If you are using mean well supplies test them carefully to see how they behave in a inrush or short circuit event. The SD series, on over current, lock out until the input power is removed for ~10 seconds. This can be a real problem if the inrush current of your load is sufficient to trip them into lockout. Sometimes hard to see when you are starting up a site or a site has equipment added to it after it’s been in operation for a while. Power goes out, comes back on and the power supply locks out due to inrush current. Very annoying.
The RSD series does not have this issue. In any case - test your designs carefully. Mark > On Mar 26, 2017, at 9:07 PM, Bill Prince <[email protected]> wrote: > > Check the specs on the Meanwell. Most good power supplies do have current > limiting built in. Most of them you can short the output and they will limit > to whatever the current limit is. > > bp > <part15sbs{at}gmail{dot}com> > > On 3/26/2017 4:57 PM, Adam Moffett wrote: >> I just replaced a Meanwell SDR-240-48 today. I have no reason to think >> there was a surge, but it made me think of the thread about the Netonix POE >> and surge suppressors. If a DC surge protector clamps, am I shorting my DC >> power supply? What's likely to happen? >> >> This unit is supposed to have protection for over voltage and overload >> conditions. It doesn't specifically say anything about short circuit....but >> I assume a short leads (rapidly) to an overload so maybe it would be ok? >> >> > >
