DSH 470 Abnormal operation Appendix B

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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 ; b0 X2 B3 v0 O9 [' D0 d

Abnormal operation Appendix B ( m1 ?0 K- x& f, {% e

B19.101 to B19.103 . \6 Y" S3 ]9 B' ?- s

60335-1(ed.2) , y8 `7 p2 i2 h6 E* \( Z& r8 c+ ?

Standard: IEC 60335-1:1976, 2nd Ed.
) U: t1 X6 V0 C  k) v) eSub clause: B19.101 to B19.103
Sheet No. DSH 470
* M' X+ n3 O+ ?: ISubject: Abnormal operation Appendix B
Key words: - electronic controls  - electronic components
Decision taken at the 40th CTL meeting 2003
Question:
, E5 X6 x9 I+ t# V& \4 lHow are the test results evaluated when testing speed control units for series motors?
0 Y' b" ?5 R: q$ I( o- mRationale:
: R( F' d* L% l- a: }See question.
Decision:
Rapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
* D1 G9 H. A5 Y: Nthe electronic control is checked during 1 complete cycle. The fault is introduced from the
beginning. The jumping is judged for the possible mechanical risk. After the test the
appliance is checked for consequential faults or breaks.

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