BS EN IEC 61936-1:2021 – TC:2022 Edition
$280.87
Tracked Changes. Power installations exceeding 1 kV AC and 1,5 kV DC – AC
| Published By | Publication Date | Number of Pages |
| BSI | 2022 | 306 |
This part of IEC 61936 provides requirements for the design and the erection of electrical power installations in systems with nominal voltages exceeding 1 kV AC and nominal frequency up to and including 60 Hz, so as to provide safety and proper functioning for the use intended. For the purpose of interpreting this document, an electrical power installation is considered to be one of the following: a) substation, including substation for railway power supply; b) electrical power installations on mast, pole and tower, switchgear and/or transformers located outside a closed electrical operating area; c) one (or more) power station(s) located on a single site, the electrical power installation includes generators and transformers with all associated switchgear and all electrical auxiliary systems. Connections between generating stations located on different sites are excluded; d) the electrical system of a factory, industrial plant or other industrial, agricultural, commercial or public premises; e) electrical power installations on offshore facilities for the purpose of generation, transmission, distribution and/or storage of electricity; f) transition towers/poles (between overhead lines and underground lines). The electrical power installation includes, among others, the following equipment: – rotating electrical machines; – switchgear; – transformers and reactors; – converters; – cables; – wiring systems; – batteries; – capacitors; – earthing systems; – buildings and fences which are part of a closed electrical operating area; – associated protection, control and auxiliary systems; – large air core reactor. NOTE 1 In general, equipment standards take precedence over the requirements of this document. This document does not apply to the design and erection of any of the following: – overhead and underground lines between separate electrical power installations; – electrified railway tracks and rolling stock; – mining equipment and installations; – fluorescent lamp installations; – installations on ships according to IEC 60092 (all parts) and offshore units according to IEC 61892 (all parts), which are used in the offshore petroleum industry for drilling, processing and storage purposes; – electrostatic equipment (e.g. electrostatic precipitators, spray-painting units); – test sites; – medical equipment, e.g. medical X-ray equipment. This document does not apply to the design of prefabricated, type-tested switchgear and high voltage/low voltage prefabricated substation, for which separate IEC standards exist. NOTE 2 The scope of this document does not include the requirements for carrying out live working on electrical power installations. NOTE 3 The scope of this document considers safety requirements for HV installations and the influences of HV installations on LV installations. For electrical installations up to 1 kV, IEC 60364 (all parts) applies.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | 30445916 |
| 181 | A-30390186 |
| 182 | undefined |
| 186 | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications |
| 189 | English CONTENTS |
| 195 | FOREWORD |
| 198 | INTRODUCTION |
| 199 | 1 Scope |
| 200 | 2 Normative references |
| 202 | 3 Terms and definitions 3.1 General definitions |
| 204 | 3.2 Definitions concerning electrical power installations |
| 205 | 3.3 Definitions concerning types of electrical power installations 3.4 Definitions concerning safety measures against electric shock |
| 206 | 3.5 Definitions concerning clearances |
| 208 | 3.6 Definitions concerning control and protection 3.7 Definitions concerning earthing |
| 212 | 4 Fundamental requirements 4.1 General 4.1.1 General requirements |
| 213 | 4.1.2 Agreements between supplier and user |
| 214 | Tables Table 1 – References to subclauses where agreement between supplier and user is required |
| 215 | 4.2 Electrical requirements 4.2.1 Methods of neutral earthing 4.2.2 Voltage classification 4.2.3 Current in normal operation 4.2.4 Short-circuit current |
| 216 | 4.2.5 Rated frequency 4.2.6 Corona 4.2.7 Electric and magnetic fields |
| 217 | 4.2.8 Overvoltages 4.2.9 Harmonics 4.2.10 Electromagnetic compatibility 4.3 Mechanical requirements 4.3.1 General |
| 218 | 4.3.2 Tension load 4.3.3 Erection load 4.3.4 Ice load 4.3.5 Wind load 4.3.6 Switching forces 4.3.7 Short-circuit forces 4.3.8 Loss of conductor tension 4.3.9 Seismic loads |
| 219 | 4.3.10 Dimensioning of structures 4.4 Climatic and environmental conditions 4.4.1 General 4.4.2 Normal conditions |
| 221 | 4.4.3 Special conditions |
| 222 | 4.5 Particular requirements 4.5.1 Effects of small animals and micro-organisms 4.5.2 Noise level 4.5.3 Transport 5 Insulation 5.1 General |
| 223 | 5.2 Selection of insulation level 5.2.1 General 5.2.2 Consideration of methods of neutral earthing 5.2.3 Consideration of rated withstand voltages 5.3 Verification of withstand values |
| 224 | 5.4 Minimum clearances of live parts 5.4.1 General 5.4.2 Minimum clearances in voltage range I 5.4.3 Minimum clearances in voltage range II |
| 225 | Table 2 – Minimum clearances in air – Voltage range I (1 kV < Um ≤ 245 kV) |
| 226 | Table 3 – Minimum clearances in air – Voltage range II (Um > 245 kV) |
| 227 | 5.5 Minimum clearances between parts under special conditions 5.6 Tested connection zones 6 Electrical equipment 6.1 General requirements 6.1.1 Electrical equipment safety 6.1.2 User safety |
| 228 | 6.2 Specific requirements 6.2.1 Switching devices 6.2.2 Power transformers and reactors |
| 229 | 6.2.3 Prefabricated type-tested switchgear 6.2.4 Instrument transformers |
| 230 | 6.2.5 Surge arresters 6.2.6 Capacitors |
| 231 | 6.2.7 Line traps 6.2.8 Insulators 6.2.9 Insulated cables |
| 234 | 6.2.10 Conductors and accessories 6.2.11 Rotating electrical machines |
| 235 | 6.2.12 Generating units 6.2.13 Generating unit main connections 6.2.14 Static converters |
| 236 | 6.2.15 Fuses 6.2.16 Electrical and mechanical interlocking 7 Electrical power installations 7.1 General 7.1.1 Common requirements |
| 237 | 7.1.2 Circuit arrangement |
| 238 | 7.1.3 Documentation 7.1.4 Transport routes |
| 239 | 7.1.5 Aisles and access areas Figure 1 – Minimum approach distance for transport within closed electrical operating areas |
| 240 | 7.1.6 Lighting 7.1.7 Operational safety 7.1.8 Labelling 7.2 Outdoor electrical power installations of open design 7.2.1 General Figures |
| 241 | 7.2.2 Protective barrier clearances 7.2.3 Protective obstacle clearances |
| 242 | 7.2.4 Boundary clearances Figure 2 – Protection against direct contact by protective barriers or protective obstacles within closed electrical operating areas |
| 243 | 7.2.5 Minimum height over access area Figure 3 – Boundary distances and minimum height at the external fence/wall |
| 244 | 7.2.6 Clearances to buildings Figure 4 – Minimum heights within closed electrical operating areas |
| 245 | Figure 5 – Approaches with buildings within closed electrical operating areas |
| 246 | 7.2.7 External fences or walls and access doors 7.3 Indoor electrical power installations of open design |
| 247 | 7.4 Installation of prefabricated type-tested switchgear 7.4.1 General 7.4.2 Additional requirements for gas-insulated metal-enclosed switchgear |
| 249 | 7.5 Requirements for buildings 7.5.1 General 7.5.2 Structural provisions |
| 250 | 7.5.3 Rooms for switchgear 7.5.4 Maintenance and operating areas 7.5.5 Doors |
| 251 | 7.5.6 Draining of insulating liquids 7.5.7 Heating, ventilation and air conditioning (HVAC) |
| 252 | 7.5.8 Buildings which require special consideration 7.6 High voltage/low voltage prefabricated substations 7.7 Electrical power installations on mast, pole and tower 8 Safety measures 8.1 General |
| 253 | 8.2 Protection against direct contact 8.2.1 General 8.2.2 Measures for protection against direct contact |
| 254 | 8.2.3 Protection requirements |
| 255 | 8.3 Means to protect persons in case of indirect contact 8.4 Means to protect persons working on or near electrical power installations 8.4.1 General 8.4.2 Electrical equipment for isolating installations or apparatus |
| 256 | 8.4.3 Devices to prevent reclosing of isolating devices 8.4.4 Devices for determining the de-energized state 8.4.5 Devices for earthing and short-circuiting |
| 257 | 8.4.6 Equipment acting as protective barriers against adjacent live parts |
| 258 | 8.4.7 Storage of personal protection equipment 8.5 Protection from danger resulting from arc fault 8.6 Protection against direct lightning strokes |
| 259 | 8.7 Protection against fire 8.7.1 General |
| 260 | 8.7.2 Transformers, reactors |
| 261 | Table 4 – Guide values for outdoor transformer clearances |
| 262 | Figure 6 – Separating walls between transformers |
| 264 | Figure 7 – Fire protection between transformer and building |
| 265 | Table 5 – Minimum requirements for the installation of indoor transformers |
| 266 | 8.7.3 Cables 8.7.4 Other equipment with flammable liquid |
| 267 | 8.8 Protection against leakage of insulating liquid and SF6 8.8.1 Insulating liquid leakage and subsoil water protection Figure 8 – Example for small transformers without gravel layer and catchment tank |
| 268 | Figure 9 – Sump with integrated catchment tank |
| 269 | 8.8.2 SF6 leakage Figure 10 – Sump with separate catchment tank Figure 11 – Sump with integrated common catchment tank |
| 270 | 8.8.3 Failure with loss of SF6 and its decomposition products 8.9 Identification and marking 8.9.1 General |
| 271 | 8.9.2 Information plates and warning plates 8.9.3 Electrical hazard warning 8.9.4 Electrical power installations with incorporated capacitors 8.9.5 Emergency signs for emergency exits 8.9.6 Cable identification marks 9 Protection, automation and auxiliary systems 9.1 Protection systems |
| 272 | 9.2 Automation systems |
| 273 | 9.3 Auxiliary systems 9.3.1 AC and DC supply circuits |
| 274 | 9.3.2 Compressed air systems |
| 275 | 9.3.3 SF6 gas handling plants 9.3.4 Hydrogen handling plants 9.4 Basic rules for electromagnetic compatibility of control systems 9.4.1 General |
| 276 | 9.4.2 Electrical noise sources in electrical power installations 9.4.3 Measures to be taken to reduce the effects of high frequency interference 9.4.4 Measures to be taken to reduce the effects of low frequency interference |
| 277 | 9.4.5 Measures related to the selection of electrical equipment |
| 278 | 9.4.6 Other possible measures to reduce the effects of interference 10 Earthing systems 10.1 General 10.2 Fundamental requirements 10.2.1 Safety criteria |
| 279 | 10.2.2 Functional requirements 10.2.3 High and low voltage earthing systems |
| 280 | 10.3 Design of earthing systems 10.3.1 General Table 6 – Minimum requirements for interconnection of low-voltage and high-voltage earthing systems based on EPR limits |
| 281 | 10.3.2 Power system faults 10.3.3 Lightning and transient overvoltages |
| 282 | 10.4 Construction work on earthing systems 10.5 Measurements 10.6 Maintainability 10.6.1 Inspections 10.6.2 Measurements Figure 12 – Permissible touch voltage UTp |
| 283 | 11 Inspection and testing 11.1 General 11.2 Verification of specified performances |
| 284 | 11.3 Tests during installation and commissioning 11.4 Trial running 12 Operation and maintenance manual |
| 285 | Annexes Annex A (informative) Values of rated insulation levels and minimum clearances based on current practice in some countries Table A.1 – Values of rated insulation levels and minimum clearances in air for 1 kV < Um ≤ 245 kV for highest voltage for installation Um not standardized by the IEC based on current practice in some countries |
| 286 | Table A.2 – Values of rated insulation levels and minimum clearances in air for 1 kV < Um ≤ 245 kV for highest voltage for installation Um not standardized by the IEC based on current practice in some countries |
| 287 | Table A.3 – Values of rated insulation levels and minimum clearances in air for Um > 245 kV for highest voltages for installation Um not standardized by the IEC based on current practice in some countries |
| 288 | Annex B (normative) Method of calculating permissible touch voltages |
| 289 | Annex C (normative) Permissible touch voltage according to IEEE 80 Figure C.1 – Permissible touch voltage UTp according to IEEE 80 |
| 290 | Annex D (normative) Earthing system design flow chart |
| 291 | Annex E (informative) Protection measures against direct lightning strokes E.1 General E.2 Shield wires E.3 Lightning rods |
| 292 | Figure E.1 – Single shield wire Figure E.2 – Two shield wires |
| 293 | Figure E.3 – Single lightning rod Figure E.4 – Two lightning rods |
| 294 | Annex F (informative) Considerations of design for safe working |
| 295 | Figure F.1 – Working clearances within closed electrical operating areas |
| 296 | Annex G (informative) List of notes concerning particular conditions in certain countries |
| 302 | Bibliography |
Related products
-
BS EN IEC 61936-2:2023 – TC
Tracked Changes. Power installations exceeding 1 kV AC and 1,5 kV DC – DC Published…
