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Old 03-19-2013, 05:07 PM   #11
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Originally Posted by Walker View Post
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, 05:15 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 125C 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 80C.

It needs a bigger heat sink too as well as a (bigger) fan.


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Old 03-19-2013, 06:04 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, 07:41 PM   #14
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Old 03-25-2013, 08:59 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, 02:13 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, 06:14 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, 06:21 PM   #18
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What gave you the impression it wasn't safe?
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Old 05-13-2013, 06:38 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, 07:43 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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