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:  

a)  Varistors across the mains. Accepted by all countries (when the varistor is separately certified)

# \' y' B2 ?9 p$ N4 wb)  Varistors across the mains with a protective device to guard against short-circuit.
" d0 f0 W9 U- [: Q, ~     Accepted by all countries (whether the varistor is separately certified or not)

liscsupor

yaotongsuo 发表于 2013-1-12 09:19
Decision:  
9 g3 a$ d  w4 {* [3 B
a)  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
8 m$ k$ n# X0 ?- |. b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。

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
正因为是功能绝缘，需要进行19.11的试验。
( n' r+ W9 }) m( ^4 _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
Varistors (VDR’s) across the mains
8 [4 U% n: o% A+ a( V- L

Question:
2 N$ K4 r/ Q5 L# m9 ~* n& {Reports from different Testing Laboratories and clients expose essential differences in interpretation and testing practice between laboratories and/or Certification Bodies.
* z8 f: G6 o% {' f  X. |7 O' }Actually, the practice of one Certification Body is now being a market factor.
7 M5 ~* Q8 n/ U" y: _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?
$ B# R) r) I+ x, z! o' c% }6 Q- A: VDR’s across the mains are accepted if the VDR is separately certified according to IEC 61051-1 or according to CECC 42200.
( ]! W: c, M4 t7 \0 N5 x- 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.
. g1 L0 S# m- g# E, u. VDecision:
/ n4 @4 J" |- x: r4 f) a1. 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).
2. VDR’s are short-circuited regardless of compliance with IEC61051-1, when tested according to Subclause 19.11.2 of IEC60335-1(2001).

6 v- d; I2 B2 e2 H2 e

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。
  `4 Q. x/ _2 R% I) k' G7 n2、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
# `. N# A, }! [/ L( s7 Rhttp://bbs.angui.org/thread-104454-1-1.html
Varistors (VDR’s) across the mains

谢谢！
( f, [. ~, Y5 q' D0 S+ ^/ i! ~8 G决议是DSH-568。