What is a var or kvar - reactive or imaginary power explained

What is a var or kvar? For engineers, electricians or anyone dealing with electricity, we ask them to take a leap of faith to believe and therefore understand electricity - something that we can’t see - but then we even go one step further to ask them to believe in imaginary power which, by definition, doesn’t exist – or does it? For us to understand what reactive or imaginary power is, this video focuses on the technical definition as well as several analogies so that hopefully, we can all come to an understanding of what a var or kvar really is. At Eaton's Power Systems Experience Center (PSEC), you can learn all about capacitors, inductors and reactive power and power factor (PF).

[navyretired]

I had to watch this 2 dozen times for it to begin to sink in. Thank You

[JohnWilliams-qunr]

Well done folks, can't offer much to improve it! Thank you to the group of people who obviously had a clear goal of simplifying these concepts. It was particularly interesting and important, I think, to have the different visual analogies very good instruction method.

[Morphasella]

you are amongst the best teachers in youtube alongside electro boom

[kritishrivastava]

Best explaination ever. Thank you so much

[virtualtreadmillwalknature]

Such a great video! you guys are doing a great job!

[douglaswhalen]

Eaton, thanks again for great content.

[reuvenmoshe]

ive been asking my teacher a millon times what kvar actually mean but she responde with no answer saying its not important
thank you so much for explainig it in a very good way

[JefffRushton]

Went in with low expectations. Left very impressed 👍

[jaydeeppurohit]

Very nice explanation on reactive power...👏

[rohitkasgar]

VAR/reactive power when viewed in the form of those power cycles which were initially shown, 2 positive and 2 negative in one complete cycle(for purely inductive/capacitive) load. What do they represent in that waveform? Rms value of that waveform, avg value or what?

[SampleroftheMultiverse]

I know a welding fabrication shop that has problems burning up motor and other electrical systems problems. Would a capacitor bank system with variable tabs help them? is that something you sell.

[Jey]

So, the reactive power is not considered a loss in power between power input and output for a generator, for example?

[khalidmorales]

Sir, needsyour help I need the illustrated power factor correction book, if you have kindly furnish one with my discounted price asap.

[mostafakarandi]

Very nice video because demonstrating with coceptual approching thanks a lot

[buddy]

Was not expecting the Kelly Price reference 😂

[JSunday]

So...is reactive power the power used to create and maintain the magnetic field in the motor?

[jamminwrenches]

My residential power provider has started charging for KvA which includes Vars. You stated power companies only charge large commercial for the wasted power. No even residential providers have learned a new way of increasing your electric bill without technically raising prices.

[ahmadmohmed]

@4:06 "Its easy to see the 120Hz power curve here because there are two complete power cycles for every one 60Hz Voltage Cycle"! where is that on the Graph?

[jonkocen]

So I think a KVAR for my home would only level out the incoming current instead of having spikes when my AC compressor turned on. The KVAR would make up the difference needed by the compressor starting, then "refill" when the AC is in run mode.

[Haitao]

Simple ! Either different PF in power calculation involve PF will be equal in KW "without cosider of Time". The power factor is the efficiency of performance.
A 0.7 Pf is 70% of efficiency, another 0.98 is 98% efficiency. Imagine 2 biscuit machines with a 100 pcs/hour as reference with different pF. in production. An order in 980 biscults; 0.98 pf take 10 hour to complete the job, where a 0.7 pf take 12.256 hour to complete. Who is the winner instantly can be seen. By define of machine with manhour just can easily be explained as cost saving.