DSH 499 Creepage distances, clearances and distances through insulation

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DSH 499

Creepage distances, clearances and distances through insulation / ]& [  D0 s) V4 s

29.2.2 0 f; n3 l' d% A$ k" c

60335-1(ed.3)

/ X( u: E# Q! y1 m2 Q9 b* rStandard: IEC 60335-1:1991, 3rd Ed.
! C/ `  G4 i% q4 R) |Sub clause: 29.2.2
Sheet No. DSH-499
' h; t$ ~" v6 ]5 MSubject: Creepage distances, clearances and distances though insulation
Key words: - thin sheet of insulating material
Decision taken at 40th CTL meeting.
Question:
Is one thin sheet of insulating material on the inside of accessible metal acceptable as reinforced insulation?
7 C- [* G/ G( b/ ^7 f: wRationale:
0 c. H$ i5 w4 Q7 B/ P5 ?' z' ^7 _See question.
) Z  _) l- m, M5 l. NDecision:
, n* l; j# n. I5 SIt is acceptable based on the standard.

3 O+ }& T- {$ \$ t* S5 ~" U, ]
; I( K6 W: }9 s( n/ w( b% L. q