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BS 4491-2.1(1990) : 1990被替代
APPLIANCE COUPLERS FOR HOUSEHOLD AND SIMILAR GENERAL PURPOSES - SPECIFICATION OF REQUIREMENTS FOR INDIVIDUAL TYPES OF COUPLER - SEWING MACHINE COUPLERS
出版：British Standards Institution
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基本信息
標(biāo)準(zhǔn)編號： BS 4491-2.1(1990) : 1990
標(biāo)準(zhǔn)類別：Standard
出版單位：British Standards Institution
標(biāo)準(zhǔn)頁數(shù)：0
標(biāo)準(zhǔn)簡介
Describes special purpose appliance couplers for household sewing machines for a.c. only. 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.
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