标题: 关于灼热丝的知识,连接件3mm范围是怎么理解的 [打印本页] 作者: lds08080808 时间: 2009-6-5 22:39 标题: 关于灼热丝的知识,连接件3mm范围是怎么理解的 CL.30,说连接件3mm范围内都要做灼热丝,但是在连接件和绝缘材料之间加了挡板,那3MM还要考虑吗?如果还要考虑,那为什么中间加了挡板(防火材料),那就不用考虑做750灼丝了.作者: 大侠风清扬 时间: 2009-6-5 23:11
3mm为穿透距离 " X8 t$ C! f4 t" B$ p7 j/ y"如果还要考虑,那为什么中间加了挡板(防火材料),那就不用考虑做750灼丝了."+ b e6 i+ J; G1 x8 n5 ~; x
这个哪里来的？以标准为依据作者: shixiafeng 时间: 2009-6-9 23:06
同意二楼的说法作者: lds08080808 时间: 2009-6-9 23:34
CL.30..2..2作者: kendy 时间: 2009-6-10 08:34
30.2.2 For appliances that are operated while attended, parts of non-metallic material2 x0 t& N2 B- u) l4 ~ B+ b
supporting current-carrying connections, and parts of non-metallic material within a distance+ t+ }4 p7 u: R- q3 w+ l& P7 M7 t
of 3 mm of such connections, are subjected to the glow-wire test of IEC 60695-2-11.7 P. @. q; x' [# T9 P8 j1 X0 W" F
However, the glow-wire test is not carried out on parts of material classified as having a glowwire( A% k+ {9 p$ ~$ G& Y0 `8 O1 K
flammability index according to IEC 60695-2-12 of at least% U' S2 y$ R' _- O% x" C8 P
– 750 °C, for connections which carry a current exceeding 0,5 A during normal operation, ; a. Q; O: Z& u" ]– 650 °C, for other connections.3 A9 S. j D# w a: U8 c
If the glow-wire flammability index is not available for a sample with a thickness within+ l4 ~! {6 Z3 y: q: Z* g8 P# ]' ^
± 0,1 mm of the relevant part, then the test sample shall have a thickness equal to the nearest 8 K2 A7 I8 M3 q B/ Ipreferred value specified in IEC 60695-2-12 that is no thicker than the relevant part. ( v- [& D/ T5 }NOTE 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. 6 u. r) ]: c, _6 j6 n5 Z xWhere a non-metallic material is within 3 mm of a current carrying connection, but is shielded, x [" J- T" k; \( Y- m
from the connection by a different material, the glow-wire test of IEC 60695-2-11 is carried out( L2 j0 [4 I: p: [: ?1 m* s
at the relevant temperature with the tip of the glow-wire applied to the interposed shielding$ K$ d6 N2 M( G U7 ~
material with the shielded material in place and not directly to the shielded material.+ {: H0 \2 P' p/ W! N- b# ]
When the glow-wire test of IEC 60695-2-11 is carried out, the temperatures are 0 f! \1 H3 q7 ?( M' A$ |+ Q+ S: B– 750 °C, for connections that carry a current exceeding 0,5 A during normal operation,) E; t# [, u/ g4 J2 M
– 650 °C, for other connections. * _$ g7 E' K* B7 q如果中间挡板能经受住同等温度的灼热丝测试，则不需要对零件3mm内挡板以外的非金属材料进行灼热丝测试，因为就算电弧导致起火，经过挡板隔离后是则不认为可以蔓延至外部零件的，故不需要对其外部零件进行测试。作者: lds08080808 时间: 2009-6-10 21:36
那850的还做吗作者: lds08080808 时间: 2009-6-10 21:39
请问下IEC60695是什么标准的,我看的是IEC60335作者: obstinate 时间: 2009-6-10 22:56
IEC 60335是告诉你什么时候做材料测试 4 _1 v/ y d* y1 R: t5 B& z, m6 u: SIEC 60695是告诉你怎么做材料测试作者: lds08080808 时间: 2009-6-12 22:35
顶上去再钩个高手作者: lds08080808 时间: 2009-6-20 22:02
