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发表于 2017-5-19 10:21
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fasten 发表于 2017-5-19 08:35  # B6 C- ?2 t) j
Scope不能看出来区别？
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。
8 I1 \; R4 V, n& N( v% r; m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UL1973
4 \ p2 }* J3 j) LUL1973# m8 _. E6 A4 p
1.1 These requirements cover electric energy storage systems as defined by this standard for use as
/ y+ K1 s9 P$ c# Ienergy storage for stationary applications such as for PV, wind turbine storage or for UPS, etc.
# W8 F: ^. @/ M+ |, y" u5 y" Q8 Qapplications. These systems are to be installed in accordance with the National Electric Code, ANSI/NFPA$ R! J: b+ Z9 a. b! t
70 or other applicable installation codes.+ \# w7 u. h* e/ g. u/ Y5 y( U
1.2 These requirements also cover electric energy storage systems (EESS) as defined by this standard
+ E; d" z$ J% q# L% \- ~2 Qfor use in light electric rail (LER) applications and stationary rail applications such as rail substations
# p- V/ z) k/ _$ P& g* F$ U4 {( [4 ?2 K. B% C1 V
UL20541 I% I- L; d( g5 n/ Z1 Q6 }
1.1 These requirements cover portable primary (nonrechargeable) and secondary (rechargeable)
2 V1 N/ \+ E& g1 `, N( n: `batteries for use as power sources in products. These batteries consist of either a single electrochemical' f/ b- Y) s# b1 f' [
cell or two or more cells connected in series, parallel, or both, that convert chemical energy into electrical
+ E5 h% \& A* M* [energy by chemical reaction.( |- l f" F P8 L C
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