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|  DSH 470" O! C; k8 y& d+ p1 D; Q0 I
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| Abnormal operation Appendix B
% T9 K3 v4 h2 x/ J | B19.101 to B19.103
- s1 z, z4 \2 t# k6 _3 ~+ j | 60335-1(ed.2)
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Standard: IEC 60335-1:1976, 2nd Ed./ Z. R: }' v" r; x3 S
Sub clause: B19.101 to B19.103
* |% y, m% Y: J* HSheet No. DSH 4706 Y9 }! a- s2 S2 A" i
Subject: Abnormal operation Appendix B
$ W7 Z4 N7 ^ T; O% W KKey words: - electronic controls - electronic components _$ a( H ]% \$ j/ P
Decision taken at the 40th CTL meeting 20035 k# `9 ^) X6 s; U- v3 H6 V
Question:
) a" O/ B8 [1 s jHow are the test results evaluated when testing speed control units for series motors?
3 r& S- q8 }7 x9 L( }Rationale: l% H8 U: {/ f" l. _' Y
See question.
; i b% w% [; m4 ]Decision:
& V( e" F9 \8 }$ S, ERapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
# j& W$ R! N* |' `; N: e7 Kthe electronic control is checked during 1 complete cycle. The fault is introduced from the: ?4 Q0 N: R/ ?0 K
beginning. The jumping is judged for the possible mechanical risk. After the test the( U8 p4 ?9 Q' z1 R* D5 l
appliance is checked for consequential faults or breaks.
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