lem announces sentinel 3+ battery monitoring transducer upgrade for latest ups designs
    萊姆發(fā)布適用于Zui新型ups設計的升級版蓄電池監(jiān)測傳感器sentinel 3+  

    key points:要點：
    ?advanced battery monitoring components track latest changes in ups design practice
      根據(jù)ups設計理念的不斷推陳出新而量身定做的先進蓄電池監(jiān)測元件。
    ?up rated robustness, improved emc performance and enhanced noise shielding maintain measurement performance
    ?更加健壯的魯棒性，電磁兼容性以及在屏蔽噪聲方面的進一步提高保證了傳感器卓越的測量性能。
    ?offered as a portfolio of measurement components, or complete monitoring platform for incorporation in to battery systems
    ?可以只提供測量元件組，也可以提供整個監(jiān)控平臺，用于在蓄電池組中集成。
    ?dedicated and hardened bus communicates comprehensive data to supervisory systems
    ?加強的專用總線將測量數(shù)據(jù)傳送到監(jiān)控系統(tǒng)。

    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.
    萊姆宣布推出sentinel 3+，這是一款經(jīng)過驗證的新一代sentinel 產(chǎn)品，可對不間斷電源(ups) 系統(tǒng)中的后備電池健康狀態(tài)進行連續(xù)監(jiān)測。sentinel 3+的性能提升使其與Zui新型的ups 設計體系能夠完全融合，順應了ups 設計的發(fā)展趨勢（比如無變壓器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+ 是一款蓄電池監(jiān)測傳感器，適用于對數(shù)據(jù)中心和醫(yī)院等用戶從各種規(guī)格的ups到兆瓦級備用電源的蓄電池的電壓、溫度和阻抗進行測量。sentinel 3+ 通過專用通訊總線將對vrla（閥控鉛酸蓄電池）、膠體電池或富液固定電池組的測量結果上報給監(jiān)控系統(tǒng)，從而可以了解ups電池組在其使用過程中的真實健康狀態(tài)。sentinel 3+可以確保電池組能夠提供所需輸出，同時在不斷開電池組的情況下可在線識別出失效電池。

    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的設計者研發(fā)了一些新技術，例如采用快速igbt（絕緣柵雙極晶體管）來淘汰掉體積龐大且造價昂貴的變壓器以降低成本。這種情況下，電池組以浮充模式運行時將受到更高紋波電流的影響，因此監(jiān)測電路必須能應對重疊高幅，快速瞬變的高共模電壓的影響。  

    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. 
    萊姆的sentinel 3+ 蓄電池傳感器的特點是根據(jù)這一更具挑戰(zhàn)性的測量環(huán)境更新了內(nèi)部算法，同時保持了sentinel 系列產(chǎn)品的一貫精度，同時提高了電磁兼容能力，增強了整體的魯棒性。sentinel 3+ 測量電壓范圍為0.9-16v，測量精度為+/-0.5%；測量阻抗范圍為0.05-250 mω，測量重復度為+/-2%。在+/-600v，20 khz重復率共模電壓下，sentinel 3+ 具有高達20 kv/μsec 的共模瞬態(tài)抗擾度。