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glow-wire test 的总定义：9 A* Y4 O' K, I; C& v8 n7 o4 w- Z
& W$ u& v& B* R' k5 \; zParts of non-metallic material shall be resistant to ignition and spread of fire." D! r5 x4 q' u/ j2 X5 U# n
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）2 M! S) y- U3 y! o8 o. ?
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9 m0 V' s( N. _2 l% l! G2 t再看：
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( l4 C& R5 G. R- @' p30.2.2 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
+ L7 W4 O: ?3 Bof 3 mm of such connections, are subjected to the glow-wire test of IEC 60695-2-11.
: o F! \2 Y' M" u: SHowever, the glow-wire test is not carried out on parts of material classified as having a glowwire
2 z- X j4 q9 R& nflammability index according to IEC 60695-2-12 of at least! z: x3 P3 C ]
– 750 °C, for connections which carry a current exceeding 0,5 A during normal operation,8 K8 x: G/ D3 a8 B9 T6 C4 r& A( c+ ]
– 650 °C, for other connections.- p3 w2 ]8 V$ [: u3 D. Z/ L
If the glow-wire flammability index is not available for a sample with a thickness within
( J2 K, h8 `' x5 \+ H+ [. f. X7 H3 o± 0,1 mm of the relevant part, then the test sample shall have a thickness equal to the nearest
Q' a9 R/ g; j2 v6 Apreferred value specified in IEC 60695-2-12 that is no thicker than the relevant part.* i/ w! W6 o; k- G* j- W' D2 v
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 Y- b# x G* D. aWhere a non-metallic material is within 3 mm of a current carrying connection, but is shielded% H: l$ S0 q# @# Y
from the connection by a different material, the glow-wire test of IEC 60695-2-11 is carried out6 Q% W, E3 R3 t) M$ B$ g
at the relevant temperature with the tip of the glow-wire applied to the interposed shielding
$ t: l. j- r5 G) B R& q* G3 Q0 Z2 gmaterial with the shielded material in place and not directly to the shielded material.
7 G% Y# {; L3 H i: MWhen the glow-wire test of IEC 60695-2-11 is carried out, the temperatures are$ V+ \: ~8 C5 u$ R$ H' X
– 750 °C, for connections that carry a current exceeding 0,5 A during normal operation,
& [8 i' ]) M: a6 @8 J! h– 650 °C, for other connections.
7 u5 l ^' `8 H0 e( m. `! h3 uNOTE 2 Contacts in components such as switch contacts are considered to be connections.
5 f# s" d. I% c9 J% _4 mNOTE 3 The tip of the glow-wire should be applied to the part in the vicinity of the connection.$ \' g7 Q- l) k' k
This test is not applicable to:4 n" o+ A" r, ]
– parts supporting welded connections;) `4 O$ b4 T) }, ^2 D; Z/ q
– parts supporting connections in low-power circuits described in 19.11.1;3 |) h& S3 [$ R% o; R( d' \
– soldered connections on printed circuit boards;
6 l( m7 @4 `& w: {6 ?! S' z" }– connections on small components on printed circuit boards;
: R- P6 u+ o# V M* p3 Z1 ~! k7 t6 o% Eand parts within 3 mm of any of these connections.* Q) l+ }# b; c
NOTE 4 Examples of small components are diodes, transistors, resistors, inductors, integrated circuits and capacitors not directly connected to the supply mains.
5 V+ g: z) P. W' d3 eIt is also not applicable to:3 ^0 x; Y, H5 V; b6 S
– hand-held appliances;+ r; q1 f Q+ x2 c: N$ K5 u9 r5 { Q
– appliances that have to be kept switched on by hand or foot;1 w" L1 A3 a& g$ O( J @% O- n) {% [8 X
– appliances that are continuously loaded by hand. 5 k3 o6 w- u; z' i
（IEC 60335-1-2006 Clause 30.2.2） |
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