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|  DSH 723& Q* f$ L. t4 ~' S7 @
( e! k) L+ a, o; O' f1 D; r9 D | Components2 h( M, ~2 z/ `8 Y" l5 w. b
| 24.102.28 Y8 D1 r$ m! ]3 W* y+ W
| 60335-2-21(ed.5)
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Question:, h+ y$ V7 }* f
In IEC 60335-2-21:2002 / A1:2004 the last paragraph states:
5 Z' r6 B# B" G: xThe thermal cut-out shall operate before its temperature exceeds 110 °C. The water temperature shall not exceed by more than 20 °K the maximum permitted operating temperature of the thermal cut-out.
$ v [" g( c% @Considering the above statement, which is the maximum temperature of the water to be measured:
8 o) K: t8 n# V+ }. Ea) 130 °K(110 °K+ 20 °K) or5 y: T1 A, @5 h3 r- |5 V1 K3 i( G
b) Maximum measured operating temperature of the thermal cut-out during test +20 °K?
3 ^: Q! u% H- ^6 E+ Y% Q/ sDecision:
5 Q6 [+ h) B, I- Y) _3 t6 ?The correct interpretation is 130 °C. (option a)" ]0 A4 Y, e, P @1 @0 ?) k
! O3 O3 Y) ?# G2 y- e ?
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发表于 2012-9-8 11:42
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