The book consists of 4 parts and 19 chapters. The first part is the basics of electrical design (Chapters 1-2), which introduces the classification, drawing standards, electrical symbols, reading and other basic knowledge of electrical engineering drawings; the second part is AutoCAD electrical (Chapters 3-9), which explains the basic operation of AutoCAD and the method of drawing mechanical, weak current and other electrical engineering drawings step by step; the third part is Tianzheng electrical (Chapters 10-17), which explains the various functions and operations of Tianzheng Electrical 2014, such as floor plan, system diagram, electrical calculation, text and table, dimension and symbol annotation, file layout, etc.; the fourth part is project practice (Chapters 18-19), which accumulates practical work experience through civil building and lightning protection and grounding engineering drawing cases. This book comes with a DVD multimedia learning disc, equipped with high-definition voice and video teaching of relevant examples in the book, to double the interest and efficiency of learning. This book has a clear structure, in-depth and detailed explanations, and is highly targeted and practical. It can be used as a textbook for related majors in colleges, technical secondary schools, training schools, and other related majors, and can also be used as a professional guidance textbook for AutoCAD and Tianzheng Electrical beginners and enthusiasts to learn AutoCAD and Tianzheng Electrical. It is also a rare reference manual for professional and technical personnel. Chapter 1 Introduction to electrical engineering drawings 1.1 Characteristics and classification of electrical engineering drawings 2 1.1.1 Characteristics of electrical engineering drawings 2 1.1.2 Classification of electrical engineering drawings 2 [1] 1.2 Drawing standards for electrical engineering drawings 6 1.2.1 Drawing sheet, drawing frame and title bar 6 1.2.2 Drawing sheet division 7 1.2.3 Drawing scale, line type and font 8 1.2.4 Elevation and orientation 9 1.2.5 Positioning axis 9 1.2.6 Detailed drawing index mark and detailed drawing mark 10 1.3 Basic representation methods of electrical drawings 12 1.3.1 Representation methods of electrical circuits 12 1.3.2 Representation methods of electrical components 13 1.3.3 Representation methods of electrical component contact positions and working states 14 1.4 Representation methods of connecting lines in electrical drawings 15 1.4.1 General representation methods of connecting lines 15 1.4.2 Continuous representation and interrupted representation of connecting lines 17 1.5?Composition and classification of electrical graphic symbols 19 1.5.1?Composition of electrical graphic symbols 19 1.5.2?Classification of electrical graphic symbols 19 1.5.3?Common graphic symbols for electrical equipment 20 1.5.4?Common text symbols in electrical drawings 20 1.6?Text annotation of electrical construction drawings 23 1.6.1?Representation of insulated wires and cables 23 1.6.2?Text annotation of lines 27 1.6.3?Text annotation of power and lighting distribution equipment 28 1.6.4?Text annotation of electrical equipment 29 1.6.5?Text annotation of switches and fuses 29 1.6.6?Text annotation of lighting fixtures 29 1.6.7?Text annotation of lighting transformers 30 Chapter 2?Reading of electrical construction drawings 2.1?Overall reading method of electrical construction drawings 32 2.1.1?Methods for reading electrical construction drawings 32 2.1.2?Basic steps for reading electrical construction drawings 34 2.2?Composition of building electrical engineering drawings 35 2.2.1?Drawing catalog 35 2.2.2?Design instructions 35 2.2.3?Legend 35 2.2.4?System diagram 36 2.2.5?Plane diagram 36 2.2.6?Equipment component list 36 2.2.7?Wiring diagram or wiring table 37 2.3?Basic knowledge of power transformation and distribution engineering and reading of construction drawings 37 2.3.1?Basic knowledge of power transformation and distribution engineering 37 2.3.2?Reading of construction drawings of power transformation and distribution engineering 43 2.4?Reading of power and lighting engineering drawings 45 2.4.1?Reading methods of power distribution system diagrams 45 2.4.2?Reading of power distribution plan drawings 45 2.4.3?Basic methods of reading lighting engineering drawings 46 2.4.4?Reading of electrical lighting plan drawings 46 2.5?Basic knowledge of weak current engineering and reading of construction drawings 48 2.5.1 Classification of weak current engineering 48 2.5.2 Reading of automatic fire alarm and linkage control engineering drawings 49 2.5.3 Reading of telephone communication system engineering drawings 51 2.5.4 Reading of construction drawings of integrated wiring system 51 Chapter 3 Basic knowledge of AutoCAD 3.1 Installing and starting AutoCAD2014 54 3.1.1 System requirements of AutoCAD2014 54 3.1.2 Installing AutoCAD2014 54 3.1.3 Starting AutoCAD2014 56 3.1.4 Exiting AutoCAD2014 56 3.2 Understanding the AutoCAD2014 working interface 57 3.2.1 Menu browser 57 3.2.2 Title bar 58 3.2.3 Quick access toolbar 58 3.2.4 Menu bar 58 3.2.5 Toolbar 59 3.2.6 Ribbon 60 3.2.7 Drawing Area 60 3.2.8 Cross Cursor 60 3.2.9 Command Line and Text Window 61 3.2.10 Status Bar 61 3.3 Setting the AutoCAD2014 Drawing Environment 63 3.3.1 Setting the Workspace 63 3.3.2 Setting the Drawing Limits 64 3.3.3 Setting the Drawing Units 65 3.3.4 Setting the Cross Cursor Size 66 3.3.5 Setting the Drawing Area Color 67 3.3.6 Setting the Right Mouse Button Function 67 3.4 Managing AutoCAD Graphics Files 68 3.4.1 Creating a New Graphics File 68 3.4.2 Saving a Graphics File 69 3.4.3 Opening a Graphics File 71 3.4.4 Encrypting a Graphics File 71 3.4.5 Closing a Graphics File 73 3.4.6 Exporting a File 74 3.4.7 Restoring a Backup File 75 Chapter 4 Two-dimensional Graphics Drawing 4.1 Creating Point and Line Objects 78 4.1.1 Setting Point Style 78 4.1.2 Creating a Single Point 78 4.1.3 Practical - Drawing a Single Point 78 4.1.4 Creating Multiple Points 78 4.1.5 Practical - Drawing Multiple Points 79 4.1.6 Creating Points with a Constant Number of Divisions 79 4.1.7 Practical - Drawing a Equipment Material Table 80 4.1.8 Creating Points with a Constant Distance of Uniform Distances 80 4.1.9 Practical - Drawing a Triple Switch 81 4.2 Drawing Lines 82 4.2.1 Drawing a Straight Line 82 4.2.2 Practical - Drawing a Single-Tube Fluorescent Lamp 82 4.2.3 Drawing a Ray 83 4.2.4 Drawing a Construction Line 83 4.2.5 Drawing an Arc 84 4.2.6 Practical - Drawing a Doorbell 85 4.2.7 Drawing an Elliptical Arc 86 4.3 Draw a closed figure 87 4.3.1 Draw an ellipse 87 4.3.2 Draw a circle 87 4.3.3 Draw a ring 88 4.3.4 Draw a rectangle 88 4.3.5 Draw a polygon 89 4.3.6 Practical application - Draw a triangle starter 90 4.4 Draw a polyline 91 4.4.1 Draw a polyline 91 4.4.2 Practical application - Draw a double-tube fluorescent lamp 91 4.5 Draw a multiline 92 4.5.1 Set the multiline style 92 4.5.2 Draw a multiline 92 4.5.3 Practical application - Draw a window 93 4.5.4 Practical application - Draw a partition wall 94 4.5.5 Edit a multiline 94 4.6 Create a spline 95 4.7 Create a pattern fill object 95 4.7.1 Create a pattern fill 95 4.7.2 Practice - Drawing a switch box 96 4.7.3 Editing pattern fill 97 4.7.4 Practice - Drawing a variety of power distribution boxes 97 Chapter 5 Two-dimensional graphics editing 5.1 How to select an object 100 5.1.1 Click 100 5.1.2 Window selection 100 5.1.3 Window intersection selection 101 5.1.4 Column selection 101 5.1.5 Encircle 101 5.1.6 Encircle intersection 102 5.1.7 Quick selection 103 5.2 Copy graphics 103 5.2.1 Copy 103 5.2.2 Practice - Copy 104 5.2.3 Offset 104 5.2.4 Practice - Drawing a comprehensive wiring distribution frame 105 5.2.5 Mirror 106 5.2.6 Practice - Drawing a TV antenna 107 5.2.7 Array 107 5.2.8 Practice - Arrange Lighting Fixtures 110 5.2.9 Deletion 111 5.2.10 Practice - Clean Up Graphics 111 5.2.11?Practice - Draw the ignition signal generator 112 5.3?Move graphics 114 5.3.1?Move 114 5.3.2?Practice - Draw the rectifier bridge diagram 114 5.3.3?Rotate 115 5.3.4?Practice - Draw the thyristor diode 116 5.4?Graphic deformation 117 5.4.1?Stretch 117 5.4.2?Practice - Stretch graphics 117 5.4.3?Scaling 118 5.4.4?Practice - Scaling graphics 118 5.4.5?Extend 118 5.4.6?Practice - Improve the fuse box graphics 119 5.5?Graphic repair 120 5.5.1?Trimming 120 5.5.2?Practice - Draw the silicon battery diagram 121 5.5.3?Stretch 121 5.5.4?Practice - Improve the electrical system diagram 122 5.5.5 Break at a point 123 5.5.6 Practice - Breaking a graphic 125 5.5.7 Chamfer 126 5.5.8 Practice - Drawing a warning cable sensor 127 5.5.9 Rounded corners 128 5.5.10 Practice - Drawing a rounded rectangle 129 Chapter 6 Dimensions and tables 6.1 Dimensions 132 6.1.1 Composition of dimensioning 132 6.1.2 Understanding the Dimension Style Manager 132 6.1.3 Creating a new dimension style 133 6.1.4 Common dimensioning 135 6.1.5 Advanced dimensioning 139 6.1.6 Editing dimensioning 144 6.1.7 Adjusting dimension spacing 145 6.2 Text annotation 146 6.2.1 Setting text style 146 6.2.2 Creating single-line text 150 6.2.3 Practice - Creating Single-line Text 150 6.2.4 Multi-line Text 151 6.2.5 Practice - Creating Multi-line Text 151 6.2.6 Editing Text 153 6.3 Creating Tables 154 6.3.1 Table Style 154 6.3.2 Practice - Creating Component List Table Style 154 6.3.3 Creating Tables 156 6.3.4 Practice - Creating Component List Tables 156 6.3.5 Editing Tables 158 6.3.6 Practice - Editing Component List Tables 158 6.3.7 Practice - Creating Title Block Tables 159 Chapter 7 Drawing Common Electrical Symbols in AutoCAD 7.1 Drawing Switches, Contacts and Semiconductor Symbols 164 7.1.1 Practice - Drawing Thermal Switches 164 7.1.2 Practice - Drawing Normally Closed Contacts with Delayed Closure When Released 164 7.1.3 Practice - Drawing diodes 166 7.1.4 Practice - Drawing light-emitting diodes 166 7.2 Drawing rheostats, transformers and mutual inductors 167 7.2.1 Practice - Drawing variable resistors 167 7.2.2 Practice - Drawing double-winding transformers 168 7.3 Drawing lamp symbol legends 169 7.3.1 Practice - Drawing waterproof and dustproof lamps 169 7.3.2 Practice - Drawing ceiling lamps 170 7.3.3 Practice - Drawing flower lanterns 171 7.3.4 Practice - Drawing safety lamps 171 7.4 Drawing distribution boxes and wiring racks 172 7.4.1 Practice - Drawing fuse boxes 172 7.4.2 Practice - Drawing knife switch boxes with fuses 172 7.4.3 Practice - Drawing lighting distribution boxes 173 7.4.4 Practice - Drawing a wiring distribution frame 173 7.5 Drawing relay, instrument and socket symbol legend 174 7.5.1 Practice - Drawing a time delay relay 174 7.5.2 Practice - Drawing a thermal relay 175 7.5.3 Practice - Drawing a lightning arrester 176 7.5.4 Practice - Drawing a socket 176 7.5.5 Practice - Drawing a video intercom 178 7.5.6 Practice - Drawing a fire alarm 180 7.5.7 Practice - Drawing a smoke detector 181 7.5.8 Practice - Drawing a humidifier 181 Chapter 8 Mechanical and Electrical Engineering 8.1 Introduction to Mechanical and Electrical Engineering 184 8.2 Drawing a lathe control circuit diagram 184 8.2.1 Setting the drawing environment 185 8.2.2 Drawing a lathe circuit diagram 185 8.2.3 Combination graphics 196 Chapter 9?Weak current electrical engineering 9.1?Introduction to weak current electrical engineering 202 9.2?Drawing TV and telephone floor plans 203 9.2.1?Drawing and inserting legends 203 9.2.2?Drawing connecting lines 206 9.3?Drawing fire alarm and linkage control system diagrams 206 9.3.1?Drawing electrical legends 207 9.3.2?Combined graphics 218 Chapter 10?Basic knowledge of Tianzheng Electrical 10.1?Introduction to Tianzheng Electrical 224 10.1.1?Functions of Tianzheng Electrical 224 10.1.2?Installing Tianzheng Electrical 2014 software 226 10.1.3?Starting Tianzheng Electrical 2014 software 228 10.1.4?Exiting Tianzheng Electrical 2014 software 230 10.2?Drawing exchange 232 10.3?New functions of Tianzheng Electrical 2014 software 232 10.4?Tianzheng Electrical work interface 233 10.4.1 Screen Menu 233 10.4.2 Shortcut Menu 235 10.4.3 Command Line 235 10.4.4 Hot Keys 236 10.4.5 Shortcut Toolbar 236 10.4.6 In-Place Editing 239 10.5 Initial Settings 240 [2] Chapter 11 Floor Plan 11.1 Building 245 11.1.1 Drawing a Grid 245 11.1.2 Drawing a Wall 248 11.1.3 Standard Column 249 11.1.4 Corner Column 250 11.1.5 Doors and Windows 250 11.1.6 Double-Trip Stairs 252 11.1.7 Drawing a Straight Flight 253 11.1.8 Drawing a Curved Flight 254 11.1.9 Balconies 255 11.1.10 Stairs 256 11.1.11 Ramp 256 11.1.12 Any Slope Top 257 11.1.13 Room Outline 258 11.1.14 Search Room 258 11.1.15 Convert to Conditional Map 259 11.1.16 Delete Door and Window Names 261 11.1.17 Thick Line Close 262 11.1.18 Fill Close 262 11.1.19 Actual Combat - Draw Architectural Plan 263 11.2 Plane Equipment 272 11.2.1 Any Arrangement 272 11.2.2 Rectangular Arrangement 274 11.2.3 Sector Arrangement 276 11.2.4 Two Point Uniform Distribution 277 11.2.5 Arc Uniform Distribution 278 11.2.6 Single Distribution Along the Line 279 11.2.7 Uniform distribution along the line 280 11.2.8 Arrangement along the wall 280 11.2.9 Uniform distribution along the wall 281 11.2.10 Arrangement through the wall 282 11.2.11 Arrangement on the door side 283 11.2.12 Equipment replacement 284 11.2.13 Quick replacement 285 11.2.14 Equipment scaling 285 11.2.15 Equipment rotation 286 11.2.16 Equipment flip 287 11.2.17 Equipment movement 287 11.2.18 Equipment erasing 288 11.2.19 Modify attribute word 288 11.2.20 Move attribute word 289 11.2.21 Create equipment 290 11.2.22 Block attributes 291 11.2.23 Practice - Arranging Electrical Components 291 11.3 Wires 296 11.3.1 Plane Wiring 296 11.3.2 Wall Wiring 298 11.3.3 System Wires 299 11.3.4 Any Wire 301 11.3.5 Power Distribution Lead 301 11.3.6 Insert Lead 302 11.3.7 Lead Flip 303 11.3.8 Arrow Turn 303 11.3.9 Edit Wire 303 11.3.10 Wire Up 304 11.3.11 Wire Down 305 11.3.12 Cut Straight Wire 305 11.3.13 Cut Wire 306 11.3.14 Wire Connection 306 11.3.15 Wire Round Corner 307 11.3.16?Wire Breakup 307 11.3.17?Wire Erasure 307 11.3.18? Erase the short slash 307 11.3.19? Line type ratio 308 11.3.20? Practice - drawing connecting lines 308 11.4? Annotation statistics 312 11.4.1? Annotation of lamps 312 11.4.2? Annotation of equipment 313 [2] 11.4.3? Annotation of switches 314 11.4.4? Annotation of sockets 315 11.4.5? Marking the number of wires 315 11.4.6? Changing the number of wires 316 11.4.7? Annotation of wires 317 11.4.8? Annotation of multiple lines 318 11.4.9? Text along the line 319 11.4.10? Circuit number 320 11.4.11? Arrows along the line 320 11.4.12? Lead-out annotation 320 11.4.13? Circuit inspection 321 11.4.14?De-duplication equipment 322 11.4.15?Copy information 323 11.4.16?Device definition 324 11.4.17?Plane statistics 325 11.4.18?Merge statistics 326 11.4.19?Practical application - text annotation 326 11.5?Grounding lightning protection 328 11.5.1?Automatic lightning protection 328 11.5.2?Lightning conductor 329 11.5.3?Grounding wire 330 11.5.4?Insert support card 330 11.5.5?Delete support card 331 11.5.6?Insert lightning conductor 331 11.5.7?Insert grounding electrode 331 11.5.8?Delete grounding electrode 331 11.5.9?Lightning protection settings 332 11.5.10?Insert lightning rod 332 11.5.11 Modify Lightning Rod 333 11.5.12 Delete Lightning Rod 333 11.5.13 Move Single Needle 333 11.5.14 Draw Lightning Line 334 11.5.15 Modify Lightning Line 335 11.5.16 Delete Lightning Line 335 11.5.17 Move Single Needle 335 11.5.18 Mark Radius 336 11.5.19 Mark BX Value 336 11.5.20 Single Lightning Table 337 11.5.21 Double Lightning Table 338 11.5.22 Lightning Section 338 11.5.23 Calculation Book 339 11.5.24 Building Height 339 11.5.25 View 3D 339 11.5.26 Restore 2D 340 11.5.27?Number of lightning strikes per year 340 11.5.28?Practical application - drawing a lightning protection grounding plan 343 11.6?Substation 344 11.6.1?Drawing a bridge 344 11.6.2?Drawing a cable trench 346 11.6.3?Modifying a cable trench 346 11.6.4?Connecting a cable trench 347 11.6.5?Inserting a transformer 347 11.6.6?Inserting an electrical cabinet 348 11.6.7?Marking an electrical cabinet 349 11.6.8?Deleting an electrical cabinet 350 11.6.9?Adding an electrical cabinet 350 11.6.10?Modifying an electrical cabinet 351 11.6.11?Sectional trench 351 11.6.12?Creating a section 353 11.6.13?Icon atlas 353 11.6.14?Point by point marking 353 11.6.15?Distribution size 354 11.6.16?Pebble filling 354 11.6.17?Bridge filling 355 11.6.18?Layer filling pattern 355 11.6.19?Delete filling 356 [2] Chapter 12?System diagram 12.1?System components 358 12.1.1?Component insertion 358 12.1.2?Component copy 358 12.1.3?Component movement 359 12.1.4?Component replacement 359 12.1.5?Component erasing 360 12.1.6?Component width 360 12.1.7?Flip along line 360 12.1.8?Flip sideways 361 12.1.9?Create component 361 12.1.10?Component numbering 362 12.1.11 Component marking 362 12.2 Power system 363 12.2.1 Circuit check 364 12.2.2 System generation 365 12.2.3 Lighting system 367 12.2.4 Power system 368 12.2.5 Low voltage single line 369 12.2.6 Plug in switch cabinet 370 12.2.7 Make switch cabinet 370 12.2.8 Apply table 371 12.2.9 System statistics 372 12.2.10 Dashed box 373 12.2.11 Load calculation 373 12.2.12 Section query 375 12.2.13 Line marking 377 12.2.14 Practice - drawing lighting system diagram 378 12.3 Weak current system 381 12.3.1?Weak current connection 381 12.3.2?Cable TV 381 12.3.3?TV components 381 12.3.4?Distribution and extraction 382 12.3.5?Draw connection points 382 12.3.6?Virtual and real transformation 383 12.3.7?Line ratio 383 12.3.8?Practical application - drawing cable TV system diagram 384 12.4?Fire protection system 386 12.4.1?Fire trunk line 386 12.4.2?Fire protection equipment 387 12.4.3?Equipment connection 388 12.4.4?Temperature and smoke sensors 388 12.4.5?Fire protection statistics 389 12.4.6?Fire protection numbers 389 12.4.7?Make fire protection blocks 390 12.4.8?Fire protection library 391 12.4.9 Practice - Drawing Fire Alarm System Diagrams 391 12.5 Schematic Diagrams 396 12.5.1 Schematic Library 397 12.5.2 Motor Circuits 397 12.5.3 Drawing Multi-Lines 397 12.5.4 Terminal Tables 398 12.5.5 Terminal Plate Wiring 399 12.5.6 Transfer Switches 399 12.5.7 Closure Tables 400 12.5.8 Fixed Terminals 401 12.5.9 Removable Terminals 401 12.5.10 Drawing Connection Points 401 12.5.11 Wiping Connection Points 402 12.5.12 Terminal Labeling 402 12.5.13 Component Numbering 403 12.5.14 Component Labeling 403 12.5.15 Practice - Drawing Power Control Schematics 404 Chapter 13 Electrical Calculations 13.1 Illuminance Calculation 408 13.1.1 Illuminance Calculation Method 408 13.1.2 Illuminance Calculation 408 [2] 13.2 Multi-row Illuminance 413 13.3 Point-by-point Illuminance 414 13.3.1 Point-by-point Illuminance Calculation Method 414 13.3.2 Point-by-point Illuminance Calculation 415 13.4 Load Calculation 417 13.5 Voltage Loss 418 13.5.1 Voltage Loss Calculation Method 419 13.5.2 Voltage Loss Calculation 419 13.6 Short-circuit Current 422 13.6.1 Short-circuit Current Calculation Method 422 13.6.2 Short-circuit Current Calculation Steps 422 13.6.3 Short-circuit Current Calculation 422 13.7 Low-voltage Short Circuit 426 13.7.1 Calculation Range of Low Voltage Short Circuit 426 13.7.2 Calculation of Low Voltage Short Circuit 426 13.8 Reactive Power Compensation 428 13.8.1 Calculation Method of Reactive Power Compensation 428 13.9 Calculation of Annual Lightning Strike 429 13.9.1 Calculation Method of Annual Lightning Strike 429 13.9.2 Calculation of Annual Lightning Strike 429 13.10 Section Query 430 13.10.1 Calculator 431 Chapter 14 Text and Table 14.1 Chinese Character Input and Text Editing 434 14.1.1 Text Font and Aspect Ratio 434 14.1.2 Text Input Method of Tian Zheng 434 14.2 Text Related Commands 435 14.2.1 Text Style 435 14.2.2 Single Line Text 437 14.2.3 Multi-Line Text 437 14.2.4 Professional vocabulary 438 14.2.5 Unified character height 440 14.2.6 Incremental text 440 14.2.7 Corner self-correction 441 14.2.8 Search and replace 441 14.2.9 Text conversion 443 14.2.10 Text merging 443 14.2.11 Quick replacement 443 14.2.12 Traditional and simplified conversion 444 14.3 Table 445 14.3.1. Create a new table 445 14.3.2. Full screen editing 446 14.3.3. Edit table columns 447 14.3.4. Edit table rows 449 14.3.5. Add table rows 450 14.3.6. Delete table rows 451 14.3.7. Split table 451 [2] 14.3.8. Merge tables 452 14.3.9. Edit cells 452 14.3.10. Merge cells 454 14.3.11. Unmerge 454 14.3.12. Increment cells 454 14.3.13. Accumulate cells 455 14.3.14. Copy cells 456 14.3.15. Export to Word 457 14.3.16. Export to Excel 458 14.3.17. Read into Excel 458 Chapter 15 Dimensioning and Symbolic Annotation 15.1 Dimensioning 460 15.1.1 Point-by-Point Annotation 460 15.1.2 Quick Annotation 460 15.1.3 Radius Annotation 461 15.1.4 Diameter Annotation 461 15.1.5 Angle Annotation 462 15.1.6 Arc Length Annotation 462 15.1.7 Changing Text 463 15.1.8 Resetting Text 464 15.1.9 Restoring Text 464 15.1.10 Crop and Extend 465 15.1.11 Canceling Dimension 466 15.1.12 Interrupting Dimension 466 15.1.13 Connecting Dimension 467 15.1.14 Adding Dimension 468 15.1.15 Dimension Conversion 469 15.1.16 Self-adjusting Dimension 469 15.2 Symbol Annotation Commands 469 15.2.1 Single Elevation Annotation 470 15.2.2 Continuous Elevation Annotation 470 15.2.3 Index Symbol 471 15.2.4 Index Drawing Name 473 15.2.5 Section Cut 473 15.2.6 Section Cut 474 15.2.7 Add Break Line 475 15.2.8 Arrow Annotation 475 15.2.9 Lead Annotation 477 15.2.10 Method Annotation 478 15.2.11 Draw Symmetry Axis 478 15.2.12 Draw Compass 479 15.2.13 Draw Cloud Line 480 15.2.14 Drawing Name Annotation 481 Chapter 16 Drawing Tools 16.1 Object Operation 484 16.1.1 Object Query 484 16.1.2 Object Selection 484 16.1.3 Camera Perspective 485 16.2 Move and Copy 486 16.2.1 Free Copy 486 16.2.2 Free Move 487 16.2.3 Shift 488 16.2.4 Free Paste 488 16.3 Drawing Tools 489 16.3.1 Image Change to Monochrome 489 16.3.2 Color Restoration 489 16.3.3 Pattern Add Hole 489 16.3.4 Pattern Subtract Hole 490 16.3.5 Line Pattern 490 16.3.6 Multi-use Delete 491 16.3.7 Eliminate Duplicate Lines 492 16.3.8 Graphic Cut 492 16.3.9 Search Contour 493 16.3.10 Room Copy 494 16.3.11 Block Color Change 494 16.3.12 Virtual Reality Conversion 495 16.3.13 Correct Line Type 495 16.3.14 Thicken Curve 496 Chapter 17 File Layout 17.1 File Interface 498 17.1.1 Open File 498 17.1.2 Graphics Export 498 17.1.3 3D Roaming 499 17.1.4 Transfer Old Version 499 17.2 Layout Command 500 17.2.1 Backup and Disassembly 500 17.2.2 Drawing Comparison 501 17.2.3 Local Comparison 501 17.2.4 Drawing Protection 502 17.2.5 Drawing Unlock 503 17.2.6 3D Section 503 17.2.7 Define Viewport 504 17.2.8 Current Scale 505 17.2.9 Change Scale 505 17.2.10 Change T3 Scale 506 17.2.11 Batch Print 506 17.2.12 Insert Drawing Frame 507 Chapter 18 Civil Building Electrical Engineering 18.1 Introduction to Civil Building Electrical 510 18.2 Draw Building Plan 510 18.3 Draw Equipment Layout Plan 515 18.4 Draw Lighting Plan 522 18.5 Draw Lighting System Diagram 527 Chapter 19 Lightning Protection and Grounding Engineering 19.1 Basic Knowledge of Lightning 534 19.1.1 Characteristics of Lightning 534 19.1.2 Hazards of Lightning 534 19.2 Lightning Protection Level and Lightning Protection Measures for Buildings 534 19.2.1 Lightning Protection Level for Buildings 534 19.2.2?Locations of buildings susceptible to lightning strikes 536 19.2.3?Lightning protection measures for buildings 536 19.3?System grounding forms 539 19.3.1?Classification of grounding 539 19.3.2?TN system 539 19.3.3?TT system 541 19.3.4?IT system 541 19.4?Drawing lightning protection and grounding engineering drawings 54210?Room Copy 494 16.3.11?Block Color Change 494 16.3.12?Virtual and Real Conversion 495 16.3.13?Correct Line Type 495 16.3.14?Bold Curve 496 Chapter 17?File Layout 17.1?File Interface 498 17.1.1?Open File 498 17.1.2?Graph Export 498 17.1.3?3D Roaming 499 17.1.4?Transfer Old Version 499 17.2?Layout Command 500 17.2.1?Backup and Disassembly 500 17.2.2?Drawing Comparison 501 17.2.3?Local Comparison 501 17.2.4?Drawing Protection 502 17.2.5?Drawing Unlock 503 17.2.6?3D Section 503 17.2.7 Define Viewport 504 17.2.8 Current Scale 505 17.2.9 Change Scale 505 17.2.10 Change T3 Scale 506 17.2.11 Batch Print 506 17.2.12 Insert Drawing Frame 507 Chapter 18 Civil Building Electrical Engineering 18.1 Introduction to Civil Building Electrical 510 18.2 Draw Building Plan 510 18.3 Draw Equipment Layout Plan 515 18.4 Draw Lighting Plan 522 18.5 Draw Lighting System Diagram 527 Chapter 19 Lightning Protection and Grounding Engineering 19.1 Basic Knowledge of Lightning 534 19.1.1 Characteristics of Lightning 534 19.1.2 Hazards of Lightning 534 19.2 Lightning Protection Level and Lightning Protection Measures for Buildings 534 19.2.1 Lightning Protection Level for Buildings 534 19.2.2?Locations of buildings susceptible to lightning strikes 536 19.2.3?Lightning protection measures for buildings 536 19.3?System grounding forms 539 19.3.1?Classification of grounding 539 19.3.2?TN system 539 19.3.3?TT system 541 19.3.4?IT system 541 19.4?Drawing lightning protection and grounding engineering drawings 54210?Room Copy 494 16.3.11?Block Color Change 494 16.3.12?Virtual and Real Conversion 495 16.3.13?Correct Line Type 495 16.3.14?Bold Curve 496 Chapter 17?File Layout 17.1?File Interface 498 17.1.1?Open File 498 17.1.2?Graph Export 498 17.1.3?3D Roaming 499 17.1.4?Transfer Old Version 499 17.2?Layout Command 500 17.2.1?Backup and Disassembly 500 17.2.2?Drawing Comparison 501 17.2.3?Local Comparison 501 17.2.4?Drawing Protection 502 17.2.5?Drawing Unlock 503 17.2.6?3D Section 503 17.2.7 Define Viewport 504 17.2.8 Current Scale 505 17.2.9 Change Scale 505 17.2.10 Change T3 Scale 506 17.2.11 Batch Print 506 17.2.12 Insert Drawing Frame 507 Chapter 18 Civil Building Electrical Engineering 18.1 Introduction to Civil Building Electrical 510 18.2 Draw Building Plan 510 18.3 Draw Equipment Layout Plan 515 18.4 Draw Lighting Plan 522 18.5 Draw Lighting System Diagram 527 Chapter 19 Lightning Protection and Grounding Engineering 19.1 Basic Knowledge of Lightning 534 19.1.1 Characteristics of Lightning 534 19.1.2 Hazards of Lightning 534 19.2 Lightning Protection Level and Lightning Protection Measures for Buildings 534 19.2.1 Lightning Protection Level for Buildings 534 19.2.2?Locations of buildings susceptible to lightning strikes 536 19.2.3?Lightning protection measures for buildings 536 19.3?System grounding forms 539 19.3.1?Classification of grounding 539 19.3.2?TN system 539 19.3.3?TT system 541 19.3.4?IT system 541 19.4?Drawing lightning protection and grounding engineering drawings 542
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