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|  DSH 4705 L# `7 Q/ c0 L& X
9 q4 N$ @, o, w! D' _/ f | Abnormal operation Appendix B
$ F5 x0 R1 J2 F4 L f | B19.101 to B19.103
. b- O' H2 Q) d" n5 j. i7 s | 60335-1(ed.2)
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Standard: IEC 60335-1:1976, 2nd Ed.. e: c% R% {3 E
Sub clause: B19.101 to B19.103
# o6 \8 j8 h) i4 x# {1 wSheet No. DSH 470) \8 j+ b; D0 a! r2 z0 i
Subject: Abnormal operation Appendix B
2 }; c3 B# U+ l0 m& PKey words: - electronic controls - electronic components9 ]9 B0 v9 k! R( `( }, T
Decision taken at the 40th CTL meeting 2003
6 c* F R: Z8 O% ]# s3 pQuestion:5 t% M) @# N ^4 m/ [
How are the test results evaluated when testing speed control units for series motors?
! \* E( g8 ]' B, w/ w1 i( |" L3 WRationale:% a5 O' K& x3 [
See question.$ V2 f1 n5 r1 T& J' _
Decision:
: k+ n% m7 k9 U/ A) |' V1 ` o3 qRapid reversal of the motor rotation and jumping of the appliance during short-circuiting of
. B1 {5 V3 c$ ethe electronic control is checked during 1 complete cycle. The fault is introduced from the4 g) d& X: | v2 v; e
beginning. The jumping is judged for the possible mechanical risk. After the test the: u4 n$ Y, _+ a7 P2 `
appliance is checked for consequential faults or breaks.
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