“What is the best way to size the APC, esp power rating, for running and protecting PC, Monitor and DSL Modem?”
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There is a loooong theory behind this, but in VERY short words. Backups has 1 clearly stated number which is given in VA (volt ampere) ex 500VA, but computer devices comes with a power measure in Watts. Before continuing VA is NOT the same as Watt. You should find in the backup/UPS user manual to get the real power value in Watts, don't feel sad if you don't find it, sometimes its normal. If you don't find it then assume the worst case multiply the VA measure by 0.6 factor, so in our example 500 VA x 0.6 = 300W, so this UPS can deliver up to 300W at this point all you have to do is go to the back part of your monitor, PC, and modem get the power units in Watts that are always clearly stated then you sum all of them and they should be LOWER than or 300W. Warning: UPSs have 2 types of power connectors 1 type is battery backup and other is surge protection only. All this explanation applies to the battery backup side. Lets say you need to connect a printer that will always go to the surge protection side and NEVER to the battery side.
Sorry, there was a problem. Please try again later.Hey ByEngineer, To properly size the UPS you will need to do the following: 1: ensure that the equipment plugged into the UPS does not exceed the UPS unit’s rated capacity. If the rated capacities of the unit are exceeded, an overload condition may occur and cause the UPS unit to shut down or the circuit breaker to trip. 2. There are many factors that can affect the amount of power that your electronic equipment will require. For optimal system performance keep the load below 80% of the unit’s rated capacity.
Sorry, there was a problem. Please try again later.The box will tell you how long it will last, but the longer the better. If You need to save or get a bit more done then close. You need more time to do this.
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