DSH 468 Creepage distances, clearance and distances through insulation

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DSH 468

Creepage distances, clearance and distances through insulation

29.1

60335-1(ed.2) - r* n! ^* H  D5 s- |

Standard: IEC 60335-1:1976, 2nd Ed.
& z3 y+ `7 Z) Y8 gSub clause: 29.1
. u' N; V" E* g! M; t% A$ ?Sheet No. DSH-468
8 q& f: X7 {! M" d4 MSubject: Creepage distances, clearance and distances through insulation
Key words: - distances between mains and SELV circuits
* F3 y/ |7 I$ m( F; \Decision taken at the 40th CTL meeting 2003
# i  X1 x$ H8 u  N! iQuestion:
8 s, s( z. L" |! M5 V! g) DWhat are the requirements for the insulation of the wiring between the mains circuit and the
5 ^7 b( a  z$ [+ Ksafety extra-low voltage circuit?
- q3 p. n3 X. `$ JRationale:
See question.
Decision:
5 v. N6 D! A8 N+ N6 i; n9 uThe insulation of the wiring in the safety extra-low voltage circuit shall comply with the
requirements for basic insulation, whereas the insulation of the wiring in the mains circuit
. \+ I& k$ j- s. Hshall comply with the requirements for supplementary insulation.
The thickness of the insulation of the wiring in the mains circuit shall comply with the
! [; }- ^/ X6 Crelevant cable standard or, as an alternative, it shall comply with sub-clause 29.2 of IEC 335-
+ e2 h# l5 B! a1.
6 n$ ]  g/ s2 x* D- V
+ c/ A5 G8 p& ]4 D3 A/ z6 ]