DSH 506 Creepage distances, clearances and distances through insulation

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DSH 506 , s8 ]" M9 o2 ~4 u+ M# p7 t8 z6 j

Creepage distances, clearances and distances through insulation

29.2

60335-1(ed.3)

, {) E/ M0 h- A; E, \5 x4 f% T8 g' L' }Question:
What creepage and clearance distances apply across parts of same polarity when a cut out
operates during clause 19?
Rationale:
- [" I5 E- d: D" U& D. S+ nSee question.
Decision:
- y  u+ e0 p' g8 U# @' ZIn this situation the live parts of thermal cut out in the open position are considered as parts
of different polarity.
2 C" S- x1 E' A0 xWhen measuring creepage and clearance, the distances should be checked according to the
component standard. If the cut out does not operate for all the tests of all clauses, the
  Y% x: \2 J  X# F! F0 a7 H6 O! Mdistances are not measured because there is no open circuit and no parts of different polarity.
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