) r; h3 B: F3 F( p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。 ( [. d9 g9 L( @! z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 @5 r3 r' N4 a$ d B1 ~+ |6 P
UL1973) C9 F; d2 g8 I& p; c( p0 O
1.1 These requirements cover electric energy storage systems as defined by this standard for use as 4 A" T6 Q( c$ X% H" Oenergy storage for stationary applications such as for PV, wind turbine storage or for UPS, etc. 7 T9 Q( ^1 b3 q9 {applications. These systems are to be installed in accordance with the National Electric Code, ANSI/NFPA d& n: y2 A( k! \70 or other applicable installation codes. 9 B1 @; D2 A. n' h1.2 These requirements also cover electric energy storage systems (EESS) as defined by this standard , T" w* R. C! B: {for use in light electric rail (LER) applications and stationary rail applications such as rail substations ; }" R) U+ l' p( N & t+ |) G0 C5 p" d0 X9 X# _* M% vUL2054: @, T' ]) k( a5 V- G% ]' n
1.1 These requirements cover portable primary (nonrechargeable) and secondary (rechargeable) ( ?7 o. G4 r+ n. v8 x6 E! Gbatteries for use as power sources in products. These batteries consist of either a single electrochemical ! }1 K+ O+ {; P9 u; S+ Dcell or two or more cells connected in series, parallel, or both, that convert chemical energy into electrical - Y. r' j( R# G" M* W! f0 O3 N2 m# Yenergy by chemical reaction.0 U( r6 [ \3 I" ~+ G
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