Something like a ground fault interrupter but for DC circuits.Or, monitor the current and if it exceeds the 5A level have a switch to cut out the source.
Hi there. So I'm working on a testing fixture for my company and all. It switches 9v5a through 3 different inductors. Step on a foot pedal to let the power flow and all. But I'm trying to pick out a fuse to add to the circuit for an emergency disconnect in case during the test someone accidentally touches the unit being tested. (it shouldn't ever happen, but I'd prefer safer then sorry).So what should I be looking for in a fuse or circuit breaker to trip off in the case that someone gets shocked?
To crossroads. The power itself is controlled by a solid state relay, so it wouldnt be hard to trip that off itself.And to lefty, theres not really much of a circuit. Just the power supply, the relay, and the inductor. then off of the relay theres a foot pedal, the emergency stop switch and an arduino. If the arduino says its OK, and the ESS is not clicked down, then the foot pedal turns the power on and off. If anything says that the circuit is off though, it kills it. but I had been thinkign of throwing a fuse or circuitbreaker into the main loop in between the relay and the source.Other then that theres not much else that can be done. Seeing as before these units were tested by setting up the power supply. Shutting the supply off by hand. Attaching alligator clips to the leads at different points on the inductors, then turning the supply back on. I'm fairly certain I'm already jumping ahead in safety just by putting the relay box in there (also dont have to turn the supply off and on repeatedly, what was taking a bit of time for the tester because theres a lot of walking involved).Now your just gonna go and hook up all the leads with the supply off. Then a multipole switch lets you cycle through the different connection points. Operator stands in 1 spot repeatedly stepping on a pedal rather then running around. Just thought maybe 1 more layer of safety wouldn't hurt.
You say 9V into an inductor... so this is AC (or at least pulsed DC) right?
emergency disconnect in case during the test someone accidentally touches the unit being tested. (it shouldn't ever happen, but I'd prefer safer then sorry).
Well without a schematic drawing I can make no other comments then that exposure to 9 volts is not a shock hazard and rule number one is to first do no harm.Lefty
Retroplayer,Are you claiming that a burn ISN'T a shock hazard? It may not be fatal, but it's still a shock and a hazard. I'm sure your local 'Health and Safety' people would disagree with you.