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|  DSH 580
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| Resistance to heat and fire3 U/ y( d! c' j1 T
| 30.2.3.11 B( D+ [% M7 h/ |" T8 O! [) Z7 W$ S
| 60335-1(ed.4)! [" `/ J# k. i8 S5 R
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0 j$ W7 H" k8 w) s$ QQuestion:
. N8 h8 J% i# r3 z d" ]The sub-clause 30.2.3.1 requires the glow wire test on three specimens according to IEC 60695-2-12 to verify the GWFI of 850 °C of insulating materials supporting connections for current exceeding 0,2A and of parts of insulating material within a distance of 3 mm of such connections. As there are many difficulties to receive from the manufacturers the three specimens required for the GWFI test, is it possible to accept a declaration of the manufacturer, with reference to the thickness and colour, that the plastics used have a GWFI of 850 °C? Or the document 61/2869/CDV which is under vote during the IEC/TC61 has to be taken into
g7 o1 u& [* Q9 Z3 Kaccount?
5 D4 `( c+ _. K, TDecision:" ]- A4 @7 d) s2 h/ D, W3 O
The glow wire test may be used as alternative of GWFI test, according to the document 61/2869/CDV.
5 k1 ~, q# B+ r4 v5 {2 N0 K% J9 J f; QThe alone declaration of the component manufacturer concerning GWFI test is not accepted.* b8 j( E+ e8 J6 y# I6 K: M7 a( B
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发表于 2012-9-8 19:48
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