EN60335-1:2002认证问题！！

小胖tommy

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    现在俺手头有个产品要做这个认证，第三方发回一个整改报告，判定俺fuse不应放在varistor后，说是依据啥决议规定varistor也要做故障实验，请问这个是一定要遵守的嘛？？

xiaodeng

是的。因为在你短路varistor的时候没有任何的保护，相当于短路L-N，短路电网， 所以在CTL决议里面规定， 必须放在保险丝后面。

yaotongsuo

Decision:  

- R/ j, X( i6 K! T& ta)  Varistors across the mains. Accepted by all countries (when the varistor is separately certified)
( u: y' b  P/ H
b)  Varistors across the mains with a protective device to guard against short-circuit.
1 b  |( N7 A. v  G( t     Accepted by all countries (whether the varistor is separately certified or not)

liscsupor

yaotongsuo 发表于 2013-1-12 09:19
Decision:  
+ }7 e. X  K9 N, g( C  E9 w
& |' h7 L* `, W  b. G5 wa)  Varistors across the mains. Accepted by all countries (when the varistor is separ ...

决议编号是多少啊？

moon1939

不需要看决议，看19章节就可以判varistor不可以放在fuse之前，varistor在一般情况下只能作为功能绝缘。

liscsupor

moon1939 发表于 2013-1-12 14:21
/ C" A$ ^5 W" K+ H% o: c! v不需要看决议，看19章节就可以判varistor不可以放在fuse之前，varistor在一般情况下只能作为功能绝缘。

0 \  W) d5 |6 y* {' N+ W- t正因为是功能绝缘，需要进行19.11的试验。
安全标准并没有直接确定VDR布置位置，试验证明将VDR放在FUSE后，是符合标准的要求。如果有明确的决议文件，则可起到设计指导的作用。

小胖tommy

liscsupor 发表于 2013-1-12 14:49
: h# m* R# h4 S( g; v3 z; d+ n正因为是功能绝缘，需要进行19.11的试验。
" J0 Y) K1 ]9 C7 ?6 k安全标准并没有直接确定VDR布置位置，试验证明将VDR放在FUSE后 ...

那这条是必须强制遵守的吗？还是说我可以打擦边球？？

fasten

http://bbs.angui.org/thread-104454-1-1.html
! ^( B$ h# @  o) G9 c4 cVaristors (VDR’s) across the mains


Question:
Reports from different Testing Laboratories and clients expose essential differences in interpretation and testing practice between laboratories and/or Certification Bodies.
Actually, the practice of one Certification Body is now being a market factor.
Based on above concerns we ask for clarification:
1: Shall Cl. 19.11 be strictly followed or can solutions given under 2. be accepted.
2: Can any of the decisions (made by OSM/EE) be accepted?
( g' G5 \+ X6 t# {8 r% Z5 o- A: VDR’s across the mains are accepted if the VDR is separately certified according to IEC 61051-1 or according to CECC 42200.
- B: VDR across the mains with a protective device to guard against short-circuit is acceptable.
- C: If A and B are acceptable, should, because of the fact that VDR’s may burn or burst during life-time due to an increasing temperature stress caused by increase of leakage current with a number of switching cycles in the VDR, a thermal interrupting device on the VDR connected in series with the VDR be required.
Decision:
- c  Y, ]5 |  i- Y$ a5 v, F1. VDR’s are not short-circuited if they are used within their manufacturer’s declared specification, when tested according to Sub-clause 19.11.2 of IEC60335-1(1991).
4 X( X; [: E% @* R2 E& o6 y; y* u2. VDR’s are short-circuited regardless of compliance with IEC61051-1, when tested according to Subclause 19.11.2 of IEC60335-1(2001).

9 `: W6 w1 f; H% s5 f" K

liscsupor

小胖tommy 发表于 2013-1-12 20:07
那这条是必须强制遵守的吗？还是说我可以打擦边球？？

1、建议设计前应考虑这个问题。
* I! r; H: \( A- G2、如果由于结构等因素无法将VDR放置在FUSE之后，可将VDR两引脚相连的铜铂走线设计很细（即薄弱环节部分）。在VDR短路时，由细的铜铂起FUSE作用；但应注意19.1注2的要求。

liscsupor

fasten 发表于 2013-1-12 20:49
http://bbs.angui.org/thread-104454-1-1.html
8 D; L/ G0 T" E" e& z6 d" |Varistors (VDR’s) across the mains

2 s; ?+ K' D  }6 {; ^6 ], r5 I谢谢！
9 R0 k3 k7 z+ U+ ~2 U; S决议是DSH-568。