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Surge Supressor vs UPS
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<blockquote data-quote="TJ Cornish" data-source="post: 66582" data-attributes="member: 162"><p>Re: Surge Supressor vs UPS</p><p></p><p>The standard name for devices where the load runs off the inverter all the time is Double Conversion. Power goes in AC -> DC to charge the batteries, DC -> AC from the batteries (and the charging circuit) to the load. In this method, there is no transfer switch - the load is always powered by the inverter from the DC subsystem.</p><p></p><p>This is surely the safest UPS, though they are less efficient than "line-interactive" units with buck-boost transformers, and always cost a lot more. You may also have difficulty finding a small double-conversion UPS; there are lots of choices from a couple KVA on up. Fewer for little guys.</p></blockquote><p></p>
[QUOTE="TJ Cornish, post: 66582, member: 162"] Re: Surge Supressor vs UPS The standard name for devices where the load runs off the inverter all the time is Double Conversion. Power goes in AC -> DC to charge the batteries, DC -> AC from the batteries (and the charging circuit) to the load. In this method, there is no transfer switch - the load is always powered by the inverter from the DC subsystem. This is surely the safest UPS, though they are less efficient than "line-interactive" units with buck-boost transformers, and always cost a lot more. You may also have difficulty finding a small double-conversion UPS; there are lots of choices from a couple KVA on up. Fewer for little guys. [/QUOTE]
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