IEC 60320-2-1 pdf download.Appliance couplers for household and similar general purposes
Replacement: This part of IEC 60320 is applicable to special purpose appliance couplers for household sewing machines. These sewing machine couplers are for a.c. only and have a rated voltage not exceeding 250 V and a rated current not exceeding 2,5 A. The sewing machine couplers may include two or more contacts depending on the control components or circuitry required to operate the sewing machine and may be with or without earthing contact.
2 Normative references
This clause of IEC 60320-1 applies with the following additions: The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60320. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 60320 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60083:1997, Plugs and socket-outlets for domestic and similar general use standardized in member countries of IEC IEC 60320-1:1994, Appliance couplers for household and similar general purposes – Part 1: General requirements IEC 60335-2-28:1994, Safety of household and similar electrical appliances – Part 2: Particular requirements for sewing machines
This clause of IEC 60320-1 applies with the following addition: 3.101 sewing machine coupler appliance coupler used exclusively on sewing machines It consists of two parts: – the sewing machine connector, which is the part integral with, or intended to be attached to, the cord or cords; – the sewing machine inlet, which is the part integrated in or incorporated in the sewing machine or its control or intended to be fixed to it.
In sewing machine connectors, the socket contacts shall be recessed so as to comply with the distances specified in clause 26. This dimension shall be equal, if possible, to the dimension specified on the standard sheet in IEC 60320-1 for a similar connector. NOTE 2 A sewing machine connector with entry holes having a diameter or a width not exceeding 3 mm and recessed not less than 3 mm, as measured from the engagement face, is considered to be acceptable; see Standard Sheets C 1, C 5 and C 7 of IEC 60320-1. NOTE 3 A more precise relationship between the dimensions of the entry hole and the distance from the socket contact to the engagement face is under consideration. The internal length of the socket contact shall be such that the contact overlap between the socket contact and the corresponding pin of the sewing machine inlets is not less than 4 mm. Additional subclause: (following 9.6): 9.101 Sewing machine couplers shall not be interchangeable with connectors or appliance inlets complying with the standard sheets in IEC 60320-1 nor with plugs or socket-outlets for household and similar purposes (e.g. those complying with IEC 60083).
10 Protection against electric shock This clause of IEC 60320-1 applies. 11 Provision for earthing This clause of IEC 60320-1 applies. 12 Terminals and terminations This clause of IEC 60320-1 applies with the following additions: 12.1.3 Replacement: Rewirable sewing machine connectors shall have terminals which can accept flexible conductors having a nominal cross-sectional area of 0,75 mm 2 and 1 mm 2 . For screw and stud terminals the diameter D is 1,4 mm, see standard sheet C27 of IEC 60320-1. Compliance is checked by inspection, by measurement and by fitting conductors having cross- sectional areas of 0,75 mm 2 and 1 mm 2 . Additional subclause (following 12.1.3): 12.101 The terminal(s) in rewirable sewing machine connectors to which more than one conductor shall be connected, shall be checked with the number of conductors to be connected. 12.2.4 Addition: For terminals of size 0, each conductor is subjected to a pull of 30 N.