Issue:
Digital Multimeter reads higher voltage in the output voltage from the Altivar VFD than the actual voltage.
Product Line:
ATV12, ATV312, ATV630, ATV930, S-Flex, E-Flex, Altivar Drives
Environment:
All
Cause:
NA
Resolution:
Normally, a True-RMS Digital multimeter (DMM) will read about 20 to 30% higher output voltage than what the actual Output voltage is. The reason is that a standard True-RMS DMM cannot reliably filter out the PWM(Pulse Width Modulation) output waveform and High Frequency noise from the VFD. A DMM with a Low Pass filter can fix this issue and can measure the output voltage more accurately.
Digital Multimeter reads higher voltage in the output voltage from the Altivar VFD than the actual voltage.
Product Line:
ATV12, ATV312, ATV630, ATV930, S-Flex, E-Flex, Altivar Drives
Environment:
All
Cause:
NA
Resolution:
Normally, a True-RMS Digital multimeter (DMM) will read about 20 to 30% higher output voltage than what the actual Output voltage is. The reason is that a standard True-RMS DMM cannot reliably filter out the PWM(Pulse Width Modulation) output waveform and High Frequency noise from the VFD. A DMM with a Low Pass filter can fix this issue and can measure the output voltage more accurately.
Released for:Schneider Electric New Zealand
