目前，我们现有的市电系统存在不稳定因素，为保证计算机和网络系统的供电正常，应使用UPS不间断供电电源。
At present, Urban electricity system exists unstable factor, for guaranteed the normal supply of power for computer and network system, UPS should be used to supply uninterrupted electric power.
铅酸电池是UPS不间断电源系统重要组成部分，电池性能的优劣直接影响整个供电系统的安全性和可靠性。
Lead acid battery is an important part of the Uninterruptable power system UPS, the battery performance effect directly the safety and reliability of the whole power supply system.
文章论述了UPS(不间断电源系统)的原理和性能指标，并从网络设备维护管理工作实践出发，总结了UPS使用的技巧和维护要点。
In this paper, the principle and the performance index of UPS is presented. It also summarizes the skills and maintains of UPS based on the practice of management of network equipments.
此外，在此系统、智能交通系统和安全防护门系统已经不间断电源，确保设备的正常运行。
In addition, the AFC system, intelligent traffic systems and security door systems have uninterrupted power supply to ensure the normal operation of equipment.
所有元器件均来自一个品牌，包括真空断路器，空气断路器，电流接触器，热继电器，驱动，可编程控制器，输入输出模块，电站管理系统继电器和仪表，不间断电源，传感器和照明器材。
All of components come from one brand, from vacuum circuit breakers, air circuit breakers, contactors, thermal relays, drives, PLC, I/O, PMS relays and meters, UPS, sensors and lighting fixtures.
所有元器件均来自一个品牌，包括真空断路器，空气断路器，电流接触器，热继电器，驱动，可编程控制器，输入输出模块，电站管理系统继电器和仪表，不间断电源，传感器和照明器材。
All of components come from one brand, from vacuum circuit breakers, air circuit breakers, contactors, thermal relays, drives, PLC, I/O, PMS relays and meters, UPS, sensors and lighting fixtures.
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