HOW TO TEST IF A VFD ( Variable Frequency Drive ) IS BAD WITH A MULTIMETER

WARHAMMER ELECTRIC
WARHAMMER ELECTRIC
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Published 2023-02-24
In this video you will learn how to test VFD with a Multimeter.
learning how variable frequency drives operate and how to troubleshoot if they are bad or not.
I will give a quick lesson on what a VFD ( Variable Frequency Drive ) does and the basics on how they operate normally. Because it is better to understand what and how it works before working on them

Then we will move on to the troubleshooting portion of the lesson with a little bit on how this VFD Failed which was Water Damage most of the time when a VFD fails the primary cause is external meaning someone splashed it , the area is humid and the heat from the motor is causing steam so on and so forth

Small quick shoutout to the best in the business in my opinion @fluke multimeters

Thank you for watching
John spier aka Warhammer Electric

#fluke #meters #vfd #variablefrequencydrive #electrical #hvac #electrician
All Comments (17)
  • @danielfagan7406
    that would be "transistor" not transmitter for IGBT, and thanks for the video
  • @jorgelomeli529
    Nice 👍 definitely needed to see this video thanks man
  • @general_zero_hour
    Why you choose negative frim drive to make check with l1 l2 l3 and u v w ?
  • @danieloconnor2921
    I dont understant why your not using the diode feature of that meter to do the troubleshooting.
  • @tupachillin
    I thought when the neg probe is on DC- it should be infinity? Shouldnt you see numbers/measurements at first until it hits O/L?
  • @josett7759
    Do you use positive to negative dc and positive dc to negative terminal
  • @wecx2375
    Its not really AC but Pulsed DC that goes into the motor.
  • @djnugz2511
    Im still confused on why you're testing between AC and DC. I understand the drive is converting the AC to DC, and then back to AC. But its done all internally. Aren't those DC terminals used for 24v for the drive? I guess i just don't understand the relationship between the AC and DC terminals.
  • @dwenraja1453
    The video is not bad but I literally don't understand everything..