DSH 580 Resistance to heat and fire

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广东安规检测
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IEC60335试验指甲

DSH 580

Resistance to heat and fire ( d% a/ ?4 c# ~8 p2 s& _& G# ]

30.2.3.1 3 P* A. z0 e6 w

60335-1(ed.4)

Question:
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
account?
/ z6 m& |- g; Z. |9 n9 q/ jDecision:
6 i( ~# c. o5 t" d4 D! lThe glow wire test may be used as alternative of GWFI test, according to the document 61/2869/CDV.
0 J/ Q5 L' u0 w7 }" N5 nThe alone declaration of the component manufacturer concerning GWFI test is not accepted.

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