[chbot] Scrounging for big switch mode PSUs

Henri Shustak henri.shustak at gmail.com
Fri Mar 8 03:12:46 GMT 2019


Were you seeking one or more DC isolating switches?

Just curious as the subject was talking about big switch.


> On 8/03/2019, at 12:44 PM, Mark Atherton <markaren1 at xtra.co.nz> wrote:
> As long as the outputs of the units are floating, then 3 x 48V in series sounds easiest.
> Strongly recommend that you do a 'megger' type test on each unit first though: With the units unpowered, connect together plus and minus outputs, then do 500V insulation test between joined outputs and chassis.
> -Mark
> On 8/03/2019 12:12 PM, Robin Gilks wrote:
>> Hi All
>>> As part of my domestic grid tied battery system I need an isolated DC
>>> power
>>> supply capable of producing 2.5kW at between 120V & 300V  The voltage does
>>> not need to be adjustable.
>>> My plan is to purchase 3 x 1000W 48V caged units and series them to yield
>>> 3kW @ 144V however I thought I'd see what folks have gathering dust before
>>> I place the order. There a many configurations that would do the trick 2
>>> or
>>> 3 x 76V or 96V or even a stack of meaty 24V units.
>>> If you have a suitable combination you would like to dump, sell or swap
>>> for
>>> beer please let me know.
>>>   Peter
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