DSH 470 Abnormal operation Appendix B

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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   F+ g% {( }1 B4 O2 \5 C

B19.101 to B19.103   L. q# o' q5 V+ _1 ?4 R  b

60335-1(ed.2) ; a1 Q* R6 o) p& S

Standard: IEC 60335-1:1976, 2nd Ed.
Sub clause: B19.101 to B19.103
Sheet No. DSH 470
Subject: Abnormal operation Appendix B
& D, i. z* f/ m$ P" rKey words: - electronic controls  - electronic components
Decision taken at the 40th CTL meeting 2003
/ o: U% R& I$ R0 v. ZQuestion:
. s: ~( ]. ]/ F; q. K, f2 SHow are the test results evaluated when testing speed control units for series motors?
% K9 Y7 ]7 e2 v2 bRationale:
5 o6 e+ O0 h! M+ W& L: y% M+ k" X6 ?See question.
, u* W5 S/ f0 C, ZDecision:
6 V9 D7 x6 l8 Z7 ORapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
; i" C7 v' r6 m4 g, g6 R; zthe 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
8 Z/ J) |4 F: ~9 ^- T/ B2 P/ Nappliance is checked for consequential faults or breaks.

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