Superior Electric Powerstat variable transformer 1296DU

Is there an aftermarket device that can be added to a Superior Electric Powerstat variable transformer 1296DU that can digitally adjust the voltage wheel effectively making it an autotransformer?

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michaelkellett over 1 year ago +3

The most common use of the term "autotransformer" is for a transformer where the primary and secondary are both just taps on the same winding. The 1296DU is a variable transformer (often a Variac in…
beacon_dave over 1 year ago +2

There appear to be versions of the 1296DU that already have motors attached for digital control.
anniel747 over 1 year ago +1

1296DU is an autotransformer.

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0 michaelkellett over 1 year ago

The most common use of the term "autotransformer" is for a transformer where the primary and secondary are both just taps on the same winding.

The 1296DU is a variable transformer (often a Variac in the UK).

From your question I suspect that you want to adjust it automatically. This is possible but has problems and is much less common now than it might have been 50 years ago.

Mostly people use electronics to achieve the same result - you can buy adjustable AC regulators capable of handling power from a few watts to mega-watts.

The problems with a motorised variable transformer are its slow response and short life (due to wear on the brushes)

Can you explain what you want it for - it may be that there is a better solution.

They are obtainable ready made but you could fairly easily modify a manually operated variable transformer for a one-off.

https://www.ravistat.com/variable-auto-transformer-motorized-variac.php

MK
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0 jmurray32168 over 1 year ago in reply to michaelkellett

Thank you very much. This is very helpful
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0 jmurray32168 over 1 year ago in reply to jmurray32168

we use them for product development and certification testing in a laboratory environment and have voltage regulation requirements. We make commercial refrigerated display cases and heated display cases. We also have an accredited lab.

must maintain individual measurements +- 4% of rated voltage for DUT average over the test period and +- 2% of the rated voltage
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0 jmurray32168 over 1 year ago in reply to jmurray32168

we use them for product development and certification testing in a laboratory environment and have voltage regulation requirements. We make commercial refrigerated display cases and heated display cases. We also have an accredited lab.

must maintain individual measurements +- 4% of rated voltage for DUT average over the test period and +- 2% of the rated voltage
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0 kmikemoo over 1 year ago in reply to jmurray32168

What you need is a powerline conditioner. They are designed to do what you state and come in all sorts of sizes.
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