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 8 x$ O& ^, n1 X  W

Abnormal operation Appendix B

B19.101 to B19.103 ! o$ y; q. j- W) f( a

60335-1(ed.2) ) N  r- ]) W# r) Z, O0 W- u

" E! [! `6 Y8 b9 Z, B" }0 XStandard: IEC 60335-1:1976, 2nd Ed.
Sub clause: B19.101 to B19.103
+ G6 ^8 j6 g" q, P2 u$ W) aSheet No. DSH 470
Subject: Abnormal operation Appendix B
* N0 B+ x6 B6 l: `; HKey words: - electronic controls  - electronic components
1 f1 a' y5 b/ q* n$ @Decision taken at the 40th CTL meeting 2003
Question:
How are the test results evaluated when testing speed control units for series motors?
% T3 w, R( ], I7 w0 e0 j0 ^1 DRationale:
See question.
0 J) }. G0 \5 g) |7 R( HDecision:
Rapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
" r+ m7 P& W5 D+ kthe 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
' C% q, [; I% P% |/ g) l# d& Lappliance is checked for consequential faults or breaks.

# Q4 j/ Y+ i4 o3 e. |