DSH 543AA Representative test Voltage for induction motor-compressors

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IEC60335试验指甲

DSH 543AA 3 ~/ \5 h  \7 C0 [+ G 7 }$ h) P. Y  _5 s, M9 B

Representative test Voltage for induction motor-compressors

4.8.1(3rd)/5.8.1(4th)

60335-1(ed.3) & 60335-1(ed.4) ' t+ y! B9 \8 E6 l# D4 Z

7 h) W# a6 g8 j, `+ r0 AQuestion:
1 W% \  q6 L2 A0 z: u' L9 xFor locked rotor testing of induction motors, is testing at 50 Hz considered more severe than 60 Hz.
/ G0 Q" G; N1 Qtesting, so that locked rotor testing at 50 Hz can be considered representative of testing at 60 Hz?
Proposal (if any):
For induction motors including motor-compressors rated 50 and 60 Hz, with the same rated
voltage(s) at each frequency, locked rotor testing at 50 Hz is considered more unfavorable.
For induction motors including motor-compressors rated 50 and 60 Hz, locked rotor testing at
50 Hz, at the highest rated voltage(s) is considered to be the more unfavorable condition. For
/ L* Q* A0 S: e! }- S! l; minduction motors including motor-compressors rated 60 Hz, locked rotor testing at 50 Hz and
3 i4 K( t# W& I+ frated voltage(s) is considered more unfavorable.

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