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Eaton is probably just another step... As management/shareholdersare more interested in the money, since Exide days, rather than inthe product, the usual pattern of buying/selling will continue. Deltec had one marvelous product line, both electronically andmanagement SW wise (when APC still struggled to define their UPSproduct line) - at least the current line of Eaton low power UPSproducts, based mostly on it, managed to keep most of theirqualities. Schneider bought Merlin Gerin (late '80s) and APC, a few years ago,but kept just the high power end of MGE (EU antitrust), the lowpower one ended at Eaton, and will probably be mostly discarded, asusual. Lets hope Eaton will keep Exide/Powerware's policies of, at least,offering technical information and SW for former product lines ofthe companies they bought, even without active support. Also, MGE had a tradition of supporting FOSS, unlike APC. I guess the Schneider rep is even more frustrated... @joelja "They are substantially resistant to thermal runnaway" Actually they are not, and have a quite large negative thermalcoefficient (~ -3.9mV/C/cell), which, when neglected, can lead toshortened life, or even failure. Also, high and low temperatureshave a detrimental effect on life time. APC was quite infamous for not using thermal compensation in theirSmart interactive series, leading to premature battery failure -don't know if they fixed it in newer units, but they have abusiness in selling replacement packs.. @joebob2000 -48V DC bus is established in the telecom industry, butis inefficient for high power systems, implying a lot more copperat the same power levels, than higher voltage AC (the oldEdison/Tesla currents war). Most UPSs over 1000VA use internally96V or even 192V DC, for higher efficiency. Also, to charge the batteries you need a rectifier, not inverter. As the transition from circuit-switched to packet-switched networksadvances, this legacy of early telecom days will probably fadeaway. As a footnote, the THG dynamic duo should be kept away from allelectrical energy matters, they still don't grasp it. "In addition to lithium-ion technology, they are safe, as theycannot catch fire." H2-02 gas mix in a closed recipient is not exactly "safe"... "The 3,000 VA unit provides a 12V, 9 Ah battery unit." That would be rather 6 12V units (or a 72V one). A worrying trend is emerging, newer units feature just limitedinternal capacity (~3 min at full load), leading to almostmandatory purchase of at least one EBM. "The PW5130 is a true behemoth, weighing in at 34 kg" It could be considered quite light, the Compaq R3000 (PW5119)clocked at 60kg, but it had a lot more storage capacity and wasextremely sturdy. Still have a few ones working after a decade... "LanSafe seems to be the original Powerware product, while thePW5130 is based on MGE OPS technology." oops, actually both are... (cleared that up in the previouscomment). We are high quality suppliers, our products such as Framed Glass Shower Manufacturer , Resin Bathtub Manufacturer for oversee buyer. To know more, please visits Glazed Wall Tile.
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