一、标委会组成及工作范围本标委会ＴＣ２７于１９８３年成立，现为第四届，对口国际电工委员会第３技术委员会（ＩＥＣ／ＴＣ３），归口我国电气文件编制（习惯称电气制图）和电气图形符号领域的标准化工作。负责起草电工和相关领域的标准。标委会下设四个分会。本标委会直属 I. Composition of the Committee and Scope of Work The TC27 was established in 1983 and is now the fourth session. It is the counterpart of the 3rd Technical Committee of the International Electrotechnical Commission (IEC/TC3) and is responsible for the preparation of electrical documents in China (used to refer to electrical drawings). Standardization work in the field of electrical and graphical symbols. Responsible for drafting standards for electricians and related fields. The standard committee has four chapters. Directly to this standard committee