科士达工频机UPS电源：缺点是输入功率因数低，功耗大，效率低，体积大，笨重，价格高，可靠性低;优点是制造相对容易，尤其是采用手工作业影响也不大，要求一致性相对低一些。

UPS power supply: disadvantages are low input power factor, high power consumption, low efficiency, large volume, bulky, high price, low reliability;The advantage is that manufacturing is relatively easy, especially the use of manual work has little impact, relatively low requirements for consistency.

　　科士达高频机UPS电源：优点是输入功率因数高，功耗小，效率高，体积小，轻便，可靠性高;但对生产手段要求高，要求一致性严格。