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24th June 2003, 02:28 PM #1Novice
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Three phase to convert or not to convert?
I have three pieces of Three phase gear. A combination machine, a band saw and a lathe.Is there a convertor/rectifier which allows me to run three phase gear effectivly off singlephase input. Or do I need to install three phase to my Garage.
Any ideas would be appreciated
Greg"First To See the Sun"
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24th June 2003 02:28 PM # ADSGoogle Adsense Advertisement
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24th June 2003, 02:54 PM #2
Greg,
There was a pretty comprehensive conversation on the topic of three phase power a couple of months ago.
A search on "three phase" should find it.
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24th June 2003, 02:58 PM #3
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24th June 2003, 03:06 PM #4Novice
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Thanks
I'll check it out.
Greg"First To See the Sun"
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24th June 2003, 08:12 PM #5
As to the above post Greg I think you'll find a NZ link that may aid in your enquiries.
CheersJohnno
Everyone has a photographic memory, some just don't have film.
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24th June 2003, 09:56 PM #6Novice
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What link are you referring to.
I could not find a post that had any kiwi contibutors?
Thanks
Greg"First To See the Sun"
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24th June 2003, 10:22 PM #7Novice
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Forget that last bit I found your connection
Thanks
Greg"First To See the Sun"
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25th June 2003, 09:46 AM #8Senior Member
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In case you get misled in some parts of this
There are ways of running 3 phase gear off 1 phase BUT it is horribly inefficient and your power authority would probably not approve! It is strictly for emergencies only. Sort of 3 hp in - 1 hp out, if your lucky!
If you are going to set up a decent workshop it is well worth while.
If you live in the right spot (I don't) 2nd hand 3 phase machinery can be found quite cheaply.
3 phase motors are more efficient - depending on type and useage can be a LOT more efficient particularly once you get over 1 hp. They can also be smaller and lighter. They can also be much simpler to reverse should you need to.
Oh! and if you do much welding (I know it is not woodworking) a decent size stick welder is just so much better than those little toy things!GeoffS
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25th June 2003, 12:58 PM #9
As I see it you have three options:
1) Get three phase power put on (if possible)
2) Buy an invertor
3) Buy new single phase motors (making sure of course they have similar H.P. ratings, RPM and are same construction, usually T.E.F.C.- Totally Enclosed Fan Cooled)
Get on the phone to you electricity supplier and a few sparkies, ring some electrical wholesalers and do an internet search on "phase convertors" and "rotary phase convertors". Whip out your calculator and see what weighs up as the least expensive.
Mick
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29th June 2003, 09:58 PM #10
option 4 buy a thumping great generator!!!!
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22nd September 2007, 11:07 PM #11043TURNING
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- Adelaide, SA
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yer you can get a 10KVA gen set for $3500 off FeeBay now 10Kva will run 4x 2Hp motors similtaniously
CALCULATION is ....AMPS x 1.42 = KVA
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23rd September 2007, 07:53 PM #12
If you have 3 phase you can buy a $10,000 table saw for $500.
Conceded you also need some room for it.
See this one“We often contradict an opinion for no other reason
than that we do not like the tone in which it is expressed.”
Friedrich Nietzsche
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23rd September 2007, 08:02 PM #13
PS
What's with the e-bay's naming-avoidance-exercises? Feebay Freebay Flippenbay?“We often contradict an opinion for no other reason
than that we do not like the tone in which it is expressed.”
Friedrich Nietzsche
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23rd September 2007, 10:01 PM #14
Saw this on the new inventors a few weeks ago .
http://www.phasechanger.com./index.php
I have no connection ( no pun intended ) to this company ,I just saw it on TV and went and investigated the website .
May be interested myself a bit later on down the track.
Kev"Outside of a dog a book is man's best friend ,inside a dog it's too dark to read"
Groucho Marx