7-21
CH 7/ View Event Data
RMS settings
PX5 provides setup options to measure rms data per cycle or per second.
The RMS Voltage and RMS Current parameters are available under Journal Categories
- Standard List.
Cyclic RMS: RMS values are computed over 1 power frequency cycle (16.67 msec @
60 Hz) in 1/2 cycle steps (every 8.33 msec). The min/max/avg of these cyclic values
are continually updated and saved every user-programmed journal interval (see Chapter
6 Advanced Setup Options - Journal Interval for Timed Readings on page 6-21).
1-Sec RMS: Similar to cyclic rms, except that each rms value is computed over 1
second’s worth of data points (which is 1/60th of a second @ 60 Hz), rather than over 1
cycle.
NOTE: Data for Cyclic or 1-Sec sampling rates apply only to rms parameters.
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