Whr, average of all intervals).
Harmonic Limits
This option is displayed when “Significant Harmonics” is selected. This narrows down the
number of harmonics the user feels significant and wishes to save to the database.
Max to view
: This allows the user to select how many harmonics are displayed on the screen
Min Threshold
: This option sets the minimum harmonic distortion percentage to be saved. For
example, if the user sets the minimum to 1%, all harmonics that are 0.9% and below will not be
saved. This prevents the user from saving too much unnecessary data to the database.
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