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

Rule for creepage across grooves and similar surface discontinuities & Y- g' m! n8 D' ?& |3 e

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 & P0 K  Z: u3 M( A( h

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)

$ t' W. x! w8 ~+ @: n7 T: FStandard: IEC 60664-1/1992
IEC 60335-1/2001
, g: m! s9 t4 XIEC 61010-1/2002
+ o& q  x4 i% _* `IEC 61058-1/2000
9 M2 V( B! f2 M5 q4 WIEC 61008-1/2002
9 m: D8 ^# ~2 \8 r) |# NIEC 60947-1/2004
6 i% N& I) u" r- ^IEC 60598-1/2003
IEC 60065/2005
$ H. V: q/ Z& {5 ?8 ]IEC 60950-1/2001
Sub clause:
9 B4 [0 O* z: m# E+ SSee Table below
$ t2 W# b* G& P" h. M; cDSH N°: 590
Page: 1(1)
: x: F  F; n$ X3 ISubject: Rule for creepage across
grooves and similar
6 ~' u- ^) ]  d* f7 Gsurface discontinuities
Key words:
- Creepage
& r/ w  ~3 V" W: w0 [- Grooves
% |( R$ P# ?0 O- Conducting path
- Shortest distance
, _4 Z: }9 x; R5 Z- Through air
$ P! m$ _- L1 ?  |Decision approved
by the CTL during
/ U' M! i  o  T) c5 N; gits 43rd meeting in
: F: Q! w1 a2 W9 X' R2 u) IJohannesburg
Question: As can be seen from examples 2 and 6 of IEC 60664-1 sub clause 4.2 corners
3 e: e2 b/ q$ \- Y% x6 iwith 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
shall be applied for angles less than 80 degrees.
; E3 V1 C2 R/ r: n  ]; qCan this 80 degree rule be applied in general for all standards?
/ T$ M2 r; G( l* S: V. o2 DDecision: Yes. The 80 degree rule shall be applied in general for all standards.
! F1 `) p0 ~8 e3 W! {: J5 ]0 _