- Location
- Massachusetts
What type of monitor are we viewing here? (looks pretty cool)
It is a Dranetz-BMI PowerXplorer PX5 it is very cool.
Now if only I had a little bit of a clue how to operate it or interpret the data it provides.
What type of monitor are we viewing here? (looks pretty cool)
the formula is not too bad:this is some complex stuff
Would a slow ramp-up of voltage with a 3ph autotransformer help?You are very smart to be cautious here Bob. I have seen PF correction caps EXPLODE!! Not little poofs either. Major shrapnel damage all around. Good luck.
The .8 PF is not so good.Looks ok to me. The harmonics might be considered approaching marginal but they are below 5%. The flicker is probably ok as well. You have about 250 kvar of reactive power and 200 kvar of capacitiors.
Thus the need for power factor correction.The .8 PF is not so good.
At the point of resonance, the voltage across the capacitor rises towards infinity causing the capacitor to fail. It is a frequency thing not an applied voltage issue.Would a slow ramp-up of voltage with a 3ph autotransformer help?
But wouldn't we be delivering less energy to the resonant circuit?At the point of resonance, the voltage across the capacitor rises towards infinity causing the capacitor to fail. It is a frequency thing not an applied voltage issue.
My question is what is the harmonic profile?
Can your device produce a harmonic histogram? This would tell us what harmonics are actually in the system.
At the point of resonance, the voltage across the capacitor rises towards infinity causing the capacitor to fail. It is a frequency thing not an applied voltage issue.
The voltage would rise towards infinity?
I thought this would be a parallel resonant circuit? In that case the impedance would be lowest at the resonate frequency and the currents would rise.
Here is an interesting read on this subject:
http://www.elec.uow.edu.au/iepqrc/files/technote2.pdf
Thanks Steve,
I had my series and parallel resonant circuits reversed :roll:
I think so.
I plan on leaving the meter in place for about a week. At that point I will download the file from the meter into the manufacturers software and I believe it can generate almost any kind of report imaginable.
Unfortunately the man who really knew how to use this meter has left the company.
Bob, just for giggles, would you switch off the capacitors for a while and record that data as well so you have comparative values?
Did he ever have them on?