DSH 506 Creepage distances, clearances and distances through insulation

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DSH 506 . O1 p9 ?  y+ c! M

Creepage distances, clearances and distances through insulation ' W3 `  \9 f: A1 G

29.2

60335-1(ed.3) 1 k% N6 O0 e, N4 w& i+ X  D

Question:
. s" k- T" ~3 q8 \What creepage and clearance distances apply across parts of same polarity when a cut out
5 ~8 `2 ~7 f/ ioperates during clause 19?
5 g! c* b# Y/ ?1 j$ I: LRationale:
See question.
Decision:
" e8 g- Z6 {4 f2 \& FIn this situation the live parts of thermal cut out in the open position are considered as parts
of different polarity.
When measuring creepage and clearance, the distances should be checked according to the
5 L+ G5 s' L: t) H) a9 Xcomponent standard. If the cut out does not operate for all the tests of all clauses, the
  U0 Q; t4 \6 P% O9 U7 Ddistances are not measured because there is no open circuit and no parts of different polarity.