Relationship between UPS Capacity Selection and Loads

Li Xianjin（China Southwest Architectural Design and Research Institute CORP. LTD，

Chengdu 610081，China）

        Abstract This article describes the concept of “power factor of load”of UPS，analyzing the influence of power factor of load on UPS output power and describing the selection of UPS capacity which is related not only to load capacity but also to load properties.

Key words　Selection of UPS capacity　Power factor of load　Power conversion

       摘　要　阐述 UPS“负载功率因数”的概念；分析负载功率因数对 UPS 输出功率的影响，UPS 容量的选择不仅与负载的大小有关，还与负载的性质有关；介绍 UPS 容量选择。

       关键词　UPS 容量选择　负载功率因数　功率折算