DSH 638 Resistance to heat and fire

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广东安规检测
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小型摆管淋雨试验机

IPX5X6X7喷水试验机

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灯具防风罩

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家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 638 ! E" O7 I' U( ~2 G8 q5 |9 h+ h4 E( l 2 k8 m( E- M. G* A% ?; g' X; E

Resistance to heat and fire . H4 N2 J' M- Z8 U0 c4 [1 y

30.2.3.1

60335-1(ed.4) # o- n1 O9 ^" a1 z/ a

' R! V% g% B$ L, \. y/ f* z& p" hQuestion:
0 D! Z$ ]) x% {2 GSub-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"
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.
, t! O8 u+ z9 qShall the current in these periods of the motor be ignored, independently of its duration, in order to compare with the 0,2 A limit?
Decision:
8 ^2 n2 y! p, I" tThe current to be considered will be the average current in the relevant operating period.

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