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Looking at UPS units from APC...

Simple! It has bigger batteries. The size of the batteries is what determines runtime. All the Smart-UPS XL series have the same size batteries, which are the same ones used in the normal Smart-UPS 1500. The inverter in the Smart-UPS XL 750 can only handle 750VA but it is designed to run for a very long time, unlike the normal Smart-UPS 750 which has much smaller batteries and runs for a much shorter time. I believe the 750XL has 2 12V 17AH batteries while the normal 750 has 2 12V 7AH batteries. Also the XL has the connector to add external battery packs for even longer runtime. Because of this the XL probably has a fan to cool the inverter. If you have any other questions just let me know (I know a lot about this subject).
 
Yea, I've got more questions. I was thinking of moving my current apc unit further away from my computer, run a extension cord to where my computer is and have a power strip with another power strip coming out of it for the smaller devices as well but I was wondering if this type of daisy chaining would be such a "good idea" or not.. And eventually I would replace the UPS unit I have from Conext with this: http://apc.com/resource/include/techspe...SUA750XL&fnl=4605,2&fnl_basket=4605,3c
I choose that unit because of an apparent larger battery and the ability to daisy chain more batteries to it in the event I get more money in the future. What do you think of this idea?
 
Well I'm not really sure what to recommend. APC says not to plug extension cords or power strips into their UPS's but does not provide much of a reason why. Usually you would want to be sure you didn't plug a power strip with built in surge protection into a UPS because the stepped wave output of the UPS can cause major problems, however since you're looking at a Smart-UPS (which puts out pure sine wave) this shouldn't be a problem. Personally I have pluged a power strip (one with no surge protection whatsoever, which is surprisingly hard to find) into a UPS without incident. I doubt it would cause a problem but in the event it did, don't expect much help from APC.
 
I would NOT do what you are suggesting.

UPS should only be hooked directly to the wall and other power supply/protection type devices should NOT be ran off of the UPS !!!
 
If you daisy chain two surge protectors, you half the voltage each one sees in case of a surge. Then, they will not trip when they are supposed to. You effectively reduce the sensitivity of them to and protection they offer against surges.
 
Originally posted by: MWink
Well I'm not really sure what to recommend. APC says not to plug extension cords or power strips into their UPS's but does not provide much of a reason why. Usually you would want to be sure you didn't plug a power strip with built in surge protection into a UPS because the stepped wave output of the UPS can cause major problems, however since you're looking at a Smart-UPS (which puts out pure sine wave) this shouldn't be a problem. Personally I have pluged a power strip (one with no surge protection whatsoever, which is surprisingly hard to find) into a UPS without incident. I doubt it would cause a problem but in the event it did, don't expect much help from APC.
Click to expand...
One thing/advantage my current UPS unit from this "conext" is the fact that it provides ports that aren't battery backed up, and two cords that come out of the unit for those devices with the "block" or transformer for small electronics since those take up tons of space and I wouldn't want that to do that to the APC unit. As of this moment, I have a powerstrip coming out of the UPS for smaller electronics like the hub, scanner, paper shredder, laptop; with the larger devices on the unit it's self.

How does the "since wave" thing work? I don't truely understand the difference between the backup-ups and the "smart-UPS" except for the fact the smart ups has more power management features.
 
Originally posted by: wpshooter
I would NOT do what you are suggesting.

UPS should only be hooked directly to the wall and other power supply/protection type devices should NOT be ran off of the UPS !!!
Click to expand...

As of this moment, I have the UPS device hooked up to an extension cord which goes directly into the wall.
 
Not really preferred, but I have been considering doing this myself, since I am out of wall sockets at the locale of my computers. You will probably be O.K. if the extension is kept to a minimum and the rating/gauge of the extension is sufficient.
 
Originally posted by: goku
Originally posted by: MWink
Well I'm not really sure what to recommend. APC says not to plug extension cords or power strips into their UPS's but does not provide much of a reason why. Usually you would want to be sure you didn't plug a power strip with built in surge protection into a UPS because the stepped wave output of the UPS can cause major problems, however since you're looking at a Smart-UPS (which puts out pure sine wave) this shouldn't be a problem. Personally I have pluged a power strip (one with no surge protection whatsoever, which is surprisingly hard to find) into a UPS without incident. I doubt it would cause a problem but in the event it did, don't expect much help from APC.
Click to expand...
One thing/advantage my current UPS unit from this "conext" is the fact that it provides ports that aren't battery backed up, and two cords that come out of the unit for those devices with the "block" or transformer for small electronics since those take up tons of space and I wouldn't want that to do that to the APC unit. As of this moment, I have a powerstrip coming out of the UPS for smaller electronics like the hub, scanner, paper shredder, laptop; with the larger devices on the unit it's self.

How does the "since wave" thing work? I don't truely understand the difference between the backup-ups and the "smart-UPS" except for the fact the smart ups has more power management features.
Click to expand...


I'm not quite sure what you mean by "more power management features." The difference between pure sine wave and simulated sine wave (stepped wave) is the shape of the waveform the UPS puts out when on battery. Normal utility power is supposed to be a sine wave. Many cheap inverters and UPS's put out stepped wave which is not as good and can cause problems with some things (especially motors, surge protectors, etc.) To put it simply pure sine wave will work with anything, simulate sine wave will work with most electronics but some things will not work properly with it.

BTW Conext is a kind of spin off of APC. They sell some of APC's old or low end UPS's.
 
Originally posted by: wpshooter
I would NOT do what you are suggesting.

UPS should only be hooked directly to the wall and other power supply/protection type devices should NOT be ran off of the UPS !!!
Click to expand...


It can be connect via extension cord to the wall. UPS makers say not to becasue they can't ensure that the extension cord is GROUNDED.

So... You may use an extension cord provided you are absolutely sure that it's gounded, and that it's ground is indeed functioning end to end.
 
I have one of those powerstrip shaped UPS units and it has more plugs than my old APC unit. Unfortunately only three of them are actually battery powered (I bought it as a UPS for my networking gear) and that is enough for the essentials but I would have to split for more than modem/router/switch. Splitting using something simple like one of those 1->3 extension cord ends should have no real effect but I reccomend you at least put the heaviest draw on its own socket (the computer itself)
 
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