1.0.1 This code is formulated with a view to go through with the national technical economic policy to achieve safety and reliability, economic feasibility, state-of-art technology, integral esthetic appearance, and convenience of maintenance and administration in electrical design of civil buildings.
1.0.2 This code is applicable to the electrical design of newly constructed, renovated and extended civil urban buildings, and it is not applicable to the electrical design of civil defense, gas booster station, and filling station.
1.0.3 The electrical design of civil buildings shall embody people oriented concept, take comprehensive treatment for electromagnetic pollution, sound pollution and light pollution to meet the requirement of relevant standards on environmental protection and ensure the environmental safety of habitations.
1.0.4 The equipment level in electrical design of civil buildings shall be in accordance with the functional requirement and serviceability of the engineering.
1.0.5 The electrical design of civil buildings shall adopt mature and virtual energy-saving measures to reduce the electric power consumption.
1.0.6 Products meeting the national current standards shall be selected. And those products eliminated in China are strictly prohibited to be used.
1.0.7 The electrical design of civil buildings shall adopt those new tried and true technologies to enhance the economic benefit and social benefit.
1.0.8 Not only the requirements stipulated in this code, but also those in the current relevant ones of the nation shall be complied with in the electrical design of civil buildings.
Foreword II
1 General provisions 1
2 Terms and code numbers 2
2.1 Terms 2
2.2 Code numbers 6
3 Power supply and distribution system 7
3.1 General provisions 7
3.2 Load grades and power requirements 7
3.3 Power supply and the power supply and distribution system 9
3.4 Selection of voltage and quality of electric power 10
3.5 Load calculation 12
3.6 Reactive compensation 13
4 Distribution substations 15
4.1 General provisions 15
4.2 Station site selection 15
4.3 Selection of distribution transformer 16
4.4 Main connection and selection of electrical apparatus 17
4.5 Mode and arrangement of distribution substation 19
4.6 10 (6) kV distribution equipment 22
4.7 Low voltage distribution equipment 22
4.8 Power condenser devices 23
4.9 Requirements on civil engineering specialty 24
4.10 Requirements on the heating and ventilation and the water supply and drainage specialties 25
5 Relay Protection and Electrical Measurements 27
5.1 General provisions 27
5.2 Relay protection 27
5.3 Electrical measurements 34
5.4 Secondary circuit and central signal device 37
5.5 Control mode, house power supply and operational power supply 40
6 Self-provided Emergency Power Supply 42
6.1 Self-provided emergency diesel generating set 42
6.2 Emergency power supply (EPS) 52
6.3 Uninterrupted power supply (UPS) 53
7 Low voltage power distributions 54
7.1 General provisions 54
7.2 Low-voltage distribution system 54
7.3 Extra-low voltage distribution 56
7.4 Selection of conductor 58
7.5 Selection of low-voltage apparatus 66
7.6 Protection of low-voltage distribution circuit 68
7.7 Electric shock protection of low-voltage distribution system 72
8 Distribution wiring system 79
8.1 General provisions 79
8.2 No-protection-wiring 79
8.3 Wiring with metal conduit 80
8.4 Wiring with flexible metal conduits 81
8.5 Wiring with metal raceway 82
8.6 Wiring with rigid plastic conduit (groove) 83
8.7 Wiring of power cables 84
8.8 Wiring of prefabricated branching cables 90
8.9 Wiring of mineral insulated (MI) cables 91
8.10 Wiring with cable bridge rack 92
8.11 Wiring of enclosed-type bus bars 94
8.12 Wiring in electrical vertical shaft 95
9 Electric apparatus of conventional plant 97
9.1 General provisions 97
9.2 Motor 97
9.3 Transfer system 107
9.4 Elevator, escalator and moving sidewalk 109
9.5 Automatic gate and electric rolling shutter door 111
9.6 Stage electrical equipments 112
9.7 Medical equipments 115
9.8 Equipments at sport venues 116
10 Electrical lighting 119
10.1 General provisions 119
10.2 Quality of lighting 119
10.3 Mode and variety of lighting 121
10.4 The lighting illuminant and light fittings 124
10.5 Luminance level 125
10.6 Lighting energy-efficient 127
10.7 Lighting service 128
10.8 Design requirement of architectural lightings 130
10.9 Building Landscape Lighting 138
11 Lightning protection of civil buildings 141
11.1 General provisions 141
11.2 The lightning protection classification of buildings 141
11.3 Lightning protection measures of Class II lightning protection buildings 143
11.4 Lightning protection measures of Class III lightning protection buildings 146
11.5 Other lightning protection measures 149
11.6 Arrester 152
11.7 Downlead 154
11.8 Earth-electrode network 155
11.9 Lightning preventing electromagnetic impulse 157
12 Safety protections for earthing and special places 164
12.1 General requirements 164
12.2 Earthing forms and basic requirements for low-voltage distribution system 164
12.3 The scope of protective earthing 166
12.4 Grounding requirements and grounding resistance 167
12.5 Grounding grid 170
12.6 The earthing and equipotential bonding of general power equipment 173
12.7 The earthing of electronics and computers 175
12.8 The safety protection at all health facilities 177
12.9 The safety protection in special places 179
13 Automatic fire alarm systems 184
13.1 General requirements 184
13.2 The grading of system protection objects and the division of alarm and detection zone 185
13.3 System design 185
13.4 Integrated fire control 186
13.5 Selection and setting of fire detector and manual pull station 191
13.6 Fire emergency broadcast and fire alarm 191
13.7 Fire telephone 192
13.8 Fire emergency lighting 192
13.9 Mains power supply 195
13.10 The lead selection and laying 198
13.11 Fire duty room and fire control room 200
13.12 Residual current operated alarm system for fire prevention 201
13.13 Earthing 202
14 Security technology systems 203
14.1 General provision 203
14.2 Invasion alarm system 204
14.3 Video security monitoring system 206
14.4 Passageway control system 212
14.5 Electronic patrol system 213
14.6 Parking garage (field) management system 214
14.7 Residence (community) security system 215
14.8 Pipe lying 217
14.9 Monitoring centre 218
14.10 Gang control and system integration 219
15 Cable television and satellite television receiving system 221
15.1 General provisions 221
15.2 CATV system design principle 221
15.3 Receiving antenna 224
15.4 Self-designed front-end 225
15.5 Transmission and distribution network 227
15.6 Satellite television receiving system 232
15.7 Line lying 233
15.8 Power Supply, lightning protection and grounding 234
16 Broadcasting, acoustic irradiation and conference system 235
16.1 General provisions 235
16.2 Broadcasting system 236
16.3 Sound-reinforcement system 238
16.4 Conference system 240
16.5 Equipment selection 241
16.6 Equipment arrangement 243
16.7 Line lying 246
16.8 Control room 248
16.9 Power and grounding 249
17 Echoing signals and information display 251
17.1 General provisions 251
17.2 Design of echoing signals system 251
17.3 Design of information display system 253
17.4 Control of information display unit 256
17.5 Clock system 256
17.6 Equipment selection, line laying and equipment room 258
17.7 Power supply, lightning protection and grounding 259
18 Building equipment monitor system 261
18.1 General requirements 261
18.2 The network architecture of the building equipment monitoring system 262
18.3 The network management layer (central management workstation) 263
18.4 The control network layer (substation) 264
18.5 The field network layer 266
18.6 The software of the building equipment monitoring system 268
18.7 The selection of field meters 271
18.8 The chilled water and cooling water system 273
18.9 The heat exchange system 276
18.10 The heating and ventilation and air conditioning system 277
18.11 Domestic water, reclaimed water and drainage systems 280
18.12 The electrical power supply and distribution system 281
18.13 The public area lighting system 281
18.14 Elevator and escalator system 282
18.15 The energy conservation design of the building equipment monitoring system 282
18.16 Monitoring table 284
18.17 The machine room engineering and lightning protection and earthing 284
19 The computer network system 285
19.1 General requirements 285
19.2 The network design principle 285
19.3 The selection of network topology and transmission medium 286
19.4 The configuration of the network connection devices 287
19.5 The security of the operating system software and network 288
19.6 WAN connection 289
19.7 The network application 290
20 Communications network system 292
20.1 General requirements 292
20.2 The PBX system with digital programmable controlling 292
20.3 The digital programmable controlling dispatch exchange system 298
20.4 Video conferphone system 300
20.5 Wireless communication system 303
20.6 Modern multimedia teaching system 308
20.7 Communication wiring and conduit 314
21 Generic cabling systems 324
21.1 General provisions 324
21.2 System design 324
21.3 System configuration 328
21.4 System index 332
21.5 Equipment room and telecommunication room 333
21.6 Equipments of work area 334
21.7 The selection and lying of cable 335
21.8 Electrical protection and grounding 336
22 Electromagnetic compatibility and electromagnetic environmental sanitation 338
22.1 General provisions 338
22.2 Electromagnetic environmental sanitation 338
22.3 Harmonic prevention and cure of power supply and distribution system 339
22.4 The design of electronic information system EMC 341
22.5 Protection of the power interference 341
22.6 Overvoltage protection of the signal line 341
22.7 Pipeline design 342
22.8 Grounding and equipotent connection 342
23 Electronic information equipment rooms 344
23.1 general requirements 344
23.2 Site selection, design and equipment layout of the apparatus room 344
23.3 Professional requirement for condition of circumstance 347
23.4 Power supply, earthing and electrostatic prevention of the machine room 350
23.5 Fire control and safety 352
24 Heat engineering detection and control of boiler room 353
24.1 General requirements 353
24.2 Selection of self-service instrument 354
24.3 Heat engineering detection and control of boiler room 359
24.4 Auto alarm and coordinated control 361
24.5 Power supply 362
24.6 Instrument board, platform 362
24.7 Instrument control room 363
24.8 Tap, conduit and safety 364
24.9 Selection and laying of cable 365
24.10 Earthing 366
24.11 Computer monitors system of the boiler houses 367
Annex A Major Electrical Load Classification of Civilian Architecture 370
Annex B Illumination standard value of some locations 373
Annex C Calculation of Estimated Frequency and Average Annual Frequency of Lightning Stroke of the Building and Indoor Facilities 375
Annex D Bathroom Partition 379
Annex E Partition of Swimming Pool and Wading Pools 382
Annex F Partition of the Fountain 383
Annex G Calculation of Sound Pressure Level and Required Horsepower for Speaker 384
Annex H Recommend Value of Reverberation Time for All Kinds of Buildings, Calculation and Selection of Cable Specification 386
Annex J Monitoring System DDC of Buildings Equipment 387
Annex K BAS Monitoring Point 389
Annex L channel of generic cabling system and indices of permanent chain circuit 391
Explanation of Wording in this code 395