DSH 590 Rule for creepage across grooves and similar surface discontinuities

小米

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 590 ; T: x+ }; b1 h7 @) v1 A: q9 C2 f

Rule for creepage across grooves and similar surface discontinuities / V6 @9 c  v* P+ k9 w

IEC60664-1: 1992 cl. 4.2 IEC60335-1: 1991 Annex E IEC60335-1: 2001 Cl. 29 IEC60730-1: 1999 Annex B IEC60950: 1999 Annex F IEC60950-1: 2001 Annex F IEC60065: 2005 Annex E IEC61010-1: 2002 Annex C IEC60601-1: 1988 Notes Figs 39-47 IEC61558-1: 1988 Annex A IEC61058-1: 2000 Annex A IEC60598-1: 2003 - IEC60745-1: 2001 Annex A IEC61008-1: 2002 Annex B IEC60947-1: 2004 Annex G

60335-1(ed.4) & 61058-1(ed.3) & 60598-1(ed.6) & 61010-1(ed.2) & 60950-1(ed.1) & 60947-1(ed.4) & 61008-1(ed.2);am1 & 60065(ed.7);am1 & 60664-1(ed.1) 0 x$ W4 w3 Q: B) z

Standard: IEC 60664-1/1992
" D' ^" ^7 t: e/ B$ |3 o4 dIEC 60335-1/2001
IEC 61010-1/2002
1 \2 P* j8 I* h; d+ L( X3 AIEC 61058-1/2000
IEC 61008-1/2002
IEC 60947-1/2004
IEC 60598-1/2003
IEC 60065/2005
# _  Q- K( `) B6 J( |2 v4 `$ X+ v# b; XIEC 60950-1/2001
. F# F1 c! m4 \" pSub clause:
& Q. J) S0 b+ w$ y- QSee Table below
DSH N°: 590
Page: 1(1)
2 t- n9 ]4 Q- V& KSubject: Rule for creepage across
grooves and similar
. R6 p! Q0 ~7 }5 m1 @, ]; V6 Jsurface discontinuities
% D4 |9 d5 A0 @Key words:
- Creepage
8 M. w) U) L% M" K/ j$ h- Grooves
8 P0 s: X5 I8 K2 A* j* X# c% p3 P- Conducting path
* n  G- E) ]# A. g/ L- Shortest distance
( \+ h8 |7 R5 A6 H3 n, J2 h- Through air
Decision approved
by the CTL during
5 u0 V6 A: o) T) I9 E3 f( z# [: @$ Qits 43rd meeting in
* k, {8 a) S) aJohannesburg
Question: As can be seen from examples 2 and 6 of IEC 60664-1 sub clause 4.2 corners
with angles greater or equal than 90 degrees are not bridged. IEC 60664-1 does
not contain specific information at which angle less than 90 degrees bridging
shall be applied. Some of the above mentioned standards specify that bridging
* _# y# J: X5 b" v+ D3 T1 Fshall be applied for angles less than 80 degrees.
Can this 80 degree rule be applied in general for all standards?
Decision: Yes. The 80 degree rule shall be applied in general for all standards.

# T' G4 x+ U) k6 O