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Summary
Summary
This book surveys some of the techniques available to protect low-voltage electrical and electronic equipment and systems from lightning strikes and other power surges. The book examines the basic discharge processes in air and their effects, through transient electromagnetic field generation and interaction with overhead lines and underground cables. Attention is paid to the use of models for lightning protection and the book focuses on protection techniques based on modelled lightning protection zones. This is then logically developed in a major section on the practical components and applications of protective measures and systems, as well as testing techniques. These are placed in the context of current IEC and VDE standards. The book is highly illustrated with a vast number of photographs as well as system diagrams and tabular matter.
Table of Contents
1 Introduction | p. 1 |
2 Damage due to lightning and surges | p. 5 |
2.1 Damage statistics | p. 5 |
2.2 Examples | p. 10 |
2.2.1 Damage in hazardous areas | p. 10 |
2.2.2 Damage to industrial plants | p. 15 |
2.2.3 Damage to power supply systems | p. 24 |
2.2.4 Damage to a house | p. 27 |
2.2.5 Damage to aircraft and airports | p. 36 |
2.2.6 Damage to wind power stations | p. 38 |
2.2.7 Catastrophic damage | p. 39 |
3 Origin and effect of surges | p. 43 |
3.1 Atmospheric overvoltages | p. 45 |
3.1.1 Direct and close-up strikes | p. 45 |
3.1.1.1 Voltage drop at the impulse earthing resistance | p. 48 |
3.1.1.2 Induced voltages in metal loops | p. 49 |
3.1.2 Remote strikes | p. 56 |
3.1.3 Coupling of surge currents on signal lines | p. 57 |
3.1.3.1 Ohmic coupling | p. 58 |
3.1.3.2 Inductive coupling | p. 58 |
3.1.3.3 Capacitive coupling | p. 59 |
3.1.4 Magnitude of atmospheric overvoltages | p. 60 |
3.2 Switching overvoltages | p. 61 |
4 Protective measures, standards | p. 67 |
4.1 Lightning protection | p. 69 |
4.1.1 Risk analysis, protection levels | p. 74 |
4.1.2 External and internal lightning protection, DIN VDE 0185 Part 1, DIN V ENV 61024-1 (VDE V 0185 Part 100) | p. 78 |
4.1.3 Concept of lightning protection zones, DIN VDE 0185-103 (VDE 0185 Part 103) | p. 79 |
4.1.3.1 LEMP-protection planning | p. 83 |
4.1.3.1.1 Definition of lightning protection levels | p. 83 |
4.1.3.1.2 Definition of lightning protection zones | p. 83 |
4.1.3.1.3 Room shielding measures | p. 84 |
4.1.3.1.4 Equipotential bonding networks | p. 90 |
4.1.3.1.5 Equipotential bonding measures for supply lines and electric lines at the boundaries of the lightning protection zones | p. 92 |
4.1.3.1.6 Cable routing and shielding | p. 94 |
4.1.3.2 Realization of LEMP protection | p. 97 |
4.1.3.3 Installation and supervision of LEMP protection | p. 99 |
4.1.3.4 Acceptance inspection of LEMP protection | p. 100 |
4.1.3.5 Periodic inspection | p. 101 |
4.1.3.6 Costs | p. 101 |
4.2 Surge protection for electrical systems of buildings, IEC 60364, DIN VDE 0100 | p. 103 |
4.2.1 IEC 60364-4-443/DIN VDE 0100 Part 443 | p. 104 |
4.2.2 IEC 60664-1/DIN VDE 0110 Part 1 | p. 105 |
4.2.3 IEC 60364-5-534/DIN VDE 0100 Part 534 | p. 109 |
4.3 Surge protection for telecommunications systems, DIN VDE 0800, DIN VDE 0845 | p. 110 |
4.4 Electromagnetic compatibility including protection against electromagnetic impulses and lightning, VG 95 372 | p. 112 |
4.5 Standards for components and protective devices | p. 112 |
4.5.1 Connection components, E DIN EN 50164-1 (VDE 0185 Part 201) | p. 113 |
4.5.2 Arresters for lightning currents and surges | p. 113 |
4.5.2.1 Arresters for power engineering, IEC 61643-1/E DIN VDE 0675 Part 6 | p. 113 |
4.5.2.1.1 Important data for arrester selection | p. 119 |
4.5.2.1.2 Coordination of the arresters according to requirements and locations | p. 120 |
4.5.2.1.3 N-PE arrester, E DIN VDE 0675 Part 6/A2 | p. 121 |
4.5.2.2 Arresters for information technology, IEC SC 37A/E DIN VDE 0845 Part 2 | p. 122 |
4.5.2.2.1 Important data for arrester selection | p. 124 |
4.5.2.2.2 Arrester coordination according to requirements and locations | p. 125 |
4.5.2.3 Arrester coordination | p. 125 |
5 Components and protective devices: construction, effect and application | p. 127 |
5.1 Air terminations | p. 127 |
5.2 Building and room shields | p. 129 |
5.3 Shields for lines between screened buildings | p. 138 |
5.4 Shields for cables in buildings | p. 141 |
5.5 Optoelectronic connections | p. 143 |
5.5.1 Optical fibre transmission system | p. 144 |
5.5.2 Optocoupler | p. 145 |
5.6 Equipotential bonding | p. 145 |
5.7 Isolating spark gaps | p. 150 |
5.8 Arresters | p. 153 |
5.8.1 Arresters for power engineering | p. 155 |
5.8.1.1 Surge arresters for low-voltage overhead lines, class A | p. 155 |
5.8.1.2 Lightning current arresters for lightning protection equipotential bonding, class B | p. 157 |
5.8.1.3 Surge arresters for protection of permanent installation, class C | p. 167 |
5.8.1.4 Surge arresters for application at socket outlets, class D | p. 174 |
5.8.1.5 Surge arresters for application at equipment inputs | p. 175 |
5.8.1.6 Application of lightning current arresters and surge arresters | p. 175 |
5.8.1.6.1 Graded application of arresters, energetic coordination between surge arresters and equipment to protect | p. 178 |
5.8.1.6.2 Application of arresters in different system configurations | p. 182 |
5.8.1.6.3 Selection of arrester backup fuses | p. 196 |
5.8.2 Arresters for information technology | p. 206 |
5.8.2.1 Arresters for measuring and control systems | p. 209 |
5.8.2.1.1 Blitzductor CT: Construction and mode of functioning | p. 210 |
5.8.2.1.2 Blitzductor CT: Selection criteria | p. 223 |
5.8.2.1.3 Blitzductor CT: Examples of application | p. 228 |
5.8.2.1.4 Arresters for intrinsically safe measuring and control circuits and their application | p. 238 |
5.8.2.1.5 Arresters for cathodic protection systems | p. 246 |
5.8.2.1.6 Arresters in Euro-card format | p. 248 |
5.8.2.1.7 Arresters in LSA-Plus technology | p. 248 |
5.8.2.2 Combined protective devices for power supply inputs and information technology inputs | p. 253 |
5.8.2.3 Protective devices for data networks/systems | p. 255 |
5.8.2.3.1 Protective devices for application-neutral cabling | p. 255 |
5.8.2.3.2 Protective devices for token ring-cabling | p. 262 |
5.8.2.3.3 Protective devices for Ethernet twisted pair-cabling | p. 265 |
5.8.2.3.4 Protective devices for Ethernet coax-cabling | p. 267 |
5.8.2.3.5 Protective devices for standard cabling | p. 271 |
5.8.2.3.6 Protective devices for data telecontrol transmission by ISDN base terminal | p. 277 |
5.8.2.3.7 Protective devices for data telecontrol transmission by ISDN primary multiplex terminal | p. 284 |
5.8.2.3.8 Protective devices for data telecontrol transmission by analogous a/b-wire terminal | p. 286 |
6 Application in practice: Some examples | p. 293 |
6.1 Industrial plants | p. 295 |
6.1.1 Fabrication hall | p. 295 |
6.1.2 Store and dispatch building | p. 296 |
6.1.3 Factory central heating | p. 302 |
6.1.4 Central computer | p. 307 |
6.1.5 European installation bus (EIB) | p. 309 |
6.1.6 Other bus systems | p. 313 |
6.1.7 Fire and burglar alarm system | p. 313 |
6.1.8 Video control system | p. 316 |
6.1.9 Radio paging system | p. 318 |
6.1.10 Electronic vehicle weighbridge | p. 320 |
6.2 Peak-load power station | p. 323 |
6.3 Mobile radio systems | p. 328 |
6.4 Television transmitter | p. 334 |
6.5 Mobile telecommunication facility | p. 339 |
6.6 Airport control tower | p. 343 |
7 Prospects | p. 351 |
Index | p. 353 |