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|  DSH 470
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| Abnormal operation Appendix B3 Q2 Z, ]( ]7 N& U" H0 f6 C/ I
| B19.101 to B19.103
6 a: X( q9 [/ v- e! }/ I | 60335-1(ed.2)6 \! ]. C2 z' G. C2 H
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Standard: IEC 60335-1:1976, 2nd Ed.: p' Y. b5 q# O- X6 s
Sub clause: B19.101 to B19.103$ H" g* A* X! S l4 J4 r
Sheet No. DSH 470' s+ Z$ w! V/ Q2 h
Subject: Abnormal operation Appendix B; i; h/ p1 u' I0 o3 D
Key words: - electronic controls - electronic components" n7 `; _' N5 Q1 G5 f9 f/ {- z! D
Decision taken at the 40th CTL meeting 2003
/ R, j% C# ^( g: E* aQuestion:9 A1 r& V% D) X- P
How are the test results evaluated when testing speed control units for series motors?9 W, K8 A2 P* j% w2 F8 ~0 y
Rationale:
1 J: `7 X4 b) A, m! XSee question.6 u5 A9 k, Y+ b9 s4 \# t9 ~
Decision:
' i% s; y8 g: e1 aRapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
& I( L, Z0 j! Y7 p* Mthe electronic control is checked during 1 complete cycle. The fault is introduced from the" j. {4 ?* [6 x5 N/ w: r: ~
beginning. The jumping is judged for the possible mechanical risk. After the test the6 t+ t; C2 S" l8 H6 U; Q! u& o3 J
appliance is checked for consequential faults or breaks.& ~/ N1 }! C( [9 b
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