I have a design which needs to meet IEC 60079-11 instrinsic safety. Does anyone have experience calculating the inductance of ferrite beads specifically for IS? I have been told that the inductance needs to be calculated at 1KHz for IS, however, the datasheet for the ferrite bead we are using...
I am using an IDC type ribbon cable connector (TE 2-746610-4)in a fairly dusty/dirty environment. We have been conformal coating the connector, including top holes, on the assembly after the cable is crimped in of course. Our manufacturer is now saying that it could be an issue if the coating...
Greetings,
I am wondering what exactly happens in an IGBT driven VFD drive when it trips due to overvoltage. I presume that in all cases there is voltage detection on the DC bus. Once it goes above a certain threshold, the drive "trips". What exactly does the drive do to protect from the...
