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|  PDSH 10092 k1 D) z7 h) d8 K/ H( N
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| Short circuit across creepage distances and clearances' j% \2 C' F, g6 z
| 14.1
4 U& A1 p2 T" P$ ? Z | 61347-1(ed.1);am1 & 61347-1(ed.2);am1
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Standard(s):
6 U6 i1 k' |: P7 ]3 lIEC 61347-1 All editions( R2 |+ P3 e6 D# q$ X- y
Subclause(s): 14.1
8 ~+ o7 f2 G$ _ DNo. Year PDSH 1009 20106 [0 I: M2 N! k1 p& y1 G; \
Category: LITE Developed by: ETF5 OSM/LUM! W/ j, I9 q, T% U$ k
Subject:
: s/ P: z. i/ L. vShort circuit across creepage distances and clearances
i/ a! s5 Z* c& ^: ?& t* b: [# |Key words:
& F5 g& {$ s. O B! C8 ^- COMEX% Z8 w. O3 \6 g V# ]
- PCB
# O: i" e* v" C% t0 l5 |4 Y" F3 G- Creepage distance and clearance* r9 T. d! J/ o& T
To be approved at the 49th CTL Plenary Meeting, in 2012
# L" W- @; `2 {Question:# {$ T7 Q4 ~( D+ g4 c8 P1 V. U
The standard specifies that between conductors on PCB’s, which are protected from surge energy from the
! B) c9 O% @( ]7 `. t1 S' Lsupply (for example choke winding or capacitor) the creepage distances and clearances may be reduced.
. ]& ^+ b# r# d% u; {% OWould such a reduction be acceptable after track-fuses, even before components, which reduce the supply
K! G( r6 j4 s! \surge energy?. e4 | R. W- M3 o- k8 {
Decision:; o6 h2 n w* f/ m/ N( x; W9 p
No.
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发表于 2012-9-17 15:52
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