Why Is The Ups Battery More Expensive Than The Host?

I believe that most customers do not understand Uninterruptible Power Supply(UPS). I also have the most people consulting me about UPS power supplies, mainly about model selection, backup time and capacity calculation. Now most UPS power factor is written as 95%, but in fact there will be some false labels. We will be safe and calculate it at 80%. For example, if the total power of your equipment is 100KVA, the total capacity of UPS = 100/0.8 = 125KVA. However, usually the output end of high-power UPS uninterruptible power supply will be connected to the distribution cabinet to control the power supply, such as lighting, office, monitoring, production and other line groups, and there is also a backup power supply group. In order to meet the plan of adding power equipment in the later stage and avoid the trouble of second-phase line transformation, usually The backup power accounts for 10%-20% of the total power, so it is ideal to choose an uninterruptible power supply with a power of 150KVA. The UPS power supply is also divided into single-phase and three-phase. The single-phase UPS power supply on the market has a power of 0.3KVA-10KVA, which is mainly in the form of standard machine (host plus battery integrated machine). The full load backup time is 10-15 minutes. If you want to extend the backup time, you need to customize the battery cabinet. The three-phase UPS power supply is separated from the host and the battery cabinet. The price we marked is the price of the host. Some customers found that the battery cabinet was several times more expensive than the host when consulting the price, saying that the merchant cheated customers. In fact, the price of the battery cabinet mainly depends on your power and backup time. The longer the backup time, the larger the battery capacity required, and the greater the cost. The following is a relatively simple UPS capacity algorithm. For example, if the total power consumption of your equipment is 100KVA and the backup time is 1 hour, the total capacity of the UPS = 125KVA, then the total energy required is: 125X1HX1000VA=125000VAH. (384V battery, 12V per battery, needs 32 batteries in one group), then the battery capacity is 125000VAH/384V=325AH, then you can choose 32 batteries of 350ah in one group or 32 batteries of 200ah plus 32 batteries of 125ah. 350ah battery costs 1200 yuan, battery cabinet costs 1200 yuan, the whole battery cabinet (including battery) costs 32*1200+1200=39600 yuan, this price is more expensive than the host, not to mention that some need to extend the backup time for more than 2 hours, so when buying UPS power supply, you must pay attention to the backup time, which directly determines your purchase cost, and also depends on the quality and price of the host, and the quality and price of the battery. Some merchants often use inferior batteries to reduce prices, which leads to fire accidents.