UPS的主要功能包括()。 <br /> ①市电正常供电时,UPS相当于一台交流稳压器,消除市电上的电涌、瞬间高电压、瞬间低电压、电源噪声和频率偏移等影响;<br /> ②电网异常时,UPS中的逆变器及时将蓄电池内的直流电能转换成交流电能,维持对负载的正常供电;<br /> ③UPS还能起到把负载和市电隔离的功能,这样既可以使负载不干扰电网,又可以使电网中干扰不影响负载;<br /> ④UPS可以保证在满载状态下稳定工作。
A、①②③
B、①②③④
C、①④
D、①②
A、①②③
B、①②③④
C、①④
D、①②
A、Ensure that the power cable for the UPS is plugged in. B、Ensure the battery in the UPS is still good. C、Check the smart cable connecting the UPS to the server. D、Reset the UPS to determine if the problem persists.
A、 Continue plugging into the central UPS, but put the UPS on bypass to avoid load problems. B、 Plug the servers directly into the power that is not on the UPS. C、 Add stand alone UPSs for new servers not wired off the central UPS. D、 Continue plugging into the central UPS because the actual load supported is actually higher than stated.