/ z( T: H5 u1 \6 @' k! k6 D* T. fStandard: IEC 60335-1:1976, 2nd Ed.' N" g; P( B; j0 w4 _6 ]
Sub clause: B19.101 to B19.103' @& d2 ?/ `$ p# B+ t
Sheet No. DSH 470/ v) ?3 t7 s0 M) @7 t- y" V% t9 M
Subject: Abnormal operation Appendix B6 \/ G5 g1 U1 O2 e7 ]0 h
Key words: - electronic controls - electronic components& q7 W. a {; T3 |, w# b
Decision taken at the 40th CTL meeting 2003 . e3 \: I% G# C/ Y5 \8 dQuestion: 1 n! @2 }: z G/ {" OHow are the test results evaluated when testing speed control units for series motors?0 _1 W! t. S& g; V* X; p2 o! H7 _
Rationale: ; E4 @% y# p* w8 U5 H* lSee question.: g9 m* H1 l S* v
Decision: ) b+ t2 R$ ]8 x& k" z2 gRapid reversal of the motor rotation and jumping of the appliance during short-circuiting of 4 G4 H2 ]5 `9 f- uthe electronic control is checked during 1 complete cycle. The fault is introduced from the , G9 X7 d# x$ A( Ybeginning. The jumping is judged for the possible mechanical risk. After the test the / o% _! }( g2 K* q/ \appliance is checked for consequential faults or breaks.6 x- \+ h4 l% f+ e u" f2 K) R
" c+ P ^% A# ^% _3 F5 j[attach]75862[/attach] 0 o0 S7 x+ P1 M O5 k& C
DSH 4709 x; f/ ?0 a/ @, S9 |