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fasten 发表于 2017-5-19 08:35  7 ]/ d. Q) `, s, R( S
Scope不能看出来区别？
1 z: r! Y d4 _8 o7 {( _我们的产品是一个3000W 的BBU 跟PSU 连接在一起，当PSU 通电的时候,PSU 给BBU 充电。当PSU 断电的时候，BBU 给PSU 提供DC，最终输出给系统供电。
9 b" Z0 I% e& k+ H' E# A我们纠结到底是用UL1973 还是UL2054 。我觉得是用UL2054 但是客户说要做UL19738 ?+ i8 m1 e- m! B" e
UL1973
$ J* V& a' i5 ?' q1.1 These requirements cover electric energy storage systems as defined by this standard for use as
- |% f: a$ G: Yenergy storage for stationary applications such as for PV, wind turbine storage or for UPS, etc.0 V" D$ t0 C5 i8 p! d
applications. These systems are to be installed in accordance with the National Electric Code, ANSI/NFPA
/ Y; y5 e9 i+ ^+ q; O70 or other applicable installation codes.! @: r7 b' T$ t7 p+ \+ i
1.2 These requirements also cover electric energy storage systems (EESS) as defined by this standard
% `# Y: B* U1 z, W' I( t% Bfor use in light electric rail (LER) applications and stationary rail applications such as rail substations
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UL20546 \ n' a9 ?2 p6 u- K" l% \ z/ a
1.1 These requirements cover portable primary (nonrechargeable) and secondary (rechargeable)
' u; ?6 Z* E( |batteries for use as power sources in products. These batteries consist of either a single electrochemical
3 p" C5 g0 }2 V1 d# w2 }4 \cell or two or more cells connected in series, parallel, or both, that convert chemical energy into electrical, y( e" l- ~' H# u
energy by chemical reaction.
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