Needs Pictures: 0
Picture(s) thanks: 0
Results 31 to 45 of 46
-
26th July 2014, 07:52 PM #31
Thanks Ueee and .RC. Simple when it is put like that. I wish I had learnt about 3ph when I was a bit younger.
Dean
-
26th July 2014 07:52 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Age
- 2010
- Posts
- Many
-
26th July 2014, 08:22 PM #32GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,775
-
26th July 2014, 08:29 PM #33
copper
hi
I was reading recently, my FLOYD text book of electronics, the standard work . They reckon 3 phase is cheaper, more economical than single phase for a given amount of power usage. This is because 3 phase systems use less copper wire than single phase systems . In a industrial environment they count every cent . Mike
-
6th August 2014, 11:41 PM #34Member
- Join Date
- Mar 2014
- Location
- Norway
- Posts
- 53
As it happens that is my blog
Good to see people getting use from the uploaded manual.
Did you get the machine up and running? Don't toss the variator if it's working. It works as a torque multiplier in low speeds which the VFD can't hold a candle to. If your getting noise, it can also be the motor bearings. Remove the internals of the under lathe cabinet and grease the motor if you are hearing a whine.
I would recommend getting a rotary phase converter before ditching any of the lathe's components.
Paul.
-
7th August 2014, 12:33 AM #35Product designer retired
- Join Date
- Nov 2006
- Location
- Heidelberg, Victoria
- Age
- 80
- Posts
- 2,251
I feel sick
Hi Stu, your post No.14 made me feel sick. To think you and I paid well over $500 for our Drives Direct VFD's and with so many hassles.
1 5KW VSD VFD Inverter Single Phase 240V TO 3 Phase 415V Variable Speed Drive | eBay
I'm going to hang myself after I finish the bottle.
Ken
-
7th August 2014, 12:47 AM #36GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,775
Hi Ken,
Hey being on the bleeding edge costs . Don't feel to bad, just had a look at a quad HD phone, looks fantastic! likely worth about $700..how much will it be going for in 4 years?
I wonder if its a mod or they are coming out of China like that?
Stuart
-
7th August 2014, 01:17 AM #37.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,841
-
7th August 2014, 01:17 AM #38SENIOR MEMBER
- Join Date
- Aug 2011
- Location
- victoria
- Posts
- 524
-
7th August 2014, 09:25 AM #39
Going back to post 14 and following, I have to say the eBay item is a standard 380V 3-phase to 3-phase Huanyang VFD. I think someone should talk to the seller and get a lot more info before getting high hopes.....
There are lots of mis-advertised VFD coming from China and the seller may have just passed that bad information on. I've read quite a lot that say something like "suitable to run 380V 3-phase motors from 220V single phase", meaning "if rewired from star to delta configuration" which means little to uninformed sellers....Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
-
7th August 2014, 10:47 AM #40.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,841
-
7th August 2014, 01:23 PM #41SENIOR MEMBER
- Join Date
- Aug 2011
- Location
- victoria
- Posts
- 524
-
7th August 2014, 01:46 PM #42
-
7th August 2014, 05:25 PM #43GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,775
-
7th August 2014, 08:21 PM #44Product designer retired
- Join Date
- Nov 2006
- Location
- Heidelberg, Victoria
- Age
- 80
- Posts
- 2,251
240v 1ph to 415v 3ph
Well Stu, we might be safe after all being the only two to have the special Direct Drives vfd.
Perhaps we weren't fleeced after all.
Ken
-
7th August 2014, 10:25 PM #45SENIOR MEMBER
- Join Date
- Jun 2011
- Location
- Australia east coast
- Age
- 71
- Posts
- 1,469
Interesting comment seeing as one of my complaints WRT the Kopp variator in my lathe is the lack of torque in low speed high range (400 rpm). A heavy cut or a big drill bit causes very noticeable loss of speed. I've pulled my variator apart and changed the oil to one I know is correct. There's no visible wear or noise from it but the lack of torque has always been there. PDW
Similar Threads
-
Chipmaster Thread Cutting
By Piers037 in forum METALWORK FORUMReplies: 24Last Post: 10th August 2013, 01:08 AM -
Colchester Chipmaster thread engagement lever problem
By achjimmy in forum METALWORK FORUMReplies: 10Last Post: 10th June 2013, 03:10 PM -
Colchester
By pjt in forum METALWORK FORUMReplies: 18Last Post: 8th June 2012, 02:38 PM -
Toowoomba:colchester chipmaster lathe $1495
By damian in forum METALWORK FORUMReplies: 5Last Post: 16th February 2010, 11:40 AM -
Colchester
By footz in forum METALWORK FORUMReplies: 18Last Post: 1st October 2008, 10:42 PM