Creepage distances, clearance and distances through insulation2 [* Y) M* X* x! a+ q
29.1 0 w5 `; l9 ~( E" m# c+ D/ ^; v' m/ }
60335-1(ed.2) ; v4 c# T. X' V8 S
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Standard: IEC 60335-1:1976, 2nd Ed.9 q6 {, y4 T# c+ b2 p" m
Sub clause: 29.1 . ], S2 D9 R% f- t0 L" d. MSheet No. DSH-468 / ?! p% Y1 {0 f8 P: S) y3 iSubject: Creepage distances, clearance and distances through insulation 1 S! }4 T0 W4 B: M# @3 r) a4 \Key words: - distances between mains and SELV circuits 4 l1 T3 \* z7 u2 l0 VDecision taken at the 40th CTL meeting 20031 P- Q8 t) G8 U7 B- o
Question: , x; `/ E, Q- Q/ Z2 D. p6 \What are the requirements for the insulation of the wiring between the mains circuit and the' ]2 h" b M# }# U. V/ V# [
safety extra-low voltage circuit?; \2 t+ X- b1 }! Z3 s
Rationale:( v1 T. m& E+ K3 R; [: X
See question. , \7 `9 X z s( @7 P0 V( F6 p6 zDecision:! b$ Q; c8 n" d
The insulation of the wiring in the safety extra-low voltage circuit shall comply with the9 V' g0 b9 n7 V0 F* D
requirements for basic insulation, whereas the insulation of the wiring in the mains circuit8 t" ~, h: [+ A/ s$ ]6 T" Z
shall comply with the requirements for supplementary insulation. 5 w* b& V- }: P( u! \0 V, w. J pThe thickness of the insulation of the wiring in the mains circuit shall comply with the; _3 T: L5 c, d; p$ L
relevant cable standard or, as an alternative, it shall comply with sub-clause 29.2 of IEC 335-7 v7 _& ~/ x, @3 R
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9 f' W) A* @1 w9 j1 _- t4 X3 T[attach]75864[/attach] . B0 Y) \! K) z) |3 w N
DSH 468