Calculation method of UPS power supply capacity in monitoring installation

How to determine what type of UPS power supply you need? Generally, personal office and home users can consider backup models, such as Santak backup UPS power supply, which is inexpensive and lightweight, and is an ideal partner for personal computers. It has a high cost-effectiveness; for network users, servers or precision instruments of small and medium-sized systems, online or online interactive UPS power supplies are often used, which can better resist various damages from the power grid. They have complete functions and most of them have intelligent monitoring and network connection functions to achieve remote control and intelligent management. For large and important equipment and systems, high-power Santak online UPS power supply is essential to provide stable power protection. How to determine the required power (VA)? You need to list all the equipment that needs to be protected, not forgetting the display, terminal, and external hard disk. The voltage and current data of each device can be found on the back panel, and the VA value can be obtained by multiplying the two. Some equipment uses watts to indicate the power requirement. See the wattage multiplied by 1.4 to get the approximate VA value. For the power of the entire equipment, its rated number is used as the basis. Sum up the VA values ​​of all equipment, and add 30% of the expansion capacity to the summed value for system upgrades.

How to configure the backup delay time? Due to the differences in systems and equipment, the selected UPS power supply models and configurations are also different. The standard UPS power supply itself has a UPS battery inside, which can generally continue to supply power for several minutes to dozens of minutes after a power outage; while the long-term UPS power supply is equipped with an external battery pack, which can meet the user's need to continue to supply power during a long power outage, and the backup time can be designed to be several minutes to more than ten hours or longer. Generally, the backup time of a long-term UPS power supply is mainly limited by factors such as the cost of the UPS battery, the size of the installation space, and the battery recharge time. Generally, in areas with poor power environment and frequent power outages, UPS power supply and generator power supply are used. When a power outage occurs, the UPS power supply is first powered by the battery for a period of time. If the power outage is long, the backup generator can be started to continue to power the UPS power supply, and then switch to the mains power supply when the mains power is restored. The battery power supply time is mainly affected by factors such as load size, battery capacity, ambient temperature, and battery discharge cut-off voltage. According to the delay capacity, determine the capacity of the required battery, expressed in ampere-hours AH value, and calculated by the number of hours of discharge time at a given current ampere. Generally, UPS configuration is calculated by the following formula: UPS power (VA) × delay time (hours) ÷ UPS power startup DC = required battery ampere-hours (AH). Taking the 4-hour delay of Santak C3KS as an example, let's calculate: (Note: the starting DC of Santak C3KS is: 96V) 3000 VA × 4 hours ÷ 96V = 125AH. The result is that a 125AH battery is needed to meet the 4-hour power supply, but ordinary UPS batteries generally do not have a group of 8 with a capacity of 125AH (because the starting DC of C3KS is 96V-(the standard DC voltage of UPS when leaving the factory), and most general batteries are 12V DC, 96V (UPS starting DC voltage) ÷ 12V (battery DC voltage) = 8. So 8 batteries are used as a group) UPS batteries.

We can choose a set of 100AH ​​batteries to configure it; the delay time is: 100AH ​​(UPS battery capacity) × 96V (UPS start DC) ÷ 3000V (UPS power) = 3.2 hours. We can also choose 2 sets (16) of 65AH UPS batteries in parallel for configuration! The delay time is: 65AH × 2 × 96V ÷ 3000VA = 4.16 hours. The standard starting DC voltage of the American Santak UPS power supply at the factory: MT1000SC1KS C2KS-C3KS C6KS-3C20KS 3C3-10KS--3C340KS 24VA 36V 96V 240V 384V The voltage output power factor of the American Santak UPS power supply is 0.7; for example, the maximum supported load power of Santak C1KS is: 1000V×0.7=700W, so the maximum supported load of Santak C1K is 700W, and so on!! (Note: In general, in order to better use the UPS power supply, it is recommended that the UPS power supply should not be used without load/full load or overload. The best load power of the UPS power supply is about 70%-80% of its standard load. For example, the best load of C1K is 500-600 (w) load! This can better play the advantages of the UPS power supply itself and extend the service life of the UPS power supply!