第1.0.1条为了统一电力工程制图方法，保证图面质量，提高制图效率，满足设计、施工、生产和科研的要求，制定本标准。
第1.0.2条本标准适用于下列工程制图：
火力发电厂、变电所和输配电线路的新建、扩建工程；
电力系统规划，电力调度自动化、电力系统继电保护和电力系统通信工程；
水力、地热、风力、核能、潮汐、蓄能、太阳能等发电电气工程。
第1.0.3条电力工程制图除应执行本标准外，尚应符合国家现行有关标准的规定。
第二章一般规定第一节图纸幅面
第2.1.1条图纸幅面(以下简称图幅)和图框尺寸应符合表2丄1的规定及图2丄1的格式。
表2.1.1图纸幅面和图框尺寸(mm)
第2.1.2条图幅的短边不应加长，长边可加长幅面。A0、A2和A4的加长量应为幅面A0长边1/8的倍数。幅面A1 和A3的加长量应为幅面A0短边1/4的倍数。
第2.1.3条图幅分区时，分区数应是偶数，每个分区段长度不宜小于25mm，但不宜大于75mm。分区竖向应用大写拉丁字母自上而下顺序编号，横向应用阿拉伯字母自左至右顺序编号，并应沿图框线外侧书写(图2.1.3)。分区代号应用与该区域相对应的字母和数字表示， 字母在前，数字在后，如A3 、 C4。
Contents
I General Rules 1
Chapter 1 General Provisions 1
Chapter 2 General Requirements 1
Section 1 Drawing Size 1
Section 2 Scale 3
Section 3 Drawing Line 3
Section 4 Application of Graphic Symbol and Signing of Lead Line 5
Section5 Letterform and Letter Writing 6
Section 6 Technical Conditions and Instructions Signing 6
Chapter 3 Representation of Drawing 6
Section 1 Projection Method and View 7
Section 2 Cut Drawing 8
Section 3 Cut 8
Section 4 Cut Representation 9
Section 5 Detail Drawing 10
Section 6 Simplified Representations 11
Section 7 North-stabilized Indicator and Wind Diagram 13
Section 8 Axonometrical Drawing 14
Chapter 4 Signing Methods of Dimension and Other Specifications 16
Section 1 General Requirements of Dimension Signing 16
Section 2 Simplified Singing of Dimension 21
Section 3 Elevation 23
Section 4 Positioning Axis Line 24
Section 5 Medium Flowing Direction Signing 26
II locomotive 26
Chapter 5 Representation of All Kinds of drawings 26
Section 1 Drawing Category 26
Section 2 System Drawing 26
Section 3 Layout 28
Section 4 Piping Installation Drawing 32
Section 5 Equipment Installation Drawing 37
Section 6 Assembly Drawing 39
Section 7 Manufacturing Drawing 39
Chapter 6 Number, Code and Connection Symbols 42
Section 1 Number 42
Section 2 Code 44
Section 3 Connection Symbols 52
Chapter 1 General Provisions
Article 1.0.1 This Standard is formulated with a view to unifying electric power engineering Representation s, guarantee the drawing quality, improve drawing efficiency as well as meet the requirements of design, construction, production and scientific research. Article 1.0.2 This Standard is applicable to the following engineering drawings:
The construction and extension engineering for fossil fuel power plant, substation and transmission and distribution line;
Electric power system planning, dispatch automation in electric power, power system relaying protection and electric power system communication engineering; Electrical engineering for power generations such as hydraulic power, terrestrial heat, air force, nuclear energy ,tide energy, storage and solar energy.
Article1.0.3 The electric power engineering drawings shall not only be carried out with those specified in this standard, but shall also be carried out with relevant regulations of current national and professional standards.
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