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; ?5 ]9 W, S$ G8 `# q+ O& g p" m* l# g8 p2 }- [) S
| Protection against Electric Shock, Table D 18
7 M( G3 k- w- j# O* D$ A# x | 6.7
0 k8 h5 l9 J' \ | 61010-1(ed.1);am1;am2
/ C+ t% M8 F* ]" J: R. k) c |
/ ~) x% e/ E5 Q& D% V. r) n: d F
" N$ J& c" W; J/ _) o2 s! v. Z
Standard:0 g3 X C* j0 g' ]
IEC 61010-
) s+ m, J' `( G. [$ a5 A: ]1:1990+A1:1992+A2:1995! j" c0 p( k! \ U, X( M
Sub clause:) l0 j" Z& A/ \7 \) w0 M7 K( Z) J
6.7$ T+ o1 b8 [- s
Sheet n. 304
/ N6 B! u& X& B8 ?- }" pPage 1(1)9 b" z8 H5 _' P5 q! j& b
Subject:
: C% o; Q$ \' i" {Protection against electric shock,
5 b, m5 i. q3 YTable D18' N( Y8 C3 L% V2 C8 c& Q* O
Key words:
1 U) a/ O$ N+ H3 E% \Creepage" f; w7 o) H4 O/ U- b1 K5 K: G
Decision taken by" ^1 U/ j5 N1 |2 J/ z9 {) g& T
ETF3 and confirmed
- R' |, X: M1 R& c: ?3 S$ oby CTL at its 38th
1 R: m% {% ~8 S% omeeting, in Toronto1 x& D4 H$ h* v# ^8 k. p* W
Question:- F' y0 H! Z' W! b4 t
What creepages apply when voltages in excess of 1000V are present on printed wiring
! E- t2 o% u9 J1 y3 kboards?
6 S, h' @6 Z: y8 d, R( C& E2 s7 aDecision:9 m9 C" H% f/ d8 n* t; h9 s
Use the following columns:+ K" L0 r% M4 M
For pollution degree 1 use “Other material”
: z$ O# r& A5 t/ AFor pollution degree 2 use CTI>600
+ P* x: N+ V3 D7 a7 K- m+ _/ vExplanation:
* ~4 {7 m! I, L+ wIEC 60664 Fig. 1 gives the source of these distances and shows that the values are as given
: h# W, _* z& o: v. u- x8 t: Dabove. T% W& I2 [8 V& }0 S, X( F1 U
9 h F8 c# \! H3 t2 S4 u
2 Q4 p$ ?5 ]* C. f
" R; K! e4 X/ F' k W# N
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发表于 2012-9-19 14:59
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