Quasi Arc (ACP200)

[Debs.]

Hiya!,
I`ve been given a large old single-phase air-cooled welder.....made by "Quasi-Arc"; it`s labeled as "ACP200" and might be a child of the `60`s.

Has 2 tap-changers giving range from 20-200 Amps. and is rated:
Primary: 190/480 V. 50Hz.
Secondary: 60/90 V. (No Load)

It was delivered with 40 (yes 40!) metres (each) of 'hot' and 'cold' cables!

I have a tractor-mounted log splitter project in the 'offing' and would like to use this set for welding the 'heavy gauge' components.
Given the plated primary voltage is 190: would it be ok to use it on my workshop`s 240 V.?....The set already had a 32A. 'bluey' on it, but `wanted to check with the experts here, before using it.

Thanks and with kind regards,
Deb.

 

[madkayaker]

190V is the old continental 1PH will be fine on 230V

 

[wyn]

There's a bit of info in this thread.

Used one a few years ago......not bad machines.

 

[TechnicAl]

Ive always been a bit curious as to the origin of that name. Why would someone call a company QUASI-ARC.
As far as Im aware Quasi means similar but not quite the same, not quite right. So the company is NOT QUITE RIGHT - ARC.
As I say its always puzzled me.

Just as an aside I believe Quasi-Arc was bought by Murex who were later bought by ESAB.

 

[Tigman]

Ive got an old oil filled Quasi-Arc welding set , its a lovely old beast 415v 300 amps , only use it when pipe welding now .

 

[matt1978]

Ive always been a bit curious as to the origin of that name. Why would someone call a company QUASI-ARC.
As far as Im aware Quasi means similar but not quite the same, not quite right. So the company is NOT QUITE RIGHT - ARC.
As I say its always puzzled me.

Just as an aside I believe Quasi-Arc was bought by Murex who were later bought by ESAB.

Similar but not quite the same, not quite right-modo.

That dont sound right either does it

 

[simon718]

http://www.google.co.uk/search?hl=e...Mfjd8KYI&sa=X&oi=glossary_definition&ct=title

seems you are about right Al

 

[goff]

Quasi-Arc welding company

The Quasi-arc welding company was acquired by the BOC group in 1936 , The Quasi-arc company invented the Quasi-arc welding process and had refined welding electrode's, Early electrode's were coated in Asbestos !!!!! BOC wanted to enter the consumable market and aquired Quasi-Arc in 1936 , I think they droped the name sometime in the 1960s, I have a Engine Driven DC welding plant model No GB 400 that is around late 50s /early 60s that i am restoring, There is very little information on the webb about the company, I tried to find out about this welder by going to my local BOC , No joy
I think boc would have destroyed all the books ect, You will find that the Static welder that you have was made to last, thats why it is still around today 50years later, It will run mild steel electrode very smoothly but not Low hydrogen electrde's coded 7018 , regards Goff

 

[Debs.]

Thankyou very much for the helpful and interesting replies everyone.
Before using the Quasi-Arc set; I`ll take the top cover off and give it a 'once-over', a blast out with the airline (cobwebs/dry-leaves have got into the open base) and check the supply cable/plug for surety of connections.
Then I`ll use a few rods to practice to get the hang of the settings.....although, I doubt if I`ll ever need all of those 200 Amps.

 

[Drains]

It will run mild steel electrode very smoothly but not Low hydrogen electrde's coded 7018 , regards Goff

Goff, I reckon at 90v OCV that set will run any electrode that will run on AC, 7018s included!

 

[zzr1200]

I don't know if your seen this link for a Quasi-Arc Welding Manual


http://books.google.co.uk/books?id=...ng&lr=&ei=ly66SamcBZ-2yASt7LW-Cw&pgis=1&hl=en

 

[goff]

Drains you are right about the 60/90 ocv, The welder should run any rod on on the 90 v taping, regards goff

 

[Debs.]

Hiya!.....

Just to update the thread:
I took the Quasi-Arc welder`s 'lid' off; checked the supply-connections/tappings, made surety of a good case-earth and then blew-out the (40+ years of) dust from the transformer.

I`ve tried-out the welder on some 5 mm. plate and I must say it`s MUCH easier to use and get really good results than was my 'old' Telwin 140!

On the 90 V. settings, the arc is wonderfully easy to strike (in fact, it seems to leap off the rod!) and is very stable and I was delighted to obtain a neat weld (with good penetration) on my first pass.

The welder isn`t as noisy as I feared; just a gentle hum.
All in all, I`m thrilled with my 'old beast' of an acquisition: "Old but Good"

Thanks very much for the replies everyone.

 

[alexis]

quasi arc

Hello,

we have just inherited a quasi arc welding maching.

it has been in our contaciner for the past 5 years but have just found the plate and what it actualy is.

are these worth money and do people want them anymore as it is old.

 

[TechnicAl]

I suspect you will get more for it as scrap