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|  DSH 470, Z5 F& `; i1 |3 b5 y. h
n, q$ c8 B$ F | Abnormal operation Appendix B
- T. z+ d5 v; c- S | B19.101 to B19.103
2 {8 L+ l3 G) e8 U& r; Z6 Z | 60335-1(ed.2); Q9 l) d0 _' j6 `3 {( A
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Standard: IEC 60335-1:1976, 2nd Ed.
, ^$ S8 j& _# _5 ]: h0 o8 ?Sub clause: B19.101 to B19.103' g7 i0 o2 n! g9 F9 S+ J8 x
Sheet No. DSH 470% e9 k1 I9 c+ P, S* G
Subject: Abnormal operation Appendix B
- S& [# l8 c0 `; f. qKey words: - electronic controls - electronic components) e. N2 T) O+ t$ }- a% I2 |& O
Decision taken at the 40th CTL meeting 2003
: Y m' t3 P. d7 S1 T9 wQuestion:
3 F n8 K1 Q8 K1 t4 qHow are the test results evaluated when testing speed control units for series motors?, G; |! s' B' k. t
Rationale:
) E, A( b& z* }7 k0 X; g/ X" tSee question.
3 ^4 w1 W; m& X, j, JDecision:
# |; ?( v' l% D y. t. a# `* wRapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
X2 ?% ?( g9 a/ a( c8 Lthe electronic control is checked during 1 complete cycle. The fault is introduced from the6 k8 e2 I% B' g$ M* Y4 _9 V; ^
beginning. The jumping is judged for the possible mechanical risk. After the test the4 `" w* v2 a" S" Z2 e% e! d
appliance is checked for consequential faults or breaks.
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