Recommendations for a REAL UPS
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When I worked as a network tech many years ago, I always went with Eaton. Extraordinarily reliable, but not cheap. Backup Power UPS[^] If you want it to run from the inverter continuously you need to check "Online" in the Topology filter. (You probably need to go to the 9-series for that)
Wrong is evil and must be defeated. - Jeff Ello
Ugh, their site is full of popups and accept cookies. None-the-less, looks like a great source, but I notice the don't make pricing obvious. :laugh:
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When I worked as a network tech many years ago, I always went with Eaton. Extraordinarily reliable, but not cheap. Backup Power UPS[^] If you want it to run from the inverter continuously you need to check "Online" in the Topology filter. (You probably need to go to the 9-series for that)
Wrong is evil and must be defeated. - Jeff Ello
Plus one for Eaton, moved to them from APC and never regretted it. When it comes round to the time to change batteries, go for the best, Panasonic or Yaesu for example. Cheaper or rebadged ones tend not to enjoy the warm environment inside a UPS and can last only a year.
So old that I did my first coding in octal via switches on a DEC PDP 8
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Ugh, their site is full of popups and accept cookies. None-the-less, looks like a great source, but I notice the don't make pricing obvious. :laugh:
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DivWindow: Size, drag, minimize, and maximize floating windows with layout persistenceWell, if your "specification" in your OP stands it will dig a serious hole in your wallet. You get list prices and runtime graphs on this page[^]. I would have probably recommended a 9SX1000 with one or two extra battery modules on that spec. (Sine output and Generator compatible) But not without making a "cost benefit analysis" beforehand. Also note that the prices at Newegg are 35-ish percent lower.
Wrong is evil and must be defeated. - Jeff Ello
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Not one that switches to battery with a click that causes some equipment to instantaneously power off. Something that runs off of the battery with a power inverter and the battery is kept topped up with the charging system. And something that can provide about 1000 watt hours of battery power, so if I draw 300 watts, it'll stay alive for 3 hours or so. Any recommendations?
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DivWindow: Size, drag, minimize, and maximize floating windows with layout persistenceI know the title says UPS but if you are intending to power a DC charge like a computer, it might be cheaper, for your given specifications, to replace the AC-DC PSU by a DC-DC one, hook that to a battery, or a pack, and hook those to a battery charger capable of charging the batteries and powering the DC charge at the same time. This will insulate your charge from any power line misbehaviors. This setup is basically a more efficient Online UPS (I think that is how it is called) because you remove losses from converting AC to DC back to AC in the UPS and then back to DC in your charge, which also extends runtime from the battery. I do not know how the technology is today for this kind of setup but, some fifteen years ago, we did this in a lab to protect a 100000€ FPGA board from current spikes and over-voltages that were common in the aging building we were in. Best of luck
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Marc Clifton wrote:
Something that runs off of the battery with a power inverter and the battery is kept topped up with the charging system.
That seems tough to implement, charging a battery while it's sourcing power to a load. Seems like primary source of power would need to be switched, otherwise the battery charging circuit would be driving the load.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment "Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst "I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
jeron1 wrote:
Marc Clifton wrote:
Something that runs off of the battery with a power inverter and the battery is kept topped up with the charging system.
That seems tough to implement, charging a battery while it's sourcing power to a load. Seems like primary source of power would need to be switched, otherwise the battery charging circuit would be driving the load.
Online/double conversion UPSes do just that. They start at a few hundred dollars for the same range of capacities that would be $50-150 in more affordable consumer models. I don't know if the hardware required actually costs that much more or it's mostly high margins on the enterprise product.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, weighing all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius
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Not one that switches to battery with a click that causes some equipment to instantaneously power off. Something that runs off of the battery with a power inverter and the battery is kept topped up with the charging system. And something that can provide about 1000 watt hours of battery power, so if I draw 300 watts, it'll stay alive for 3 hours or so. Any recommendations?
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DivWindow: Size, drag, minimize, and maximize floating windows with layout persistenceI used a TrippLite UPS a few years ago. Online and true sine wave. It could back up two Windows servers for about 4 hours. I can't remember the model but it wasn't cheap.
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Not one that switches to battery with a click that causes some equipment to instantaneously power off. Something that runs off of the battery with a power inverter and the battery is kept topped up with the charging system. And something that can provide about 1000 watt hours of battery power, so if I draw 300 watts, it'll stay alive for 3 hours or so. Any recommendations?
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DivWindow: Size, drag, minimize, and maximize floating windows with layout persistenceI’ve run APC UPSs for over 25 years - both workstation and server-rack models. I suppose there are better ones out there, but as long as APC works for me, I have no reason to try anything else. I run a 1500 at home, which is many times greater than needed, but I’m comfortable with that size. I understand the difference between sine and square waves, but frankly don’t really care as long as the equipment doesn’t cycle or shut down. I guess for some scientific equipment it may make a difference. You should be sure the UPS can issue a safe shutdown command to the connected computer so as not to surprise the system.
Time is the differentiation of eternity devised by man to measure the passage of human events. - Manly P. Hall Mark Just another cog in the wheel
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Not one that switches to battery with a click that causes some equipment to instantaneously power off. Something that runs off of the battery with a power inverter and the battery is kept topped up with the charging system. And something that can provide about 1000 watt hours of battery power, so if I draw 300 watts, it'll stay alive for 3 hours or so. Any recommendations?
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DivWindow: Size, drag, minimize, and maximize floating windows with layout persistenceI believe the phrase you are looking for is Make before Break. Effectively the unit has a few seconds of power (like a capacitor), that keeps the circuit going as it switches. We had a unit installed like this for these very reasons. It was QUITE expensive, but it worked. It ran our servers, phone systems, etc.
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jeron1 wrote:
Marc Clifton wrote:
Something that runs off of the battery with a power inverter and the battery is kept topped up with the charging system.
That seems tough to implement, charging a battery while it's sourcing power to a load. Seems like primary source of power would need to be switched, otherwise the battery charging circuit would be driving the load.
Online/double conversion UPSes do just that. They start at a few hundred dollars for the same range of capacities that would be $50-150 in more affordable consumer models. I don't know if the hardware required actually costs that much more or it's mostly high margins on the enterprise product.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, weighing all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius
That's pretty neat, I'll have to read up on them, thanks. :)
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment "Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst "I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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I believe the phrase you are looking for is Make before Break. Effectively the unit has a few seconds of power (like a capacitor), that keeps the circuit going as it switches. We had a unit installed like this for these very reasons. It was QUITE expensive, but it worked. It ran our servers, phone systems, etc.
that's a new term, I always knew those as "Off-line" ie. they don't draw direct power from the utilities as they are allways "off-line" drawing from the batteries being charged at the same time... but yeah, those are the real expensive ones, especially as you need them to be true pure-sinewaves