lem announces sentinel 3+ battery monitoring transducer upgrade for latest ups designs
莱姆发布适用于最新型ups设计的升级版蓄电池监测传感器sentinel 3+
key points:要点：
•advanced battery monitoring components track latest changes in ups design practice
根据ups设计理念的不断推陈出新而量身定做的先进蓄电池监测元件。
•up rated robustness, improved emc performance and enhanced noise shielding maintain measurement performance
•更加健壮的鲁棒性，电磁兼容性以及在屏蔽噪声方面的进一步提高保证了传感器卓越的测量性能。
•offered as a portfolio of measurement components, or complete monitoring platform for incorporation in to battery systems
•可以只提供测量元件组，也可以提供整个监控平台，用于在蓄电池组中集成。
•dedicated and hardened bus communicates comprehensive data to supervisory systems
•加强的专用总线将测量数据传送到监控系统。
lem has announced the introduction of sentinel 3+, the latest generation of the proven sentinel product that continuously monitors the state of health of batteries in uninterruptible power supply (ups) systems. the enhancements incorporated in sentinel 3+ enable it to be fully integrated into the newest architectures of ups, accommodating ups design evolutions such as transformerless circuit topologies.
莱姆宣布推出sentinel 3+，这是一款经过验证的新一代sentinel 产品，可对不间断电源(ups) 系统中的后备电池健康状态进行连续监测。sentinel 3+的性能提升使其与最新型的ups 设计体系能够完全融合，顺应了ups 设计的发展趋势（比如无变压器ups）。
sentinel 3+ is a battery-monitoring transducer that makes measurements of voltage, temperature and impedance, of cells and complete batteries, in ups installations of all sizes up to mega-watt back-up power supplies for data centres and hospitals. sentinel 3+ reports its measurements – on vrla (valve-regulated lead-acid), gel or flooded stationary batteries – to supervisory systems over a dedicated communications bus, and offers a unique capability to assess the true state-of-health of ups batteries while they are in service.
sentinel 3+ gives complete confidence that battery arrays will deliver their rated power when called on to do so, and identifies weak and failing cells without the need to remove them from service for cycling tests.
sentinel 3+ 是一款蓄电池监测传感器，适用于对数据中心和医院等用户从各种规格的ups到兆瓦级备用电源的蓄电池的电压、温度和阻抗进行测量。sentinel 3+ 通过专用通讯总线将对vrla（阀控铅酸蓄电池）、胶体电池或富液固定电池组的测量结果上报给监控系统，从而可以了解ups电池组在其使用过程中的真实健康状态。sentinel 3+可以确保电池组能够提供所需输出，同时在不断开电池组的情况下可在线识别出失效电池。
designers of the latest ups systems have exploited technology developments such as the availability of fast igbts (insulated-gate bipolar transistors) to reduce costs by eliminating bulky and expensive transformers from their circuit configurations. the battery packs that the sentinel product monitors are, in consequence, operated in a floating voltage mode: the battery is subjected to higher ripple currents, and the monitoring circuitry must handle high common-mode voltages, with superimposed high-amplitude, fast transients.
新型ups的设计者研发了一些新技术，例如采用快速igbt（绝缘栅双极晶体管）来淘汰掉体积庞大且造价昂贵的变压器以降低成本。这种情况下，电池组以浮充模式运行时将受到更高纹波电流的影响，因此监测电路必须能应对重叠高幅，快速瞬变的高共模电压的影响。
lem's sentinel 3+ features upgraded algorithms to take account of this more challenging measurement environment, maintaining the well-proven accuracy of the sentinel product family, as well as improved emc immunity and enhanced overall robustness. sentinel 3+ delivers voltage measurements over a range of 0.9 to 16v with an accuracy of +/-0.5%; impedance measurement from 0.05 to 250 mω with repeatability of +/-2%. sentinel 3+ features common mode transient immunity up to 20 kv/µsec with a common-mode voltage level of +/-600v, and a transient repetition rate of 20 khz.
莱姆的sentinel 3+ 蓄电池传感器的特点是根据这一更具挑战性的测量环境更新了内部算法，同时保持了sentinel 系列产品的一贯精度，同时提高了电磁兼容能力，增强了整体的鲁棒性。sentinel 3+ 测量电压范围为0.9-16v，测量精度为+/-0.5%；测量阻抗范围为0.05-250 mω，测量重复度为+/-2%。在+/-600v，20 khz重复率共模电压下，sentinel 3+ 具有高达20 kv/µsec 的共模瞬态抗扰度。