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  Solar Power Home         


Author: 3ndy
Date: Jun 8, 2010 11:45

Step by step guides and video.
Cut energy costs to bill
http://gogonai.com/home-solar-generation

Enri Patuly
Marketing
http://tinyurl.com/7hou5t
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  Re: centrifugal switch in a 3 phase motor?         


Author: dhky
Date: Jun 8, 2010 08:07

"bud--" isp.com> wrote in message
news:a1078$4c0695bb$cde8d56d$32534@DIALUPUSA.NET...
> James Sweet wrote:
>> Rich. wrote:
>>> "James Sweet" gmail.com> wrote in message
>>> news:hu4fp8$c6j$1@news.eternal-september.org...
>>>> I picked up a fractional HP 3 phase induction motor and was surprised
>>>> to find that it contains a centrifugal switch. It looks just like the
>>>> sort used in single phase motors to control the start winding but it
>>>> doesn't seem to be connected to the windings in any way. Is the purpose
>>>> to tell a controller that the motor has been stalled? Perhaps it came
>>>> from a rollup door drive or something? Maybe this sort of thing is
>>>> common but this is the first I've encountered it.
>>>
>>> Got pictures of it?
>>
>>
>> Sure, I just took a few. It's a 1/3HP motor with dual shafts and a flange
>> mount on one end. The black wire from the switch that appears to go to
>> the windings is actually just tied into them physically, apparently to ...
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  Re: Why alternator's diodes are not located away from stator* ?         


Author: dhky
Date: Jun 8, 2010 07:56

"James Sweet" gmail.com> wrote in message
news:hue5pf$vf1$1@news.eternal-september.org...
> TE Cheah wrote:
>> If diodes are located away from *, then [i] air cooling of * will work
>> better ; no obstacle exist @ end of alternator to block air flow
>> pushed through * by impeller [ii] given these diodes produce 1 - 1½ v
>> of
>> voltage drop ( per
>> http://en.wikipedia.org/wiki/Diode#Current.E2.80.93voltage_characteristic
>> ), so a 80 amp output will produce 80 - 120 w of heat which ( if
>> cooled by heatsinks ) will not flow into * & reduce ampere output, or
>> toward & into battery.
>>
>> I use an aluminium dish, copper bolt, old wires & heatsinks to cool my
>> Denso alternator, & found cooling produces more amps & voltage esp
>> when engine idles @ just 550 rpm, exactly as per
>> www.aa1car.com/library/charging_checks.htm where I learnt that the
>> cooler is alternator, the more amps are produced.
>
> ...
Show full article (1.41Kb)
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  Re: 3 phase Vrs 1 Phase Power         


Author: dhky
Date: Jun 8, 2010 07:55

"Salmon Egg" sbcglobal.net> wrote in message
news:SalmonEgg-C3C846.21115906062010@news60.forteinc.com...
> In article news.usenetserver.com>,
> "Kissi Asiedu" aol.com> wrote:
>
>> In terms of utility bill, would a three phase power cost more than a
>> single
>> phase? Considering all loads equal.
>
> There is somewhat additional investment in providing three phase. Single
> phase motors will not be as efficient as three phase motors. In small
> installation, it is probably simple and cheaper to just use single phase
> motor, especially for units under one horsepower.
>
> Bill
>
> --
> An old man would be better off never having been born.
-----
And miss all that comes in between birth and old age (where I am now)? ...
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  Written pole motors         


Author:
Date: Jun 8, 2010 01:22

This U.S. company says they can make larger single phase motors up
to 75 horsepower. I was wondering about the good and bad points of
this. http://tinyurl.com/24c92bs

Thanks.
2 Comments
  Re: 3 phase Vrs 1 Phase Power         


Author: James Sweet
Date: Jun 8, 2010 00:09

>
> Each EU country seems to have a single phase limit, i.e. the
> max current you are allowed on a single phase supply before you
> have to take a 3-phase supply (for which there is no limit).
>
> In the UK, the single phase limit is 100A, which is enough for
> most homes, so 3-phase into the home isn't very common. You can
> ask for it though as it runs past in the street, and it will
> be forced on you if you would otherwise need to upgrade a single
> phase supply above 100A. In some other EU countries, the single
> phase limit is as low as 20A, in which case just about everyone
> has a 3-phase supply.
>
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1 Comment
  Re: Silver, Gold, Mind Control & Social Engineering         


Author: Archimedes' Lever
Date: Jun 7, 2010 21:15

On Mon, 7 Jun 2010 09:30:54 -0700 (PDT), Visual Purple
gmail.com> wrote:
>I was wrong

You was wrong about anything that you ever said.

Take your retarded horseshit to a kook group, kook.
no comments
  Surge Supressor Clamping Voltage         


Author: Rick
Date: May 14, 2010 05:14

Hi,

I was looking at this surge supressor:

Tripp-Lite model HT1210SAT3

http://www.tripplite.com/en/products/model.cfm?txtSeriesID=829&txtModelID=4486

The specs say "Let through rating 330, 400, 400"

it's my understanding that is the clamping voltage, the max voltage
the supressor allows to pass thru. Why it lists 3 values instead of
just one value?

Thank you in advance,

Rick
1 Comment
  Call for Papers: The 2010 International Conference of Applied and Engineering Mathematics (ICAEM 2010)         


Author: WCECS 2009
Date: Jan 29, 2010 11:16

CFP: The 2010 International Conference of Applied and Engineering
Mathematics (ICAEM 2010)
From: IAENG - International Association of Engineers
http://www.iaeng.org/WCE2010/ICAEM2010.html

Draft Paper Submission Deadline: 6 March, 2010
Camera-Ready papers & Registration Deadline: 31 March, 2010
WCE 2010: London, U.K., 30 June -2 July, 2010

The conference ICAEM’10 is held under the World Congress on
Engineering 2010. The WCE 2010 is organized by the International
Association of Engineers (IAENG), a non-profit international
association for the engineers and the computer scientists. Our
congress committees have been formed with over two hundred and eighty
committee members who are mainly research center heads, faculty deans,
department heads, professors, and research scientists from different
universities like Cambridge, MIT and Oxford etc.

The conference proceedings will be published by IAENG (ISBN:
978-988-17012-9-9) in hardcopy. The full-text congress proceeding will
be indexed in major database indexes so that it can be assessed
easily...
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Author: hero
Date: Jan 29, 2010 10:54

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