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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UL498插头插座量规

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家电125mm试验指

E12灯头量规

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IEC60335试验指甲

DSH 638   U+ D) J' _" s6 [: y

Resistance to heat and fire 6 h- I0 v# P4 E" s6 `' B, @

30.2.3.1 ( p  E; w& u5 T1 a

60335-1(ed.4)

- {" k9 i. ^- l/ N) }( OQuestion:
Sub-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.
3 I$ \+ k. k  o! I1 }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?
/ i/ g  P' j# u/ l( _3 ^9 vDecision:
The current to be considered will be the average current in the relevant operating period.
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