IEC 60950-1 问题

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请问 IEC 60950-1 Clause 4.3.7 该如何理解 ?
- p" w! \; q( R* @) K
标准是要求接地的部份需要装上温度保护器吗 ?


4.3.7 Heating elements in earthed equipment
+ U: {4 i9 \; V4 Q6 \: RHeating elements in equipment that is earthed for safety purposes shall be protected so that,
* k5 |4 g0 V# H8 O' }" J1 @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
heating elements.
! F  J  H' }( gThe temperature sensing devices shall also disconnect the neutral conductor for each of the
2 I! @' d7 }) V3 ?1 qfollowing cases:
a) in equipment supplied from an IT power distribution system;
  w9 Y2 j  {' n1 u+ db) in PLUGGABLE EQUIPMENT supplied through a reversible appliance coupler or a reversible
plug;
: x- i# D' \- ]$ ^* b. bc) in equipment supplied from a socket-outlet with indeterminate polarity.
( ]" {, _. F) K0 b; U2 n1 D- u+ `In cases b) and c), it is permitted to meet this requirement by connecting a THERMOSTAT in one
conductor and a THERMAL CUT-OUT in the other conductor.
8 K3 J6 m& \2 X& Z& _9 c( BIt 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: l% j2 w7 O3 a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...
- L, I: V" v  T5 G; K# p/ e$ ?+ i以上是個人見解,如有錯誤請導正