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sivert55 
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 Topic: Power-Save 1200
Posted: July 03 2007 at 12:13pm |
Are there any electricians here that can tell me how this works? Or if the concept is scientifically sound?
I can't find anyone that uses one, but they're fairly new. If they can cut electricity costs on iductive motors, that would be a big help.
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Sold it all. Building a 285 with dedicated fishroom.
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jeffras
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Posted: July 03 2007 at 12:29pm |
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That looks pretty cool. The demos seem to speak for themselves. I would like to hear from an electrician also about the demos.
Thanks for sharing!
Edited by jeffras - July 03 2007 at 12:30pm
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Jeff Rasmussen
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rstruhs
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Posted: July 03 2007 at 3:41pm |
It sounds to me like it is a capacitor that is being used for power factor correction. Power factor correction works great in multi-phase systems and systems with a lot of inductive load. Our ballasts and the other things listed in the advertisement are all inductive loads. The only thing I would question is the actual savings.
Maybe some of the other electricians will comment.
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Rodney, Sandra, Jeffery, and Laura Struhs
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bbeck4x4
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Posted: July 03 2007 at 6:47pm |
not an electrician, but I can pretend  , I saw this item displayed on the front counter at ews, they didn't sell well and they pulled the display, all that was inside the box was two very large capacitors, for the price of the unit it would take a while to pay for itself, IMHO the display had a dryer motor with a amp meter hooked up and you could switch the unit on and off, and see the different amp draw, I would love to see what that could do in real life on my power bill. so, all in all I am skeptical, if they really worked as well as they claim it seems that they would have sold better at EWS. edit, On seeing there demo I have a lot of inductive loads on treadmills, and pool motors, maybe I can talk GG into testing some out and seeing if it makes a difference??? Brian
Edited by bbeck4x4 - July 03 2007 at 7:01pm
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jfinch
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Posted: July 03 2007 at 7:43pm |
My understanding of residential power meters is that they measure real power in kilowatt-hours, KWh. Power factor adjustment, which is what it appears this device does (read: capacitors), adjusts the apparent power, measured as kilovolt-amps, KVA, by reducing the reactive power and would do nothing of any real consequence to reduce you power bill. Does that make sense? 
Home power meters read the instantaneous voltage and amps, multiplies them together then integrates the product over time (basically adds all those little bits together). This is "real power". This method of measurement will not see the additional "power" caused from a low power factor.
To measure apparent power you should measure the RMS voltage and RMS amperage then multiply them together. If power factor is equal to 1, then apparent power = real power. Otherwise apparent power will always be greater then real power.
Ok, I just reread what I wrote and was about to delete it all 'cause it's a bit complicated, but decided to leave it (someone might find it interesting??). Bottom line:
Don't waste your money, imo.
Edited by jfinch - July 03 2007 at 7:46pm
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Mike Savage
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Posted: July 03 2007 at 7:55pm |
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jeffras
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Posted: July 04 2007 at 1:39am |
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Everything I have read about this online has been anecdotal evidence that this saves money. I would save the $300 bucks. If it really worked thee would be all kinds of chatter online and I just can;t find it.
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Jeff Rasmussen
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Posted: July 04 2007 at 2:52am |
We just cut our electric bill significantly just by turning off ALL the breaker switches in the house, turning them on one at a time and watching the wheel go round and round on the electrical box outside. I recorded how long it took for the wheel to go certain distance and then moved onto the next switch. At the end, we could sit down and figure out where the most of the electricity was being spent - and none of it was from our tanks.
I was amazed how much power a UPS and a computer put together use. I don't leave my computer on all night anymore and I replaced the UPS for a good surge protector. We put our stereo/t.v./cable box on a surge protector and turn it off at night. We have an air purifier that is now on a timer. We straightened and cleaned our dryer vent. We fixed our thermostat to the airconditioner (stayed on longer than it should have). And we unplugged the heater coils on the roof (ouch). We wouldn't have found any of these problems if we hadn't have done the breaker switch test. (Well, except for the dryer hose.)
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Mike Savage
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Posted: July 04 2007 at 8:13am |
That looks like a neat little gadget.
Mike
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