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Old 03-19-2013, 06:07 PM   #11
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I think people are just looking for cost optimized solutions with simplistic features. A manual mode PID and SSR will certainly work to control a boil, but will cost at least twice as much and provides more than they really need. a PWM with an SSR is closer in cost to this thing and gives the same functionality, though.
OK, cheaper and easier, just 2 wires in and 2 wires out.

How about the voltage difference. 220V vs our domestic 240V (nominal). Any documentation that tells us what exact voltage range can be handled?

If this all works I guess one could double-up the current-carrying traces with heavier duty wire.
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Old 03-19-2013, 06:15 PM   #12
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...So the heatsink is just about OK for 10 kW with a 50mm PC fan blowing on it continuously, to keep the triac at 125°C which is probably its rated temperature. So the heatsink is sized adequately do do it's job - it's just going to get very hot doing it.
Here is a note from the ebay ad:
the load cannot exceed the specified maximum power, please pay attention to the temperature at first use. if the temperature too hot exceed 80 °c, please enhance heatsink, or would burn out module and load.

Freely translated, its working temp is 80°C.

It needs a bigger heat sink too as well as a (bigger) fan.
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Old 03-19-2013, 07:04 PM   #13
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The rated temperature of the part that the heatsink is protecting is certainly greater than 80 °C. Whether it is prudent to run it hotter is another question.

With an 80 °C limit this module is good for 5.5 kW with a 50 mm fan, by my calculations above and in the experience of the person who took the photo that I posted.

By the way, an SSR drops the same voltage as a triac so you would need an equivalently large heatsink and fan if you built your own PWM controller, unless I'm missing something.

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Old 03-25-2013, 08:41 PM   #14
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bump

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Old 03-25-2013, 09:59 PM   #15
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Anybody try one yet? I was thinking about using one to control a 5,500w element while i gradually build my control panel.

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Old 05-11-2013, 03:13 AM   #16
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I ordered one on the 2nd so we'll see how it goes

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Old 05-13-2013, 07:14 PM   #17
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I bought one, but decided to throw it away rather than use it.

I know only know enough about electricity to be dangerous and I wasnt confident that I could use it safely, especially after having a few beers.

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Old 05-13-2013, 07:21 PM   #18
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What gave you the impression it wasn't safe?

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Old 05-13-2013, 07:38 PM   #19
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Don't chuck it, see if someone wants it. You might find http://www.jimsbeerkit.co.uk or http://www.thehomebrewforum.co.uk have a few more locals.

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Old 05-13-2013, 08:43 PM   #20
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I just got mine today, right after finishing my PID control box. Looks ok. Hopefully tomorrow i'll get a chance to run the electric for my new setup. I'll throw this controller in a box with a mc switch and see how it works for a boil kettle

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