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IEC/TS 60034-20-1 Ed. 1.0 b:2002
Rotating electrical machines - Part 20-1: Control motors - Stepping motors
Gives the requirements for rotating control motors and describes the appropriate tests. Also gives dimensions and marking information and the details to be provided by the manufacturer in associated data sheets and catalogues. Applicable to rotating stepping motors only.
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International Electrotechnical Commission [iec]