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 / t6 z! E3 K; W1 d

Abnormal operation Appendix B 5 @( ^% v$ H8 D6 U

B19.101 to B19.103 0 m$ @9 v5 U) o/ t6 e

60335-1(ed.2)

Standard: IEC 60335-1:1976, 2nd Ed.
: w- o9 ~$ W' Y! j2 U# ]Sub clause: B19.101 to B19.103
' E: i4 j) _$ k1 }7 M7 ^9 O5 SSheet No. DSH 470
$ `* x# J/ F" E' \  ?Subject: Abnormal operation Appendix B
Key words: - electronic controls  - electronic components
Decision taken at the 40th CTL meeting 2003
9 q( d+ z/ l0 B) _; ]" aQuestion:
2 m$ O1 k: {4 I% iHow are the test results evaluated when testing speed control units for series motors?
* H& Y' S& r' c* D$ ^Rationale:
% ~! K* Q+ g' h' z8 d6 H7 OSee question.
) C( ~1 E4 E( t. _Decision:
Rapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
" l3 F: b/ m5 Q  Bthe 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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