What's the capacitor on my air conditioner condenser do? I thought that was its purpose. I don't know much about other than a 17 dollar part every two years keeps the wife from smelling like a pig
On Fri, Jun 4, 2021, 10:42 AM Chuck McCown via AF <[email protected]> wrote: > Most, if not all, VFDs have a speed ramp up that is programmable. So you > can set the starting amp limit to whatever you want within certain bounds. > > *From:* Mark Radabaugh > *Sent:* Friday, June 4, 2021 4:52 AM > *To:* AnimalFarm Microwave Users Group > *Subject:* Re: [AFMUG] Fort Bliss lift station troubleshooting > > No, AC motors don’t work that way. Though you have the right idea, it’s > just called a variable frequency drive. Rectify the AC into DC, stick it > in a big capacitor, and turn it back into AC at whatever frequency you want > the motor to spin at. Slowly ramp up the speed and it takes a lot less > energy, at least in a pumping application. Or really any application > where starting the load moving doesn’t require a lot of breakaway > torque. > > Mark > > On Jun 3, 2021, at 10:28 PM, Steve Jones <[email protected]> > wrote: > > I assume you cant just put a massive capacitor on it? > > On Thu, Jun 3, 2021 at 7:14 PM Jaime Solorza <[email protected]> > wrote: > >> Exactly...that's what they messed with it. >> >> On Thu, Jun 3, 2021, 5:56 PM Chuck McCown via AF <[email protected]> wrote: >> >>> Systems I worked on like this had an alternator circuit that would make >>> two main pumps take turns each operation. >>> >>> I also worked on remote C.O. buildings that had dual HVAC systems. >>> After a power failure the generator would come on but it could not start >>> both systems at the same time. I had to put a cut out on one of the HVAC >>> systems to kill it if there was a commercial power outage. >>> >>> Unless you work with large motors, you have no appreciation for starting >>> loads. >>> >>> *From:* Jaime Solorza >>> *Sent:* Thursday, June 3, 2021 5:02 PM >>> *To:* AnimalFarm Microwave Users Group >>> *Subject:* [AFMUG] Fort Bliss lift station troubleshooting >>> >>> After going through the drawings and consulting with original design >>> engineer on this project installed in 2007, we found one issue right >>> away...the water company techs made some changes to try to get pump 3 and 4 >>> to run simultaneously...kept tripping breaker. >>> The system was designed for 600amps maximum but when pump 3 starts up it >>> goes above 600, drops and stays at around 204.x while working, then when >>> they turn pump 4, it starts up above 600amps and trips breaker. >>> The system was designed to work with pump 1, a smaller motor and pump 3 >>> , and pump 2, same as 1, works with pump 4. >>> On Monday, we will rewire to original design and make some changes to >>> PLC programming and relays....they need some better level transmitter >>> installed but that's another project. >>> BTW, the enclosure is water tight and under a canopy for added >>> protection. >>> >>> >>> ------------------------------ >>> -- >>> AF mailing list >>> [email protected] >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >>> -- >>> AF mailing list >>> [email protected] >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > ------------------------------ > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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