Mark Foster wrote, On 18/02/15 16:11:
Looking for a cost-effective solution to automatically switch a non-redundantly-powered device between redundant power supplies. For example running a single switch between a UPS-backed power supply and a direct-mains power supply, so that I have some tolerance should the mains supply to the UPS fail (or the UPS itself).
Essentially something like this:
http://www.cdlnz.com/index.html?do=viewproduct&p=NR605&code=RP-ATS
But i'm looking for something relatively small and for a relatively low number of devices (say anywhere from 1 to 3). I'm also not necessarily looking for >10A 240V; the gear that'll be being run, is quite low current.
Anyone got any recommendations?
We had one made up for us by Rack Power - was somewhere around $200-$250 from memory a couple years ago. http://www.rackpower.co.nz/10A-IEC-horizontal.html Ours has four output sockets and two input sockets, and a big relay inside. So it draws power from one input but should it fail, then switches to the other input in ~30 ms. That's quick enough for a switchmode power supply to not care. Your other option is an automatic bypass switch for the UPS, if they exist for your model and are not silly money. -- Criggie http://criggie.org.nz/