灼热丝测试

yyfyqzy

广东安规检测
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大家好，有个问题请教
是这样，我的电热丝和引线用奶嘴夹起来，然后固定在胶壳柱子上，但认证单位说要做650度的灼热测试，请问各位，是怎么回事。谢谢诶

seasunsky

什么产品？
做什么标准？
2 C! h, w8 ?  L) ]3 C6 }胶壳柱子还是奶嘴做650℃？

yyfyqzy

洗脚盆，说奶咀要做灼热测试，做CE

yxd2008

哪個認証單位？產品需要做什么認証？
+ [0 Y) r/ q0 {4 Z! N7 K+ p; ]是什么產品？請將問題講明！

barry

glow-wire test 的总定义：
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Parts of non-metallic material shall be resistant to ignition and spread of fire.
This requirement does not apply to decorative trims, knobs and other parts unlikely to be ignited or to propagate flames that originate inside the appliance.    （IEC 60335-1-2006 Clause 30.2）
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再看：

3 L! b  M$ b3 |/ Z; u( M. T30.2.2 For appliances that are operated while attended, parts of non-metallic material supporting current-carrying connections, and parts of non-metallic material within a distance
. |) Y$ t4 o5 n4 A: k( w0 }; [of 3 mm of such connections, are subjected to the glow-wire test of IEC 60695-2-11.
( b3 t. S$ c" L2 Z! YHowever, the glow-wire test is not carried out on parts of material classified as having a glowwire
flammability index according to IEC 60695-2-12 of at least
– 750 °C, for connections which carry a current exceeding 0,5 A during normal operation,
– 650 °C, for other connections.
4 ]( M( }- e) _2 p# g& ~If the glow-wire flammability index is not available for a sample with a thickness within
  Q' N% }! D# c± 0,1 mm of the relevant part, then the test sample shall have a thickness equal to the nearest
, O1 \( X7 w8 D/ Npreferred value specified in IEC 60695-2-12 that is no thicker than the relevant part.
& ~$ o3 q0 y" @' a, O+ z) C; KNOTE 1 The preferred values in IEC 60695-2-12 are 0,75 mm ± 0,1 mm, 1,5 mm ± 0,1 mm and 3,0 mm ± 0,2 mm.
$ `5 ?, q, S# c& ~4 Y1 Q, O- }8 fWhere a non-metallic material is within 3 mm of a current carrying connection, but is shielded
3 a1 l: G; Z9 c6 N& }from the connection by a different material, the glow-wire test of IEC 60695-2-11 is carried out
! g" l& k* N( _at the relevant temperature with the tip of the glow-wire applied to the interposed shielding
material with the shielded material in place and not directly to the shielded material.
0 z0 [' X/ L/ a* m8 PWhen the glow-wire test of IEC 60695-2-11 is carried out, the temperatures are
– 750 °C, for connections that carry a current exceeding 0,5 A during normal operation,
5 u6 [% Z9 Y( W/ d5 q" Y– 650 °C, for other connections.
& k/ t9 W( a, _9 a% rNOTE 2 Contacts in components such as switch contacts are considered to be connections.
NOTE 3 The tip of the glow-wire should be applied to the part in the vicinity of the connection.
This test is not applicable to:
, V: \5 S5 v2 x5 B– parts supporting welded connections;
– parts supporting connections in low-power circuits described in 19.11.1;
– soldered connections on printed circuit boards;
– connections on small components on printed circuit boards;
( f7 l2 o/ Z% v( c$ H, W9 tand parts within 3 mm of any of these connections.
NOTE 4 Examples of small components are diodes, transistors, resistors, inductors, integrated circuits and capacitors not directly connected to the supply mains.
/ w/ \1 a. a. z) c4 ?4 a6 R& DIt is also not applicable to:
5 f; i$ I/ {2 m, M- A– hand-held appliances;
& e! A! K) G- E- j4 j' R. C– appliances that have to be kept switched on by hand or foot;
" q9 \# c+ q) Z9 T; `0 b– appliances that are continuously loaded by hand.
（IEC 60335-1-2006 Clause 30.2.2）

seasunsky

引用第3楼yyfyqzy于2007-06-02 08:18发表的  :
8 `. ~9 K) ~6 g2 N洗脚盆，说奶咀要做灼热测试，做CE

这个肯定要做灼热丝的啊
就是根据有人无人照看
以及通过电流大小决定做哪个等级的了

yyfyqzy

哦，他是说根据EN60335-1 Clause30.2.2规定，
可是我们的脚盆胶料不是防火料，所以我想如果要做灼热测试，我是否可以在奶咀上套一个纤维管，还感谢大家告诉我，这样行不？

wiltoncou

套纤维管是没有用的，如上5楼的红色字部分，请注意，3MM是没有任何限制的，意即：不管多少层，有没有缝，只要在上述连接（奶咀内部引线与电热丝的连接）3MM以内的任何胶料（哪怕有10层20层）均需作灼热丝测试，0.5A以上的作750C，其他（0.5A以下）则作650C。

yyfyqzy

引用第8楼wiltoncou于2007-06-02 13:47发表的  :
: W; `* C& h+ X$ [1 P套纤维管是没有用的，如上5楼的红色字部分，请注意，3MM是没有任何限制的，意即：不管多少层，有没有缝，只要在上述连接（奶咀内部引线与电热丝的连接）3MM以内的任何胶料（哪怕有10层20层）均需作灼热丝测试，0.5A以上的作750C，其他（0.5A以下）则作650C。

1 e2 m. v: Q5 o2 D( X! u: ^我意思是说，套上纤维管，因为纤维管可以通过650度的灼热测试，这样就没有安全问题了，如不套那很可能过不了。

seasunsky

引用第9楼yyfyqzy于2007-06-02 14:12发表的  :
* a8 S4 l3 s7 b; w  ?6 l
8 ~8 i+ i8 K4 {! `8 V

% M7 R+ J7 r1 q7 ?, ?$ v
我意思是说，套上纤维管，因为纤维管可以通过650度的灼热测试，这样就没有安全问题了，如不套那很可能过不了。

好点材料的奶嘴750℃没什么大问题的
- G, J& p* H8 b% M& P或者买认证过的