How To Measure Variable Frequency Drives (VFD)

How To Measure Variable Frequency Drives (VFD) - Filtered vs. Unfiltered

Рет қаралды 30,009

Күн бұрын

Learn more about EAB: www.eabcoinc.com
In this video, we discuss how to measure variable frequency drives (VFD) and how signal filtering is needed to accurately measure the voltage leaving the VFD. We demonstrate the difference between filtered vs. unfiltered measurements for both voltage and amperage. If you have any questions for us, please leave them in the comment section below!
Engineered Air Balance is the leading authority in total system balancing, building commissioning, and critical environment certifications at the forefront of industry standards and training.
At EAB, our team of experts are uniquely equipped to train the next generation of technicians, engineers, and building operators. Our state-of-the-art training center in Houston, Texas is committed to developing technical knowledge, expertise, and problem-solving skills to move the entire industry forward.
A few other videos that you may like...
How to Perform A Pitot Tube Traverse Round Duct - • How to Perform A Pitot...
How To Perform A Pitot Tube Traverse Rectangular Duct - • Video

Пікірлер: 9

@EngineeredAirBalance 2 жыл бұрын

Learn more about EAB: www.eabcoinc.com

@jima4286 9 ай бұрын

Good explanation, especially showing the pulsed waveforms on the oscilloscope. If you zoomed into one waveform on the scope, you could show why it is variable frequency.

@mindaugasv85 5 ай бұрын

I think the motor is not connected here, this is why you can see pwm. The motor is inductive load, so if it will connected, you should see a sinnwave, not the pulses.

@l.crossjr Жыл бұрын

Does the VFD varies the frequency or the voltage? Or both?

@tahlularose9267 Жыл бұрын

Both, an a/c motor is designed to operate at a give Freq/Voltage and if you vary one, you have to vary the other or you get an effect called hysteresis and the motor will saturate and overheat even with no load attached.

@tahlularose9267 Жыл бұрын

@@n8skow You can't vary the Freq. alone of the motor more than about 5% or it will burn up.

@na_co1165 11 ай бұрын

@@tahlularose9267 Great answer! Do you have any source/reading material for the answer youve given (what academic field does motor saturation caused by too large of a difference between freq/Volt belong to, i've googled it and nothing comes up)