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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.
& G' W, f4 D2 T5 [8 v; aThis 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：
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- A5 F5 Z' U" ^8 K30.2.2 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
" {: @$ H3 A( P. u; J$ ~of 3 mm of such connections, are subjected to the glow-wire test of IEC 60695-2-11. 7 d; ^3 _8 Z( L
However, the glow-wire test is not carried out on parts of material classified as having a glowwire) x0 U H6 D9 |- `
flammability index according to IEC 60695-2-12 of at least
; V( i! \! a2 I& b: ]. b– 750 °C, for connections which carry a current exceeding 0,5 A during normal operation,/ Y p! [, r) s. b6 c8 D+ b6 t) u$ H
– 650 °C, for other connections.! a' L5 K/ q$ Q. y" m+ Y
If the glow-wire flammability index is not available for a sample with a thickness within
+ ~+ f! P+ v2 m9 T, e. K± 0,1 mm of the relevant part, then the test sample shall have a thickness equal to the nearest2 h: k$ g% a7 \4 D7 }. \" P
preferred value specified in IEC 60695-2-12 that is no thicker than the relevant part.9 L* | P- P. x
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.' o& c8 _- f- q8 c) |3 {
Where a non-metallic material is within 3 mm of a current carrying connection, but is shielded! l* s' [2 S6 i- K. R- m! _
from the connection by a different material, the glow-wire test of IEC 60695-2-11 is carried out
- [4 A( m+ P* `! a7 L- eat the relevant temperature with the tip of the glow-wire applied to the interposed shielding
& S! I( U* o+ A, lmaterial with the shielded material in place and not directly to the shielded material.
1 o4 J" n. n; p# O4 V7 uWhen the glow-wire test of IEC 60695-2-11 is carried out, the temperatures are
& ^/ Y/ E; W5 {– 750 °C, for connections that carry a current exceeding 0,5 A during normal operation,# A$ b c# J, Z; I1 L$ i" V; k$ S
– 650 °C, for other connections.
6 ^3 F: m' z! F: S+ N' g2 S" q; |NOTE 2 Contacts in components such as switch contacts are considered to be connections.+ s& z. ~/ D" ?$ e6 G
NOTE 3 The tip of the glow-wire should be applied to the part in the vicinity of the connection.' F5 c! w% c o9 G
This test is not applicable to:
( E4 O- B/ P5 x6 y0 A+ Y: l$ H– parts supporting welded connections;
: T/ d$ C6 [1 e0 S1 P, S– parts supporting connections in low-power circuits described in 19.11.1;
$ J5 K9 \) @$ ^( C! @$ N( K/ k" V8 Z- D– soldered connections on printed circuit boards;6 A' [: W, l- X! T2 F+ W4 p7 g
– connections on small components on printed circuit boards;9 I s; z* E# I1 x# u5 n4 E2 M
and parts within 3 mm of any of these connections. d- t$ ?: x$ `) N+ X5 E: E) w
NOTE 4 Examples of small components are diodes, transistors, resistors, inductors, integrated circuits and capacitors not directly connected to the supply mains.1 r3 ` [& R5 R7 D
It is also not applicable to:% o( P: }" {% n3 h, Q8 B
– hand-held appliances;
2 Y- K) ]* F% {( Z& Y– appliances that have to be kept switched on by hand or foot;
% b$ _: y! Q5 z1 r– appliances that are continuously loaded by hand. ! a' ^" P9 e1 g. R$ A
（IEC 60335-1-2006 Clause 30.2.2） |
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