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

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灯具防风罩

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E12灯头量规

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IEC60335试验指甲

DSH 638 # F, P7 w" j- d* p, U" `  c* \( q7 J

Resistance to heat and fire

30.2.3.1

60335-1(ed.4) . B; U8 T# S& o: c

$ v$ o) s; L) b9 T8 o# l# bQuestion:
5 i* @0 i- M2 A4 w- T6 z" nSub-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.
7 c, b3 W. e: @/ j/ SShall the current in these periods of the motor be ignored, independently of its duration, in order to compare with the 0,2 A limit?
3 }1 u7 q8 f- V3 F" c1 oDecision:
1 T( M& }, L: G( m- G- j: |! rThe current to be considered will be the average current in the relevant operating period.
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