Heller 1088 power draw

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The nameplate specs for a 2004 Heller 1088EXL show 240V 60A,... - Mar 24, 2023 by Erik Friesen

We have a HELLER 1700 running at 208v on an 80A breaker. I d... - Mar 24, 2023 by ProcEng1

What is the nameplate rating on that machine? Do you have an... - Mar 27, 2023 by Erik Friesen

Full Load Amp (FLA) ratings on a nameplate indicate that if ... - Mar 27, 2023 by Assured-Tech

> Full Load Amp (FLA) ratings on a nameplate <BR&g... - Mar 27, 2023 by Spoiltforchoice

I'm becoming fairly certain this must be software limited. ... - Mar 27, 2023 by Erik Friesen

For anyone else looking at this, a normal startup runs a bit... - Mar 30, 2023 by Erik Friesen

Erik Friesen

#89124

Heller 1088 power draw | 24 March, 2023

The nameplate specs for a 2004 Heller 1088EXL show 240V 60A, and specify Largest Heater Load of 25A. As each of the 8 heater elements is 6000W or 9.5R, how does this really work? Obviously all 8 elements on would pull 200A, so does the machine only have one element on at a time?

I'm trying to size power since I'm on single phase and have to build up a converter.

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ProcEng1

#89129

Heller 1088 power draw | 24 March, 2023

We have a HELLER 1700 running at 208v on an 80A breaker. I doubt that helps much.

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Erik Friesen

#89137

Heller 1088 power draw | 27 March, 2023

What is the nameplate rating on that machine? Do you have any special zone heating to keep it lower amps?

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Assured-Tech

#89139

Heller 1088 power draw | 27 March, 2023

Full Load Amp (FLA) ratings on a nameplate indicate that if you turned 100% of everything on all at the exact same time with the flip of a switch it would hit this FLA rating. Obviously, this would be bad and is not the reality of what happens. Each heater has a pair of heating elements. Each zone starts heating gradually at X% power until X% of the set point is met and at that point it will start heating the next group of heating zones until all set points are met. I suspect your absolute highest draw is 65A on the high end. Once all of the set points are met your amp draw is probably around 45 Amps. You can monitor this in the PID settings icon. I think you can adjust this in the "Set-up Wizard" but shouldn't if you aren't familiar with it.

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Spoiltforchoice

#89140

Heller 1088 power draw | 27 March, 2023

> Full Load Amp (FLA) ratings on a nameplate
> indicate that if you turned 100% of everything on
> all at the exact same time with the flip of a
> switch it would hit this FLA rating. Obviously,
> this would be bad and is not the reality of what
> happens. Each heater has a pair of heating
> elements. Each zone starts heating gradually at
> X% power until X% of the set point is met and at
> that point it will start heating the next group
> of heating zones until all set points are met. I
> suspect your absolute highest draw is 65A on the
> high end. Once all of the set points are met your
> amp draw is probably around 45 Amps. You can
> monitor this in the PID settings icon. I think
> you can adjust this in the "Set-up
> Wizard" but shouldn't if you aren't familiar
> with it.

Yeah in the wizard (at least recent versions) you can set how many zones warm up together and the threshold. Our 1707 is set to do 4 (2 top 2 bottom at a time with a threshold of 80%, pretty sure these are defaults)

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Erik Friesen

#89142

Heller 1088 power draw | 27 March, 2023

I'm becoming fairly certain this must be software limited. Maybe my math is wrong, but 8 zones * 6000W is 48000W, which would be more like 130A if all were active.

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Erik Friesen

#89151

Heller 1088 power draw | 30 March, 2023

For anyone else looking at this, a normal startup runs a bit over 60A, but editing a running program can push this to 85A or so.

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