标准60950里的2.7章的内容

June.Zhao

广东安规检测
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  初级电路是否需要过流保护呢？
标准里写到：To protect against excessive current, short-circuits and earth faults in PRIMARY CIRCUITS,protective devices shall be included either as integral parts of the equipment or as parts of the building installation
' f4 s% \5 s$ q7 k9 f, G既可以加保护装置又可以依靠建筑安装的“跳闸”保护
还有：For PLUGGABLE EQUIPMENT TYPE A, the building installation is considered as providing short circuit backup protection
5 ?! q/ K3 p7 Q4 d) h, G9 T0 w
是否就是不加保险丝的豁免依据？

jianfie

习惯于看国标，才发现2.7章4943和60950内容差别这么大。等高手解答

Jannie

CENELEC的成员要求产品里面要有保护装置，产品的市场就会很受限制。
0 k1 e; c' S9 l$ v) C个人理解，在其它国家，没有保险丝，但是说明书里有特别的声明，还是可以满足要求的。

; S3 _; ^! W) E# C; L" [; j菜鸟浅见，坐等高手。

June.Zhao

还望高手指导一下~

山炮

GB4943说是B型可插式和永久连接式的可以那么干，按要求说明了就行。

June.Zhao

关键现在样品大都是 PLUGGABLE EQUIPMENT TYPE A
$ d3 ]' E( g" h8 z( w; k2 T/ F# J& w如果跳闸可以作为保护装置的话，进行模拟故障时，跳闸也算是满足标准要求了

安规007

这个你要看BS EN60950-1 最新版才可以，和IEC是不一样的，2.7.1这部分内容曾经被取消掉过，后来又恢复了，内容如下：
) w; X6 w1 B# |- G( a6 z( g2.7.1 Replace the subclause as follows:
Basic requirements
3 z# o3 f, v" L8 s, d8 hTo protect against excessive current, short-circuits and earth faults in PRIMARY CIRCUITS,
9 f: q- v" ]" n. J6 |9 Bprotective devices shall be included either as integral parts of the equipment or as parts of
; D  }" u% k* C# ~" xthe building installation, subject to the following, a), b) and c):
a) except as detailed in b) and c), protective devices necessary to comply with the
requirements of 5.3 shall be included as parts of the equipment;
3 d  A$ v: F9 l/ c  _% i' I9 Lb) for components in series with the mains input to the equipment such as the supply
cord, appliance coupler, r.f.i. filter and switch, short-circuit and earth fault protection
- K3 k  U1 ~! G9 cmay be provided by protective devices in the building installation;
c) it is permitted for PLUGGABLE EQUIPMENT TYPE B or PERMANENTLY CONNECTED
0 E" T  k4 Z& n3 m1 qEQUIPMENT, to rely on dedicated overcurrent and short-circuit protection in the
building installation, provided that the means of protection, e.g. fuses or circuit
9 V! X3 @7 X( Jbreakers, is fully specified in the installation instructions.
! a4 A9 g$ k6 z2 SIf reliance is placed on protection in the building installation, the installation instructions
7 e: K/ ?$ |! Pshall so state, except that for PLUGGABLE EQUIPMENT TYPE A the building installation shall
4 c, g# j" `9 l8 ?+ pbe regarded as providing protection in accordance with the rating of the wall socket outlet.
由其中的a点 shall be included as parts of the equipment;这样的字眼可以看出，产品内部还是必须有保护的，当然不一定是fuse.

狼行成双

什么时候恢复的？我在最新版本的EN60950-1:2006标准中没有找到这些条款，旧版本中却找到一样的。难道是我的最新标准不够新（恢复条款前的版本？）
3 o. |& |9 d" G4 i7 J# e最新版的标准是哪个版本？

June.Zhao

那标准里的这句 for PLUGGABLE EQUIPMENT TYPE A the building installation shall be
% R4 e' i; i# g) ]' |6 Fregarded as providing protection in accordance with the rating of the wall socket outlet
0 I$ |9 e( V0 |# Y1 T' `怎么理解？

茶馆

引用第8楼June.Zhao于2011-05-27 17:34发表的  :
那标准里的这句 for PLUGGABLE EQUIPMENT TYPE A the building installation shall be
regarded as providing protection in accordance with the rating of the wall socket outlet
5 ~* Y+ l% S/ {1 U怎么理解？

If reliance is placed on protection in the building installation, the installation instructions
' @: S  a: w4 I# X, B% lshall so state, except that for PLUGGABLE EQUIPMENT TYPE A the building installation shall
be regarded as providing protection in accordance with the rating of the wall socket outlet.
" P: e$ T0 Q' j
貌似理解有些偏差。