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30.2.2 For appliances that are operated while attended, parts of non-metallic material! T* q7 h4 C% [0 w3 ]
supporting current-carrying connections, and parts of non-metallic material within a distance. Y/ c# L+ M! _) q; v! ^5 J2 s
of 3 mm of such connections, are subjected to the glow-wire test of IEC 60695-2-11.
9 B! B( ?6 J" j8 T- ]3 Q! k5 i, WHowever, the glow-wire test is not carried out on parts of material classified as having a glowwire
9 J+ a. T% ~0 n6 z n2 R; W: fflammability index according to IEC 60695-2-12 of at least
. d* b% \4 r, E. H( j– 750 °C, for connections which carry a current exceeding 0,5 A during normal operation,
6 e% A# D' O" e, r– 650 °C, for other connections. }" a- s4 p3 Y4 `' m% `
If the glow-wire flammability index is not available for a sample with a thickness within7 y2 z$ ?! h% |# x
± 0,1 mm of the relevant part, then the test sample shall have a thickness equal to the nearest3 }$ A$ ^3 p* Y2 G
preferred value specified in IEC 60695-2-12 that is no thicker than the relevant part., Y2 S: ?# I& m$ G# j# u
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.' i0 d1 d! g* } u: V9 G3 h
Where a non-metallic material is within 3 mm of a current carrying connection, but is shielded
! F0 E( A1 ?8 M/ Jfrom the connection by a different material, the glow-wire test of IEC 60695-2-11 is carried out
& W( L V$ g1 Z' ?2 Dat the relevant temperature with the tip of the glow-wire applied to the interposed shielding$ Y9 H7 t2 I' H h' g+ O( G
material with the shielded material in place and not directly to the shielded material.8 L5 c: j& X0 i5 @" s2 ^+ X3 w5 Q$ E
When the glow-wire test of IEC 60695-2-11 is carried out, the temperatures are
% g1 c* s9 a+ ~3 H– 750 °C, for connections that carry a current exceeding 0,5 A during normal operation,
5 L6 U. V1 e" ~3 R: q! u- U– 650 °C, for other connections.) q) `, R5 q! T" F
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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