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|  DSH 580
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; B' j# g l8 S9 J, W- N8 s | Resistance to heat and fire! g. O1 f7 C. N, Y0 |
| 30.2.3.1' ~% S' e$ p6 X% {. _! }1 W% h- A
| 60335-1(ed.4)
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Question:5 _# F5 t7 I; A& d8 ?5 ~* z! V
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
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Decision:
% g" ~8 X) H# e T$ pThe glow wire test may be used as alternative of GWFI test, according to the document 61/2869/CDV.( \3 ?: W$ }# G4 j6 K! w
The alone declaration of the component manufacturer concerning GWFI test is not accepted.* H W+ }" z$ O" {. X" b k9 Z
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发表于 2012-9-8 19:48
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