HomeRoast Digest


Topic: OT power conditioners (was) Variac purchase (5 msgs / 117 lines)
1) From: kevin creason
<Snip>
While we are on the subject of correcting power issues and have all the
electric experts paying attention:
Does anyone have any light to shed on the whole-house type of power
conditioners? Units connect in to the main breaker box and absorb highs and
fill in the lows like a giant capacitor or variac I imagine. They claim to
increase life of your home's appliances and electrical devices (like our
coffee roasters) and even trim power bill a little over time.
I've been wondering if they are more hype than help, more about getting the
bills out of my wallet than actually providing a service.
- Kevin
Homeroast mailing list
Homeroasthttp://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20">http://lists.sweetmariascoffee.com/listinfo.cgi/homeroast-sweetmariascoffee.comHomeroast community pictures -upload yours!) :http://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20

2) From: Michael Wascher
They're designed to eliminate spikes. They won't do anything to help low
voltage. That said, they can provide some useful protection.
On Thu, Aug 21, 2008 at 8:38 PM, kevin creason  wrote:
<Snip>
-- 
"Crime does not pay ... as well as politics." --Alfred E. Newman
Homeroast mailing list
Homeroasthttp://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20">http://lists.sweetmariascoffee.com/listinfo.cgi/homeroast-sweetmariascoffee.comHomeroast community pictures -upload yours!) :http://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20

3) From: Jim and Tina Wheeler
We lost one household surge suppressor to a really nasty spike that fried
other people's appliances and the power company paid for a replacement.
They are a useful addition to the arsenal against bad power.
They don't condition power, just stop spikes in the power.  They don't help
with surges, swells, or sags.  For that, you will need other types of power
protection.
-- 
Jim in Skull Valley
On Thu, Aug 21, 2008 at 6:53 PM, Michael Wascher  wrote:
<Snip>
Homeroast mailing list
Homeroasthttp://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20">http://lists.sweetmariascoffee.com/listinfo.cgi/homeroast-sweetmariascoffee.comHomeroast community pictures -upload yours!) :http://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20

4) From: Rich
I have heard the adds from OPPD here across the river and it sounds like 
its a line noise filter and an inductive spike suppressor.  Does nothing 
to even out the normal line voltage swings that are caused by system 
load variations.  If I were interested I would call their customer 
service and have a chat with the marketing person and they will have all 
of the technical details you want, and then some.  I seriously doubt 
that it is any form of a CVT as that would be rather large and the 
internal losses would run up your bill, not lower it.  The 
filter/suppressors do work and can save you repair costs.
kevin creason wrote:
<Snip>
Homeroast mailing list
Homeroasthttp://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20">http://lists.sweetmariascoffee.com/listinfo.cgi/homeroast-sweetmariascoffee.comHomeroast community pictures -upload yours!) :http://www.sweetmariascoffee.com/gallery/main.php?g2_itemIdx20

5) From: silascoelho
Kevin
Some background on this to help to answer that:
those power conditioners, ussualy as you sad are type of giant capacitors, 
that theoretically should help in 2 areas (when well designed) absorb the 
'spikes' and use some of that energy (hard to really save much) to fill the 
gaps (efficiency can really be a problem here). Another area is to correct 
the Cos Phy Factor , that is bassically a relationship between current and 
voltage on the line. The Energy company pays a lot of attention to the cos 
Phy factor, because, in large scale, can create a monster problem of heat 
losses on the power lines, for homeowners (on the countries where the cos 
phy measurement is not applied on homes, just industries) the cos phy doesnt 
really does not represents a big thing. Can we improve the reliability of 
our appliance fixing the cos phy? Probably yes, but in a very,very long term 
, and almost certainly will not pay back your investment (for regular 
homes).
On the area 1 (fill the gaps), it will depend very much on the power 
conditions of your line. I some few countries where power outgages happens 
in an almost daily basis, forcing to have not  power conditioner, but really 
a no-break for a normal and regular operation. Certain regions, in some 
other countries , (specially these at the end of low voltage transmission 
lines) can have some specific conditions to reccomend that, but again, with 
a global perspective, not knowing the details of you power line, I will not 
reccomend that, unless you got an extremely good bargain, where you dont 
expect too much payback.
hope help to answer
Silas
Ps.:I'm assuming those power conditioners have , at least, a very good surge 
protection inside.


HomeRoast Digest