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Two different power supplies keep blowing fuses
Hi,
We have 2 x 36V 10Amp power supplies (not at the same time) to run 3 x Nema 23's.
Untill recently they ran without issue, but a couple of days ago when one blew an internal fuse. We replaced, and again within minutes it blew.
We then replaced it with the other power supply, which ran fine for a couple of days and now this one has blown a fuse too.
We opened both of them up, and tested with new fuses and nothing else connected. Both blew, with sparks coming from the same component on both, the rectifier (D10XB60).
Has anyone else had any issues like this before?
Re: Two different power supplies keep blowing fuses
JoeyJoe
Depending on the quality of the power supplies, as to how long they last, with no protection, your back EMF is most likely what is causing the problem
The link below will take care of your problem & protect the power supplies, you have to also make sure, your power supplies are balanced, meaning the output voltages have to be adjusted to be the same
Power Supplies | Protoplant
Re: Two different power supplies keep blowing fuses
did you check the suppy was set correctly for your mains supply ?
not all have a universal mains input (85V to 264V AC) like this one -
http://docs-europe.electrocomponents...6b80ef23db.pdf
one easy way to damage switch mode power supplies
is to connect a 240V AC supply when the input voltage range switch set to 90-132V AC instead of 180-264V !
this will result in the DC voltage of 680V DC instead of the normal 340V DC
John
