前言本行业标准《电动工具换向器》是关于电动工具主要部件—换向器的基础标准。本标准是对ZB K64 014-89《电动工具换向器》的第一次修订。附录A、附录B和附录C均为本标准的附录。本标准自实施之日起,代替ZB K64 014-89《电动工具换向器》。本标准采用和参考了下列标准: Preface The industry standard “Power Tools Commutator” is the basic standard for the main components of power tools - the commutator. This standard is the first revision of the ZB K64 014-89 “power tool commutator.” Appendix A, Appendix B and Appendix C are appendix of this standard. This standard from the date of implementation, instead of ZB K64 014-89 “power tools commutator.” This standard uses and references the following criteria: