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 9 Z/ J& r# L& W  O6 X0 \% U1 j 6 g+ J  l0 P& Z3 s

Rule for creepage across grooves and similar surface discontinuities

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 & ]( V3 d3 V% o

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)

+ a; e. B' |" p5 A) K; m7 jStandard: IEC 60664-1/1992
IEC 60335-1/2001
IEC 61010-1/2002
IEC 61058-1/2000
IEC 61008-1/2002
7 }4 E+ z. z# H' N9 V, [IEC 60947-1/2004
IEC 60598-1/2003
IEC 60065/2005
% [1 x4 f4 H' I; j; jIEC 60950-1/2001
, m3 t/ m% s2 [Sub clause:
5 m! ?+ g( K2 j; {1 V: ?See Table below
& ]& K; `( |5 L0 iDSH N°: 590
  j- Y% V* M) uPage: 1(1)
Subject: Rule for creepage across
grooves and similar
2 W2 t, K- V8 y8 I7 ^3 c; ~/ \surface discontinuities
9 E" k8 t' Y' l+ Q. s8 y/ Q6 @# z% |5 nKey words:
- Creepage
, a5 ?6 V4 {% i+ y- l4 B( n: P- Grooves
: K0 [/ x0 D2 c6 m- Conducting path
- Shortest distance
- Through air
Decision approved
2 x4 x$ u0 D3 c9 X9 Xby the CTL during
8 O; b4 }' n1 C* N0 W$ S9 _: Xits 43rd meeting in
Johannesburg
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
' o% ^* t% J* l/ H! T# O- r9 w, Qshall be applied. Some of the above mentioned standards specify that bridging
* k/ U3 H8 c& {. ^7 U: mshall 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.


! |6 K% [' d1 W) C