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How is the Accumulated Power Consumption (APH) calculated on the ATV61 and ATV71 drives?

FA175829

24/01/2018

Issue:   
How is the Accumulated Power Consumption (APH) calculated on the ATV61 and ATV71 drives?

Product Line:
Altivar ATV61 and ATV71
 
Environment:
All
 
Cause:
Accumulated Power Consumption (APH)
 
Resolution:
The APH is calculated regarding motor electrical consumption measured by the drive to supply the motor ( motor current, motor voltage) so it includes mechanical losses.
The drive does not measure reactive power making the precision of the APH about 10%.  The losses of the VSD are insignificant regarding this accuracy.

Please note it is not recommended to use the consumption power measurement APH for electrical billing for instance.