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 9 B% T) O: U1 C, i* K  Y 7 J  y6 N0 o. q$ Q7 o$ l

Abnormal operation Appendix B 9 e6 }$ b4 ?- u4 ^

B19.101 to B19.103 . x% m' O( @/ O  N% g

60335-1(ed.2)

; i( y& Y1 p# r$ I, s0 f$ IStandard: IEC 60335-1:1976, 2nd Ed.
7 X% n* k$ _6 R( L9 Q- b) C4 zSub clause: B19.101 to B19.103
( S" V6 }9 m0 \3 F  j% `) l: Q! {Sheet No. DSH 470
6 \6 R; U: D$ b# ^6 NSubject: Abnormal operation Appendix B
Key words: - electronic controls  - electronic components
Decision taken at the 40th CTL meeting 2003
Question:
$ v! F" Y! i+ s) W$ E; C7 }How are the test results evaluated when testing speed control units for series motors?
- O* v5 C3 a' ^! Q7 Q9 ~Rationale:
See question.
Decision:
& I) _3 @3 g% b0 [Rapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
, x9 Q/ i+ p3 s  ?0 I! d: n' athe electronic control is checked during 1 complete cycle. The fault is introduced from the
- M5 T6 [5 R5 ]  U' R& abeginning. 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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