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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 
' [* A7 ]% r0 {3 sScope不能看出来区别？
: `4 o& o1 Z9 [; f. _8 v% V7 }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。
6 _3 G% ^9 m9 Y5 J& G( n5 F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UL19732 B2 Y% Y+ c3 s+ m# R
UL1973
8 u; X2 r# |! ]/ k! N6 U1.1 These requirements cover electric energy storage systems as defined by this standard for use as8 l( }4 e9 l' u1 a
energy storage for stationary applications such as for PV, wind turbine storage or for UPS, etc.
3 k% T: x) v& kapplications. These systems are to be installed in accordance with the National Electric Code, ANSI/NFPA- I0 o" ]( B/ V
70 or other applicable installation codes.
% j y2 j# ]! k0 P+ M1.2 These requirements also cover electric energy storage systems (EESS) as defined by this standard) ]% c \! i- h% I2 o4 B4 u) C
for use in light electric rail (LER) applications and stationary rail applications such as rail substations# m, u, _2 Z8 q; u# ~/ m
2 c7 Q+ I" H& _6 L2 Z0 m' |, n
UL20542 ^2 |" x8 n( S' W- h7 B6 O
1.1 These requirements cover portable primary (nonrechargeable) and secondary (rechargeable)& Z. U1 E0 \' k
batteries for use as power sources in products. These batteries consist of either a single electrochemical2 m( N. B% _* d! R3 ^
cell or two or more cells connected in series, parallel, or both, that convert chemical energy into electrical7 J% R, l2 s& b P F: B% Q0 i/ `
energy by chemical reaction." s+ s# O6 r2 q# P* r4 L! k' D$ K7 Z4 d
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