Factors affecting the price of UPS

Price factor one: the most important factor affecting the life of APC UPS power supply is the ambient temperature. The optimal ambient temperature required by battery manufacturers is between 20-25 ℃. Although the increase of temperature can improve the discharge capacity of the battery, the cost is that the battery life is greatly shortened. According to the measurement, once the ambient temperature exceeds 25 ℃, the battery life will be shortened by half for every 10 ℃ increase. At present, the batteries used in ups are generally maintenance free sealed lead-acid batteries, and the design life is generally 5 years, which can be achieved in the environment required by battery manufacturers. If they fail to meet the specified environmental requirements, their life span will vary greatly. In addition, the increase of the ambient temperature will lead to the increase of the chemical activity inside the battery, which will generate a lot of heat energy. In turn, it will promote the increase of the ambient temperature. This vicious cycle will accelerate the shortening of the battery life.

Price factor 2: regular charging and discharging, floating charging voltage and discharging voltage in APC UPS power supply have been adjusted to the rated value at the time of delivery, while the discharge current increases with the increase of load, so the load should be adjusted reasonably in use, such as the number of electronic devices such as control microcomputer. Generally, the load should not exceed 60% of the rated load of ups. In this range, the discharge current of the battery will not be over discharged. UPS is connected with the city power for a long time. In the environment of high quality power supply and few city power outage, the battery will be in the state of floating charge for a long time, which will reduce the activity of chemical energy and electric energy conversion, accelerate aging and shorten the service life. Therefore, the battery should be fully discharged every 2-3 months, and the discharge time can be determined according to the capacity and load of the battery. After a full load discharge, recharge for more than 8 hours as required.

Price factor three: at present, the vast majority of large and medium-sized APC ups have the operability of communication with microcomputers and program control. Install the corresponding software on the microcomputer, connect the APC UPS through the serial / parallel port, run the program, you can use the microcomputer to communicate with the APC ups. Generally, it has the functions of information inquiry, parameter setting, timing setting, automatic shutdown and alarm. Through information query, the input voltage, output voltage, load utilization rate, battery capacity utilization rate, internal temperature and power frequency of APC UPS can be obtained; through parameter setting, the basic characteristics of APC UPS, battery maintenance time and battery out alarm can be set. Through these intelligent operations, it greatly facilitates the use and management of APC UPS power supply and its battery.