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|  PDSH 1009
, c8 B# F k* \1 }1 |5 t& h+ u% e- ?0 t2 d
| Short circuit across creepage distances and clearances
' O9 y u0 |2 f# M+ f* ^% a+ m3 R, R | 14.15 p, Q* i( t; x& j2 b/ F! R
| 61347-1(ed.1);am1 & 61347-1(ed.2);am15 o% c" I; Q; V7 ~, H& ^
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+ @- {6 {' }* y4 dStandard(s):: R: J" i( t; i" @( Q+ S4 m; c
IEC 61347-1 All editions
0 n' S/ f0 i+ D" Q+ R" ]Subclause(s): 14.11 D8 m- b$ ]; z( b, `
No. Year PDSH 1009 2010
# B% r. [2 k4 {: \+ D$ g- uCategory: LITE Developed by: ETF5 OSM/LUM& O8 \4 s' s3 s& g: o7 y
Subject:
( P, A( @: q) R$ RShort circuit across creepage distances and clearances# H4 E4 B, t& M$ a( o
Key words:% T4 ~! o- w& @$ B" k: Z
- COMEX
" M& B+ ]3 g5 S k( K$ q% K# s2 D- PCB
o. f1 e; R% Y; d v- Creepage distance and clearance
' Z3 N" w& r/ \" M2 Y. ]To be approved at the 49th CTL Plenary Meeting, in 20129 q" \. P. B4 W5 v" ]) T
Question:6 n1 a( R; Z4 h: x3 u) c9 M9 [9 B
The standard specifies that between conductors on PCB’s, which are protected from surge energy from the
6 n& F, f5 z+ T( |supply (for example choke winding or capacitor) the creepage distances and clearances may be reduced.5 o& }3 P+ Y; x. J! E+ O: N9 Z2 U2 t
Would such a reduction be acceptable after track-fuses, even before components, which reduce the supply: C6 ?& [& S6 o
surge energy?7 X( G5 n) Q1 q0 Y9 Y
Decision:
: D) O. I# D% O4 P2 @% V6 xNo.* R1 W$ v4 V* [. r% n
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