DSH 309 Overcurrent Protection, Note

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

- [) V5 [. K$ P$ p% Y9 X. e0 U" g8 k

DSH 309 + ^: c. Y* n0 |2 N9 H2 e

Overcurrent Protection, Note

9.6

61010-1(ed.1);am1;am2 6 l$ ?! Y5 M& u0 U

+ i$ S3 s4 ?6 k
4 S( B; [4 U& o4 I$ I( {3 j' oStandard:
( W) W/ a9 T% L( lIEC 61010
( n% f3 Y# M9 XSub clause:
7 I2 [/ e  \! i  s3 w; t5 p+ n& D9.6
- i8 _7 p5 I6 ZSheet n. 309
+ ]2 L8 z$ h+ U3 ePage 1(1)
Subject:
# x4 P& A) \8 g/ X' @% j$ g! qOvercurrent Protection, Note
, h. n8 e( r" _& {4 bKey words:
- Mains
- Fuse
Provisional decision taken by ETF3 and confirmed by CTL at its 38th meeting, in Toronto
Question:
The note recommends that both supply conductors are fused. How is this recommendation applied?
: Z# g6 {: h4 f( aDecision:
& H. u! f4 S" H7 h& cThe standard allows the use of a single fuse and therefore, under CB rules this is accepted.
Explanation:
Where a supply is not polarised then equipment employing earthing for protection should be provided with a fuse in both mains conductors.
Evaluators are requested to draw the attention of submittors to this situation and make an informative note in the report as appropriate.
9 q4 v/ N% P' O( C$ t
8 D% [* r% L4 O+ ]

& q5 L/ h/ Y& y3 J) P# x  J