Re: Making a small ups last longer

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40883644
Premium
join:2003-06-05
Parker, CO

reply to Equis
Re: Making a small ups last longer

I have seen this posted before and I have read the replies in the past and just shivered

DO NOT DO THIS! PURCHASE A LARGER UPS.

You are risking burning down your business, your home or whatever roof you are putting over this and a good fire Marshall will find the cause and you will then play hell getting an insurance company to ante up.

The AC/DC converter / charger is carefully designed by the manufacturer to handle the load of the batteries that ship OEM. A well designed UPS will see the higher CEMF and refuse to charge a higher load as even the OEM batteries can fail and simulate the same results.

There are UPS devices that will go as high as you need. Pictured is our 9000VA / 6500 watt 240V Power Trust that keeps us up and running long enough to safely shut things down when we have outages or brown outs.

For us this is additional insurance compared to the alternative of burning up motors in compressors and presses during extended brown outs not to mention it is dangerous to have equipment suddenly stop while your operating it.
--
Rich
»www.highgainantennas.com

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· 2006-12-11 02:19:28 ·

public

join:2002-01-19
Santa Clara, CA

·DSL EXTREME

said by 40883644

:

IThe AC/DC converter / charger is carefully designed by the manufacturer to handle the load of the batteries that ship OEM. A well designed UPS will see the higher CEMF and refuse to charge a higher load as even the OEM batteries can fail and simulate the same results.

That is simply nonsense. The charger is current limited because high rate will damage small batteries.
A large battery will charge slowly. For safety each pack should be separately fused.

One concern is the inverter heat sink. It may be too small for extended run time, relying on quick shutdown before the inverter overheats.
A major concern regarding small UPSs is the shoddy design, and even shoddier quality of parts and assembly. Do not rely on small cheap UPS to power a critical device without rebuilding the UPS.

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· 2006-12-11 12:22:28 ·

VariableARK

join:2003-03-17
USA

public what ups do you like to use on your sites? do you strip out less expensive ups for better batteries?

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· 2006-12-11 12:53:24 ·

gpilot

join:2006-04-29
Napa, CA

I've seen small solar units for under 200 bucks as a cheap backup solution (200 or 300 watt) thats enough to power a radio (just).

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· 2006-12-11 12:57:24 ·


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