关于灼热丝的知识,连接件3mm范围是怎么理解的

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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.

大侠风清扬

3mm为穿透距离
"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."
& S4 Q' Z  W" w; `. j 这个哪里来的？以标准为依据

shixiafeng

同意二楼的说法

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CL.30..2..2

kendy

30.2.2 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
% o% G1 Y- V& b: x+ tof 3 mm of such connections, are subjected to the glow-wire test of IEC 60695-2-11.
4 E0 j- D& L% n3 h+ SHowever, the glow-wire test is not carried out on parts of material classified as having a glowwire
0 i8 s3 L/ n. jflammability index according to IEC 60695-2-12 of at least
6 Y* ?+ v- |' }- p# L! b– 750 °C, for connections which carry a current exceeding 0,5 A during normal operation,
– 650 °C, for other connections.
' O/ T3 w: E4 o2 o) m8 WIf the glow-wire flammability index is not available for a sample with a thickness within
$ H# ?; U2 f9 x; T± 0,1 mm of the relevant part, then the test sample shall have a thickness equal to the nearest
preferred value specified in IEC 60695-2-12 that is no thicker than the relevant part.
# \  {. b7 I" k# P6 VNOTE 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.
) `4 h6 ~% Z- \' U; w$ d1 ]6 x- z3 RWhere a non-metallic material is within 3 mm of a current carrying connection, but is shielded
from the connection by a different material, the glow-wire test of IEC 60695-2-11 is carried out
at the relevant temperature with the tip of the glow-wire applied to the interposed shielding
: C; [$ o" G# ?1 A7 j( U& ?material with the shielded material in place and not directly to the shielded material.
1 [+ A) b4 f0 IWhen the glow-wire test of IEC 60695-2-11 is carried out, the temperatures are
2 ~6 `5 m) A: `( {7 p8 `– 750 °C, for connections that carry a current exceeding 0,5 A during normal operation,
# K+ O6 t- o+ ?: B– 650 °C, for other connections.
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。

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那850的还做吗

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请问下IEC60695是什么标准的,我看的是IEC60335

obstinate

IEC 60335是告诉你什么时候做材料测试
IEC 60695是告诉你怎么做材料测试

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顶上去再钩个高手

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