What's left of Our Progressive EMS Unit
This is whats our EMS unit looks like after our last excursion. The box got fried. Bought it in 2009 and it has worked flawlessly up until a couple of weeks ago. No I don't know what or how, but it s...
Forum Discussion
Just a note. Every device has a sensitive spot. A point meaning place that is most likely to "overheat". With my power supplies, it is the largest of the chokes.
Perhaps a year ago I posted a thread about thermal protective devices
(German manufactured) that chop up to 30 amperes of AC current. All of my Megawatts will chop incoming power to the circuit if temperature exceeds 170F. The cycle life of the devices is 30,000+ at 15-amps which is far higher than what the power supply would ever use.
I use this protection in series with the integral 10-ampere circuit board fuse. Atop the tallest choke it is within 1/4" of the roof of the device and therefore most vulnerable to high interior device temperature. I do not want interior temperature of my system to exceed 170F. Period. I am not helpless to operating contingencies. If the POWER device ever exceeded that temp I would increase it's ventilation. This I did with the first Hyperwatt unit.
The power supplies have aluminum housings. But what I fear is a fire that would cause the circuit board and bottom plastic insulation plate to smolder or smoke. The issue is toxic fumes.
There is no way in hell I would ever enclose a POWER control circuit inside a plastic case, and then jeopardize the air inside a habitable air space or risk ignition of adjoining structural material.
These are just my thoughts which I have been harboring all along regarding this issue.
Yes I am old-fashioned. Yes I am an utter "chicken" when it comes to safety issues.
Perhaps a year ago I posted a thread about thermal protective devices
(German manufactured) that chop up to 30 amperes of AC current. All of my Megawatts will chop incoming power to the circuit if temperature exceeds 170F. The cycle life of the devices is 30,000+ at 15-amps which is far higher than what the power supply would ever use.
I use this protection in series with the integral 10-ampere circuit board fuse. Atop the tallest choke it is within 1/4" of the roof of the device and therefore most vulnerable to high interior device temperature. I do not want interior temperature of my system to exceed 170F. Period. I am not helpless to operating contingencies. If the POWER device ever exceeded that temp I would increase it's ventilation. This I did with the first Hyperwatt unit.
The power supplies have aluminum housings. But what I fear is a fire that would cause the circuit board and bottom plastic insulation plate to smolder or smoke. The issue is toxic fumes.
There is no way in hell I would ever enclose a POWER control circuit inside a plastic case, and then jeopardize the air inside a habitable air space or risk ignition of adjoining structural material.
These are just my thoughts which I have been harboring all along regarding this issue.
Yes I am old-fashioned. Yes I am an utter "chicken" when it comes to safety issues.
