Products > Test Equipment
High Current AC Source
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T3sl4co1l:
Played with one of these once, https://www.amp-line.com/
Well built, easy enough to use, programmable, very heavy...

Specifically, a 2V 1000A single phase model.  For testing power line current sensors.  I think the bulk of the weight was the output transformer.  Hm, it was 208/240V input, though I forget if we were using 3ph on it (industrial application, we had it available of course).

Tim
freeelectrons:

--- Quote from: Martin72 on July 09, 2023, 10:20:50 pm ---
Hmm, my 400A AC 2 phase stick welder cost me just $200.

Duty cycle at full tit is another consideration fan cooled or not.

--- End quote ---

Any links?
freeelectrons:

--- Quote from: Stray Electron on July 10, 2023, 01:20:08 am ---
--- Quote from: freeelectrons on July 09, 2023, 07:11:57 pm ---It does not seem like there are many accurate programmable ac current sources available.

--- End quote ---

  Oh yes there are! Pacific Scientific and Elgar just to name two of them.  I don't know how high their current ratings are but they are very accurate voltage and frequency wise and they are programmable.  I THINK you can also couple several Elgar units together to increase their current output and drive all of them from a single control module.  What kind of voltage output do you need?  400 amps is a lot of current and if you need that amount at any significant voltage, it's going to be a hell of a lot of Power!  If you just need a volt or two then you might be able to use an Elgar 251 or one of their 750 Watt models set to say 110 VAC and use that to drive a transformer that will give 400 Amps at 1/2 to 1 volt AC.  I've used the Elgar 251s and some of the PS units and I know that Elgar makes a 750 Watt output model and I think they make larger models but I have no experience with them.

--- End quote ---

Ill check them out. Compliance voltage I would expect to be no larger than 10V. I also looked for a transformer to drive that level of current and did not find any options. Elgar was purchased by ametek.
SoundTech-LG:

--- Quote from: tautech on July 09, 2023, 10:39:53 pm ---
--- Quote from: Martin72 on July 09, 2023, 10:20:50 pm ---So buying a welding transformer and feed him with a low/medium power source ist the cheapest way to gain the 400A current.

--- End quote ---
Hmm, my 400A AC 2 phase stick welder cost me just $200.

Duty cycle at full tit is another consideration fan cooled or not.

--- End quote ---

I think I remember my girl telling me that same story... :-DD
tautech:

--- Quote from: freeelectrons on July 10, 2023, 01:27:21 am ---
--- Quote from: Martin72 on July 09, 2023, 10:20:50 pm ---
Hmm, my 400A AC 2 phase stick welder cost me just $200.

Duty cycle at full tit is another consideration fan cooled or not.

--- End quote ---

Any links?

--- End quote ---
Got mine via our local online auction site, older but in good order.
Google Transarc 400 welder for examples but they will mostly be NZ/AU locations.
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