DSH 332 Protection in single fault condition

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

0 J  g3 q# f* p0 x8 j

DSH 332 0 h; d, o3 j9 `$ v" Y

Protection in single fault condition . T( A$ Z& g+ _) L

6.5 1 g3 z- O6 S% V, _* a

61010-1(ed.1);am1;am2

7 P8 b, A- o. J* Y2 O2 o' _
Standard:
IEC 61010-1:1990 +A1:1992 + A2
3 C; P' {9 I* _) \* @' K:1995
Sub clause:
6.5
Sheet n. 332
Page 1(1)
+ J+ C2 I/ |# OSubject:
0 p  D0 l( a2 F* j4 u2 H, J/ j# L6 lProtection in single fault condition
Key words:
- Motor controllers
- Protective earthing
8 R& K4 a% M0 k% vDecision n. 23 taken at
37th meeting/2000
Question:
' Y* p2 N( i7 e! d" d4 R8 \Certain motor controllers have difficulty meeting 0.5mA under normal condition
( R( P. C6 I- S3 G3 k4 p& mand 3.5mA in SFC. Is it possible to have two ways of permanent protective
grounding so that in SFC still connection to PE is assured (for permanent
connections only).
! }9 A+ n( l) C$ LDecision:
8 H0 I. ^) u4 x9 NFollow IEC61010-1 requirements.
. Y: m; z9 \1 w0 W- \; [Explanatory Notes:
The requirement for protective earthing is described under sub-clause 6.5. It should be
5 B# }% Q9 z& w& }& S/ Rnoted that under normal and single fault conditions accessible parts shall meet requirements.
; g5 L9 M# b# ~+ ?3 x6 H' I0 IFor permanently connected equipment the protective earth must not be disconnected as a
single fault.
9 s3 r2 ]4 M8 z" w1 I! |  T

3 Z) |) Q- p1 p0 C  V
9 k, D, \3 H; J6 ?8 J0 g4 {