This standard specifies the types, basic parameters and dimensions, technical requirements, test methods, inspection rules and markings, packaging, storage, and transportation of single-phase series excited motors (referred to as motors) and auxiliary speed regulators (referred to as speed regulators) for household sewing machines. This standard is applicable to household sewing machine motors and their governors, and single-phase series excited motors and their governors for overlock sewing machines can also be used as a reference. The following normative references are essential for the application of this document. For all dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB 755 Rotating Electrical Machines, Rating and Performance GB/T 4942.1 Degrees of Protection for the Overall Structure of Rotating Electrical Machines (IP Code) Graded GB/T 5171.1 Small Power Motors, Part 1: General Technical Conditions GB/T 8128 Test Methods for Single-phase Series Excitation Motors GB/T 10069.1 Measurement Methods and Limits of Noise from Rotating Electrical Machines Part 1: Measurement Methods for Noise from Rotating Electrical Machines GB 12350 Safety Requirements for Small Power Motors JB/T 8735.2 Rated Voltage 450/750V and Below Rubber Insulated Flexible Wires and Cables, Part 2: General Rubber Sheathed Flexible Cables JB/T10490 Mechanical Vibration and Vibration Measurement for Small Power Motors Measurement methods, evaluations, and limits
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