The new Xantrex SW3012 claims 10ms switching...

Question

The new Xantrex SW3012 (pure sine wave inverter/charger/power management) claims 10 millisecond switching between shore power, generator and inverter saying "Connected loads are almost unable to feel the power transition". Does this mean the Dish receiver will not reset, for example?

The problem with my Freedom 458 has always been that it did not have the ability to sense shore power. So... if the shore power went kablooie and the inverter drained the batteries sufficiently and the Auto Gen Start started the generator, all of this would be unaffected when the shore power came back on. It did not have the ability to sense the existence of shore power. Apparently, the new SW3012 fixes that.

Now, I'm trying to find out from you electrical gurus if electronics like the Dish receiver, TV, Microwave, etc will notice a 10ms gap or just keep cranking along like nothing happened.

Thanks for the help.

2oldman · Answer

blangen wrote:s if electronics like the Dish receiver, TV, Microwave, etc will notice a 10ms gap or just keep cranking along like nothing happened..You won't even notice the switch with a speed that fast.. provided it really is that fast.  My now-defunct Prosine had a 15ms switch (or so I remember) and it was seamless.  The only issue I ever ran into was when on generator.  If I powered down the Honda (without unpluggig the shore cable) the DVR reset.  If I unplugged the shore cable with the gens running, the DVR was fine.The 3012 is a 12v unit, which is going to require some monster cables if you use it for high-draw appliances for any length of time.  I'm going to 24v which makes cabling 50% easier.  :)

gatorcq · Answer

I installed the Magnum MS2800. I cannot tell when I loose power. I have mine set for 90Vac drop. I disconnect the AC by switching the breaker off, to alow the batteries to discharge / charge to get an accurate SOC.

And yes no lost of setting on any of my electronics.

dale

onaquest · Answer

blangen wrote:The problem with my Freedom 458 has always been that it did not have the ability to sense shore power.  So... if the shore power went kablooie and the inverter drained the batteries sufficiently and the Auto Gen Start started the generator, all of this would be unaffected when the shore power came back on.  It did not have the ability to sense the existence of shore power.  Apparently, the new SW3012 fixes that..The SW3012 will NOT have any effect on this perceived problem.  Once the generator is running, (in your scenario) it will still require you to make a decision to switch back to shore or inverter power.  The S3012 does not have, nor does it add, any circuitry to sense when shore power returns IF the generator is currently running.(In other words, the returning shore power has no way of gaining control of your main transfer switch if the generator is running when power is restored.)  As for the switching time.  It is sufficiently fast to be transparent when it actually switches.

tahiti16 · Answer

The issue with sensing shore power is a function of the transfer switch, which in your case prioritizes the gen feed.

blangen · Answer

tahiti16 wrote:The issue with sensing shore power is a function of the transfer switch, which in your case prioritizes the gen feed.The new SW3012 says it even senses (by computer) loads bigger than what the generator can handle and adds inverter power to subsidize... for a large start up like an A/C compressor, for example.  Surely such an intricate switch would also recognize the returning of shore power and turn off the generator through the Auto Generator Start function/option.  Am I mistaken???

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The new Xantrex SW3012 claims 10ms switching...

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