Isn't this a variation of using the traces as a fusing element instead of using a real fuse? It's been done, there's nothing wrong with it until you start *claiming* the traces as a fusible device. I'm not sure about this, but if you are, don't the traces themselves have to be tested as if they're a fuse?
I've talked with some test engineers at some test houses about this and it can get involved claiming traces as fusible links. To get around this, I had the equip modified to include fuses. Doug At 11:36 PM 1/4/99 +0200, Peter Merguerian wrote: > >Happy New Year to All, > >I would like to ask the opinion of all members regarding compliance >criteria for the Overvoltage Tests in on TNV lines connected to >exposed plant. UL1950 states that after the OV Tests, unit must >comply with the Dielectric Voltage Withstand Tests or Leakage >Current Tests. > >Assuming that after the OV Tests, some internal traces of the >board opened and caused slight charring on the PCB and the unit >passed all applicable Dielectric Voltage Withstand Tests, would >this be considered an acceptable result? > >Looking forward to hearing from all members on this sensitive issue. --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
