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|  DSH 638
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| Resistance to heat and fire+ o2 b% p& a# V' U' d3 X/ H
| 30.2.3.1# a. K, L2 g0 I5 t, Q% }
| 60335-1(ed.4)8 [/ _' [' _8 ]& A% }" j
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w: ^# C8 B' }" _. F. v }Question:
& |0 t ?6 X! w+ rSub-clause 30.2.3.1 reads: "parts of insulating material supporting connections that carry a current exceeding 0,2 A during normal operation, and parts of insulating material within a distance of 3 mm of such connections, shall have a glow-wire flammability index of at least 850ºC according to IEC 60695-2-12, the test sample being no thicker than the relevant part"
4 ^- c9 t U. H* J. {Certain motors, have a nominal current around 0,2 A (for example, the pump of a washing machine), but during a certain time (for instance, because changes in the load, or the in-rush current) the current exceeds the limit of 0,2 A.% {' R+ I; @/ A9 v5 }- b
Shall the current in these periods of the motor be ignored, independently of its duration, in order to compare with the 0,2 A limit?
~4 D ^8 a1 m; v8 Y4 R* LDecision:7 i6 U7 p* n/ Q. T6 r2 ^" |3 F8 A7 y
The current to be considered will be the average current in the relevant operating period.+ _/ V. n9 B" V7 x
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发表于 2012-9-8 15:38
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