What should be paid attention to when using UPS power supply in high altitude areas?

Time of issue:2022-09-29


The altitude affects the reliable operation of the UPS power supply. With the increase of the altitude, the high altitude and high cold bring challenges to the use and maintenance of the UPS.


Altitude affects the reliable operation of UPS power supply. With the increase of altitude, high altitude and high cold bring challenges to the use and maintenance of UPS. The insulation performance of the UPS deteriorates, and the cooling effect of air cooling becomes worse. What are the effects of using UPS in high altitude areas? In this article, the editor of Cunneng Electric will talk to you.


What should be paid attention to when using UPS power supply in high altitude areas?


Generally, in the working environment of UPS power supply parameters, there will be a description about the altitude: "altitude < 1000m (power decreases by 1% for every 100m increase) up to 4000m". Why does altitude change affect UPS power performance?


When using UPS in high-altitude areas, we must consider the problem of equipment derating. During the operation of electronic equipment, the temperature maintenance of UPS power equipment is an important factor related to smooth operation. After the altitude exceeds 1000 meters, the impact on the UPS has three aspects:


1. The low voltage decreases and the capacitor is slightly deformed, resulting in a change in capacity and affecting the output power of the UPS;


2. The altitude is too high, the air density decreases, the same fan speed, but the ventilation volume is insufficient, resulting in insufficient heat dissipation capacity. At this time, if the load is fully loaded, thermal overload will occur, and the power device will stop running due to excessive heat, affecting the load. Protect.


3. Due to the low absolute humidity, large temperature difference and strong solar radiation in high altitude areas, the aging of UPS equipment materials will be accelerated, thereby affecting the performance of electrical equipment.


As the altitude of UPS power increases in plateau areas, the power and backup time of UPS will decrease. When we use UPS power supply in plateau areas, we should pay attention to the choice of brand when choosing UPS power supply. Some uninterruptible power supplies do not support the use of plateau areas.


Electronic components are affected by high altitude factors, and the technical characteristics of derating are generally present. We don't need to consider this issue in the range of less than 1000 meters above sea level, and we should consider 10% derating of the equipment every time it exceeds 1000 meters.


All electrical and electronic equipment is matched according to about 80% of the operating power consumption when the equipment is running. Therefore, in the early stage of equipment selection, we should reasonably calculate the actual power consumption of the equipment and match the corresponding energy storage lithium Battery UPS power supply model.


The altitude varies greatly. In the selection and use of UPS power supply, the altitude factor should be fully considered. When applying to high-altitude areas, the following considerations should be made:


Select or customize UPS power products with larger safety clearances to avoid ignition failures inside the circuit.


Under the ambient conditions above the normal use altitude, the UPS should be derated to prevent the UPS from overheating protection.


To sum up, the altitude does have an impact on the use of UPS equipment. If you have a project that needs to use UPS power in high-altitude areas, you must consider whether the brand you choose can meet the requirements for use.