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 ) ~- E  o4 j) o  A

B19.101 to B19.103 2 t' R% {2 ^$ B

60335-1(ed.2) , m" w* E. W3 u) n' I4 `, T/ ?# i

Standard: IEC 60335-1:1976, 2nd Ed.
Sub clause: B19.101 to B19.103
, i- H9 J+ `9 ?7 wSheet No. DSH 470
4 A. L6 u9 e: n- k( z% c3 F3 w" S) oSubject: Abnormal operation Appendix B
, z/ B- @3 U9 X- e5 [Key words: - electronic controls  - electronic components
Decision taken at the 40th CTL meeting 2003
0 j7 Y" c2 V: c* \* e) }  }+ t5 l! sQuestion:
8 x. Z. X/ [+ o& ^' `: F7 a) V( |" E3 dHow are the test results evaluated when testing speed control units for series motors?
Rationale:
3 K# q8 r" ?% G2 E5 @  XSee question.
4 i  h7 k/ z& q8 Y2 @) s* cDecision:
' `  m4 j2 E2 NRapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
the electronic control is checked during 1 complete cycle. The fault is introduced from the
) i) Y1 H0 `4 p3 k- r0 T; Vbeginning. The jumping is judged for the possible mechanical risk. After the test the
- q8 z" P; `8 H, Y! n& n7 oappliance is checked for consequential faults or breaks.


7 `$ D$ C9 t6 `+ Z( r