IEC 60950-1 问题

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请问 IEC 60950-1 Clause 4.3.7 该如何理解 ?

  i4 Q* z, v* _标准是要求接地的部份需要装上温度保护器吗 ?

, e" s5 c5 _9 R' j/ j
4.3.7 Heating elements in earthed equipment
Heating elements in equipment that is earthed for safety purposes shall be protected so that,
/ B! b9 M% G$ `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
& V' w- B7 Q. ~& J- Fheating elements.
  P' X, @. R& z* ?. o0 kThe temperature sensing devices shall also disconnect the neutral conductor for each of the
following cases:
0 X  J7 E$ z$ w+ ]9 `a) in equipment supplied from an IT power distribution system;
- ]5 g9 x! a; Ib) in PLUGGABLE EQUIPMENT supplied through a reversible appliance coupler or a reversible
plug;
' ~2 n, t' U+ hc) 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
0 n9 ~; A( T( q& W5 Gconductor and a THERMAL CUT-OUT in the other conductor.
# {" i, i2 o; U$ `. ^6 VIt 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...
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...
& _" ?, g- N2 H7 R- x- |" M  u以上是個人見解,如有錯誤請導正