Rockwell Automation Allen-Bradley PowerMonitor 5000 Unit - Page 491

Rockwell Automation Publication 1426-UM001J-EN-P - August 2019 491
EN 61000-4-30 Metering and Aggregation Appendix I
Figure 53 - Illustration of a Harmonic Subgroup, an Interharmonic Centered Subgroup and 5 Hz
Increments of Interharmonics (FFT output)
(1)
Mains Signaling Voltage on the Supply Voltage
Mains signaling voltage, also called ripple control signal, is composed of bursts of
signals at a particular frequency that energy providers can use to control meters,
load controllers, and other devices. The PowerMonitor 5000 M8 model measures
mains signaling voltage by using the configuration that is made by the user.
Results are aggregated over 3 seconds, and reported in the
PowerQuality.EN61000_4_30_Aggregation Data Table
. Over-threshold values
are tracked in the PowerQuality.EN50160_Compliance_Results Data Table
and
reported in the Alarm and Power Quality logs. Measurement uncertainty must
not exceed ±5% of the measured value or ±0.15% of the nominal system voltage,
whichever is greater.
Setup
In addition to basic metering setup, these configuration parameters are found in
the Configuration.PowerQuality tab:
• Mains_Signaling_Frequency_Hz - The monitoring frequency of the
control signal in Hz. Range: 5…3000, default 500
• Mains_Signaling_Recording_Length - The maximum recording length in
seconds. Range: 1…120 (default)
• Mains_Signaling_Threshold_% - The threshold in percent of signal level
to the mains voltage. Range 0 (default)…15, 0 disables
(1) Adapted from IEC 61000-4-7-2002, Copyright by IEC, used with permission