Bestboy4
Newbie level 1
So I have a board going through UL. UL claims that since it is over 15W that it needs to go through "special" testing. It is based on the 60730-1 standard (annex H.27). Apparently this gives them the license to short or open random components on the board (one at a time) to induce a fault. I have been an engineer for over 10 years and have never heard of such a test for industrial controls.
In my particular case, they removed a resistor in my 5V switcher circuit that sets the output voltage. When this occurs the output goes negative and causes a nice flame out of the my CAN transceiver. :bang:
Has anyone here have any experience with this UL requirement?
In my particular case, they removed a resistor in my 5V switcher circuit that sets the output voltage. When this occurs the output goes negative and causes a nice flame out of the my CAN transceiver. :bang:
Has anyone here have any experience with this UL requirement?