IEC 60950-1 问题

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请问 IEC 60950-1 Clause 4.3.7 该如何理解 ?
3 j6 f- V* o  d2 W& n  R
标准是要求接地的部份需要装上温度保护器吗 ?
6 K  G2 W/ o9 D
3 j: n+ }3 s/ M" }, {; Y6 p) Z
4.3.7 Heating elements in earthed equipment
* d1 a1 o. Z5 R, y& l& Q) ZHeating elements in equipment that is earthed for safety purposes shall be protected so that,
under earth fault conditions, a fire hazard due to overheating is prevented. In such equipment,
temperature sensing devices, if provided, shall be located in all line conductors supplying the
) D# f& H# p7 S" j3 Hheating elements.
" x4 P* }. k9 ?2 J3 k  YThe temperature sensing devices shall also disconnect the neutral conductor for each of the
9 {7 {9 b4 D/ }" w5 U! y9 I% j& Zfollowing cases:
a) in equipment supplied from an IT power distribution system;
2 Z5 \9 W4 y5 T+ G) _b) in PLUGGABLE EQUIPMENT supplied through a reversible appliance coupler or a reversible
plug;
  R/ t* A* ]( u7 dc) in equipment supplied from a socket-outlet with indeterminate polarity.
In cases b) and c), it is permitted to meet this requirement by connecting a THERMOSTAT in one
' c4 z' s' _. W% Y8 R2 B% tconductor and a THERMAL CUT-OUT in the other conductor.
It is not required to disconnect the conductors simultaneously.

DavidChiu

應該是沒有強制要安裝溫度保護器~~法規是建議,若是有發熱元件是建議安裝溫度保護器,以避免產生火的危險...
' D; b# z9 q. g- I一般溫度保護器比較常見安裝在power supply 或adaptor中...但也不一定都有..若是溫度沒有特別高的話且也符合溫升限制是可以不裝的...
以上是個人見解,如有錯誤請導正