DSH 470 Abnormal operation Appendix B

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 470

Abnormal operation Appendix B

B19.101 to B19.103 % G4 I$ K. O6 ^' O) r

60335-1(ed.2) + V: K/ l7 u% }# p, L# d! {+ b

- }- c/ F0 k/ J4 `5 x0 U$ v) DStandard: IEC 60335-1:1976, 2nd Ed.
5 W/ l" u3 m5 U' S, [3 NSub clause: B19.101 to B19.103
Sheet No. DSH 470
! o8 ^& \6 \; z9 A1 P6 G( b3 m+ CSubject: Abnormal operation Appendix B
Key words: - electronic controls  - electronic components
Decision taken at the 40th CTL meeting 2003
Question:
How are the test results evaluated when testing speed control units for series motors?
. \  z+ x0 V  R5 {  `8 }8 ZRationale:
' P& z5 j/ ?; h, Z" G; @0 t7 I( pSee question.
! P3 y4 }2 A# u. oDecision:
Rapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
the electronic control is checked during 1 complete cycle. The fault is introduced from the
6 g9 \+ t( S! h/ J# B  |8 ybeginning. The jumping is judged for the possible mechanical risk. After the test the
2 `4 p7 H2 ~! `0 B5 Aappliance is checked for consequential faults or breaks.


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