MI 2893 / MI 2892 / MI 2885 Measurement methods
202
An active average value is calculated upon the same principle (arithmetic or RMS) as average value, but
taking in account only measurement where measured value is not zero:
Where:
A
RMSact
– quantity average over active part of given aggregation interval,
A – 10/12-cycle quantity value marked as “active”,
M – number of 10/12 cycles measurements with active (non zero) value.
Arithmetic active average:
Where:
A
avgact
– quantity average over active part of given aggregation interval,
A – 10/12-cycle quantity value in “active” part of interval,
M – number of 10/12 cycles measurements with active (non zero) value.
Difference between standard average (Avg) and active average (AvgOn)
Example: Suppose we measure current on AC motor which is switched on for 5 min every 10 minutes.
Motor consumes 100A. User set recording interval to 10 minutes.
To Next Page
Loading...
Need help?
General
