![]() This will assist you in determining how much time you have to safely shut down the attached equipment before emergency backup battery power is depleted on the battery backup UPS. ![]() In basic models, simple LED lights show the amount of battery remaining and the current load level the battery backup UPS is supporting. In most cases, all you will need to know is the current load level and how much backup time is remaining. ![]() Monitoring – Do I Need All These Fancy Lights And Displays? All of our online (double conversion) battery backup UPS models allow you to select and purchase additional external battery packs.Ĥ. You can do this by adding external battery packs to the main battery backup UPS which already has a set number of internal batteries. There are a variety of other factors that impact the backup time like the amp hour rating of each battery, the voltage of each battery, the power factor of the inverter inside the battery backup UPS, etc., but the main thing to do to extend the battery backup time is to add batteries. The main determining factor of battery backup time is the NUMBER OF BATTERIES. Yes, if you use 100 watts instead of 700 watts, the battery(ies) will last longer. In this case, the maximum load of the UPS is 700 watts. This rating is used to determine the maximum load that can be put on a battery backup UPS. Battery Backup Time – How Long Will The Uninterruptible Power Supply (UPS) Run When The Power Goes Out?Ī lot of people are confused by this and think that the capacity rating of the battery backup UPS (for example 1 kVA / 700 Watt) determines the amount of battery backup power time they will have during an outage. R/P = R stands for receptacle and P stands for plug.ģ. In this case the 5 means the outlet is meant for electronics that are powered by three wires (hot, neutral, and ground) that run at 125 volts maximum (110, 115, and 120 volt devices are typical and all use this receptacle/plug).ġ5 = The maximum amperage rating of the breaker typically associated with this outlet/plug. NEMA = National Electrical Manufacturer Associationĥ = The voltage and format rating for this receptacle/plug. If your battery backup UPS says it has NEMA 5-15P (plug) input and NEMA 5-15R (receptacle) output, then you can plug it into a standard wall outlet for power and plug anything that uses a standard wall plug into the back of it for automatic backup power. Anything that has a plug that fits in a standard wall outlet has a NEMA 5-15P (the P means plug). is a NEMA 5-15R (the R means receptacle). There are many of these, so we will cover the one that is used most commonly. It is a standard used to ensure quality, format, and features are consistent between products in electrical distribution, lighting, enclosures, etc. NEMA stands for National Electrical Manufacturer Association. Output – What Are All These NEMA This And NEMA That References? In this case, it would be the 900 watt model.Ģ. Instead, we select the model with the capacity rating over our 432 watt figure. We can't use the 360 watt battery backup UPS to backup this electronic device, because it will most likely overload the 360 watt battery backup UPS. ![]() If we look at the passive backup power systems available, we have a 360 watt battery backup UPS and a 900 watt battery backup UPS which are the 2 models closest to our wattage load. In this case, 360 watts multiplied by 1.20 (360 watts times itself plus 20%) equals 432 watts. Then try to find a battery backup UPS with a capacity rating of at least 20% more than your device's wattage. Capacity – How Much Of A Load Can I Place On A Battery Backup Uninterruptible Power Supply (UPS) Before It Doesn’t Work?įor example, if the device you would like backup power for has a label that says the input power is 120 volts, 3 amps, multiply 120 volts by 3 amps to get the wattage (360 watts). There are many factors to consider when selecting an uninterruptible power supply (UPS). An overview of capacity, output type, run time, and monitoring that can be used with any manufacturer. How to choose an uninterruptible power supply (UPS).
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