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Author Topic: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U  (Read 8936 times)

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Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #12 on: March 01, 2017, 04:32:12 PM »
Today I had the arrival of last and significant piece of my puzzle.  :)

I am impressed of what Chinese industry deliver for 1/3 of the price of what you get from International brands them also using China as manufacturing base. 
The product LW28-20/3 ( GB14048.5 ) this is 7.5KW  15A  AC-23 = inductive loads
Comes with certification.

I am going to use it about switching between two connectivity modes of VARIAC Transformer. 
Mode 1:  0 ~ 230V  = LINE connection 
Mode 2:  0 ~270V =  BOOST connection 
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Offline Kiriakos GR

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Only place for me having my own Shopping Therapy  ---- This is the hardware store ;)

There is the proper way for Cutting a Square Hole in an Electrical Enclosure



But highest secret this is the quality of masking tape it self,  it must be 100% glue residue Free, and it must be perfectly flat.
I am always using TESA 4435 outdoor UV, and I am 100% satisfied !

I did the mistake to order Blue tape from Ebay - China, and I got a plain garbage which costed me 5 EUR and it is close to unusable ( (it is not glue residue free) .  >:(
Today I did manage to find the real thing and I am extremely happy.  8)
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Offline giorgos

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #14 on: March 12, 2017, 01:37:46 PM »
Today I had the arrival of last and significant piece of my puzzle.  :)

I am impressed of what Chinese industry deliver for 1/3 of the price of what you get from International brands them also using China as manufacturing base. 
The product LW28-20/3 ( GB14048.5 ) this is 7.5KW  15A  AC-23 = inductive loads
Comes with certification.

I am going to use it about switching between two connectivity modes of VARIAC Transformer. 
Mode 1:  0 ~ 230V  = LINE connection 
Mode 2:  0 ~270V =  BOOST connection

These international brands are ussually demands some quality production standards when they are choosing China for production (e.g. Apple , Sony Philips etc) Conversely purely chinese brands doesnt follow these standards, thats why the lower cost and many times low reliability.

Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #15 on: March 13, 2017, 08:37:48 AM »
Today I had the arrival of last and significant piece of my puzzle.  :)

I am impressed of what Chinese industry deliver for 1/3 of the price of what you get from International brands them also using China as manufacturing base. 
The product LW28-20/3 ( GB14048.5 ) this is 7.5KW  15A  AC-23 = inductive loads
Comes with certification.

I am going to use it about switching between two connectivity modes of VARIAC Transformer. 
Mode 1:  0 ~ 230V  = LINE connection 
Mode 2:  0 ~270V =  BOOST connection

These international brands are usually demands some quality production standards when they are choosing China for production (e.g. Apple , Sony Philips etc) Conversely purely Chinese brands doesnt follow these standards, thats why the lower cost and many times low reliability.


I am very close to support the contrary in 2017,  China does not need paying for re-branded goods when their own production this is certified and tested according to domestic and international quality standards.

Additionally I will say that such specific products they do not aim consumers households, in such items for industrial use any product selection this is made from electrician engineers.
Regarding longevity (life cycle) not all electrical circuits are made for frequent manual control.
Specific product (switch ) this comes with supplied documentation this predicting life cycle at full power load and frequency of daily use.

In the end of the day, I did my selection by shopping for the appropriate item this able to handle one specific application, by me taking the time to select the appropriate item.
They are others (electrician installers)  shopping industrial parts and be careless, and live by the hope that what ever they will order, this will be able to sustain crazy overloads and unlimited misuse.

Now because distance this is long ( China to Greece ) all that I am possibly missing this is product warranty in the event that this part suffering from production error issue.
I did my own inspection by measuring contacts resistance and I did not find any fault.
 
WEB site
http://www.glele.com/Product_show.aspx?cateID=1&id=168

Product PDF in English
http://www.glele.com/common/godownloads.ashx?id=168

   
Panel mount switch technical parameters ( AC-23 AC-22 AC-3) IEC 60947-3
http://www.ittsb.eu/forum/index.php?topic=1252.0
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Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #16 on: March 22, 2017, 08:40:11 PM »
I can now assume that all major parts for this upcoming project they are landed in Greece.  :)

Feel free to see detailed Panel meters unboxing topic.  http://www.ittsb.eu/forum/index.php?topic=1270.0
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Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #17 on: April 11, 2017, 11:30:43 AM »
They are still a few less significant bits that did not arrived at my mail box yet.
But sooner or later they will.   ;)

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Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #18 on: May 12, 2017, 04:40:32 PM »
Gentlemen  8) with huge pride I am presenting pictures of what a real professional brush this can do regarding scuff marks removal.
This is 120 Grit and I am after classic aluminum surface ( clean - But not polished to mirror finish ).

This is my Before / After test, and the outcome this is amazing.    ;D
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Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #19 on: May 12, 2017, 07:31:41 PM »
Ready for the next level  ;) 

Drilling holes and parts installation.   
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Offline giorgos

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #20 on: May 13, 2017, 04:17:10 PM »
Very nice finish!
 I have not ever work with this kind of tool, anyway I think that most important point for this procedure,is to keep brush in stable angle, and pressure on aluminium surface.

Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #21 on: May 13, 2017, 04:49:08 PM »
Actually they are involved allot more details.

Brush alone with axle this is half kilo of weight ... Rotation RPM .... weight of power tool it self ... stable hands and control.
Actually there is dedicated power tool just for this brush, with metal handle and shield against particles.
I could not afford paying around 300E for it, I do not do mass production this justifying cost of ownership.

While I am making the case for the Variac,  Variac transformer this is all ready working in to a wooden test box.
And Variac worked at helping me at controlling power drill RPM   ;)


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Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #22 on: May 13, 2017, 05:08:04 PM »
After 10 hours so far of workflow I am finally ready to start working at front panel.  ;)
When metal work this is over, next step this is a paint-job.
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Offline Kiriakos GR

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Re: 2017 - ITTSB project: Assembly of a Variac Powerstat 226U
« Reply #23 on: May 16, 2017, 05:58:09 PM »
95% of machinist work this is completed and I am getting closer to finish line   8)

For now it looks as this to be a magic picture this getting assembled slowly as the project this moves ahead.

 
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