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Power quality
Power quality
Power quality overview
Your meter measures voltage and current harmonics, and calculates several
harmonic distortion values, including K-factor and crest factor.
Configure your meter with the power system’s nominal values for voltage, current
and frequency in order for the meter to perform power quality calculations.
Considerations for power quality configuration using ION Setup
Use ION Setup to configure sag/swell, transient and advanced power quality
logging.
NOTE: For waveform recording to trigger automatically, enter your system’s
nominal (normal) voltage and current values and the amount of deviation from
the nominal that is considered a sag or a swell using the
Metering > Basic or
Alarming screen
NOTE: Changing your meter’s data logging (including burst data logging) and
waveform recording configuration clears your meter’s existing data logs,
waveform records and COMTRADE waveform files.
Before setting up the PQ parameters, make sure the meter has been configured
correctly:
• metering parameters such as volts mode and PT/CT ratios
• time sync settings, for integrating the meter in an energy management
system such as WinPM.Net
• nominal system parameters (nominal volts, nominal current and nominal
frequency), for detecting power quality events
• amount of deviation from the nominal that is considered a sag or swell
Make sure you understand:
• the structure of the meter’s logging framework
• the meter’s existing logging configuration
• your data logging requirements
Changing the meter’s data recorder and waveform recorder configuration clears
existing data and waveforms in those recorders.
NOTICE
DATA LOSS
Failure to follow these instructions can result in data loss.
Ensure that all important data and waveforms have been recorded before
configuring the data and waveform recorders.
138 7EN05-0390-00