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BS IEC 61000-5-6:2024 – TC

BS IEC 61000-5-6:2024 – TC

$280.87

Tracked Changes. Electromagnetic compatibility (EMC) – Installation and mitigation guidelines. Mitigation of external EM influences

Published By Publication Date Number of Pages
BSI 2024 181
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PDF Catalog

PDF Pages PDF Title
105 undefined
107 CONTENTS
111 FOREWORD
113 INTRODUCTION
114 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
119 3.2 Abbreviated terms
4 Overview and general considerations
4.1 Overview
120 4.2 General considerations
4.2.1 Elementary interference control
4.2.2 Shields and interfaces
Figures
Figure 1 – System barrier topology
122 5 Mitigation of radiated and conducted disturbances
5.1 Topological concepts
Figure 2 – Generalized system topology
123 5.2 Mitigation needs
5.3 The general concept of enclosure
124 5.4 Interactions at the enclosure boundary
6 Shielding
6.1 General
Figure 3 – Ports of an apparatus or facility
125 Figure 4 – Topological concept of shields with interfaces at penetration points
126 6.2 Classification of protection zones
6.2.1 General
Figure 5 – Zones of protection of shielding and earthing systems
127 6.2.2 Zone 1 – Building shield
6.2.3 Zone 2 – Room shield
6.2.4 Zone 3 – Equipment shield
6.2.5 Zone 4 – Apparatus shield
6.3 Design principles for screening
6.3.1 General
128 6.3.2 Shielding effectiveness
6.3.3 Maintaining shielding effectiveness
130 6.4 Implementation of screening
6.4.1 General
6.4.2 Sensitive apparatus
6.4.3 Shielding of racks and chassis (zones 4/3 barrier)
6.4.4 Shielding of cabinets (zones 3/2 barrier)
6.4.5 Shielding of rooms (zones 2/1 barrier)
131 6.4.6 Shielding of buildings (zones 1/0 barrier)
Figure 6 – Example of performance of high-efficiency shielded enclosure
Tables
Table 1 – Measured shielding effectiveness of a 2 m × 2 m cage madeof concrete building armour, against a 20 ns rise-time pulse(equivalent frequency less than 20 MHz)
132 6.4.7 Dealing with apertures
Figure 7 – Honeycomb inserts for different cut-off frequencies
133 Figure 8 – Typical screening attenuation of honeycomb inserts
134 7 Filters
7.1 General
135 7.2 Fundamental filter characteristics
7.2.1 General
7.2.2 Attenuation and insertion loss
Figure 9 – Parameters for attenuation and insertion loss
136 7.2.3 Basic types of filters
137 7.3 Functional tasks
Figure 10 – Prevention of interference on installed equipment
Figure 11 – Reduction of electromagnetic disturbancesin the power network and the environment
138 7.4 Additional filtering concerns
7.4.1 Technical aspects
7.4.2 Economic aspects
139 7.5 Selection criteria
7.5.1 General
7.5.2 Voltage rating
7.5.3 Current rating
7.5.4 Duty-cycle and overload operating conditions
140 7.5.5 Operating frequency and range of frequencies to be filtered
7.5.6 Voltage drop and signal loss
7.5.7 Ambient temperature range
7.5.8 Insertion loss and attenuation
141 7.5.9 Withstand voltage
7.5.10 Attenuation of HF transient disturbances
7.5.11 Leakage current to protective earthing conductor
Figure 12 – Examples of insertion loss characteristics of AC/DC power port filters
142 7.5.12 Permissible reactive current
7.6 Filter installation
7.6.1 General
7.6.2 Installation and mounting techniques
143 7.6.3 Wiring
7.6.4 Installation of cabinet filters
Figure 13 – Mounting of filters
Figure 14 – Connection of screened cables
144 7.7 Filter testing
7.7.1 General considerations
Figure 15 – Example of integration of filters inside an equipment cabinet
Figure 16 – Example of filter mounting in a dedicated unit
145 7.7.2 Insulation to earth and withstand voltage of installed filters
7.7.3 Insertion loss
7.7.4 Attenuation of HF transient disturbances
146 8 Decoupling devices
8.1 Isolation transformers
Figure 17 – Laboratory measurement showing the propagation of a 0,5 μs to 100 kHz ring wave, applied in differential mode, through an ordinary isolation transformer
147 Figure 18 – Propagation of a 0,5 μs to 100 kHz ring wave operatingin the differential mode through a “line isolator” transformer
Figure 19 – Inter-winding coupling in an isolation transformer
148 8.2 Motor-generator sets
8.3 Engine generators
8.4 Uninterruptible power supply (UPS)
149 8.5 Optical links
9 Surge-protective devices
9.1 General
150 9.2 Direct equipment protection
151 9.3 Installation of multiple SPDs
152 9.4 Side-effects of uncoordinated cascades
9.5 Typical protective devices
9.5.1 General
9.5.2 Voltage-limiting type SPDs
9.5.3 Voltage-switching type SPDs
153 Annex A (informative)Resilience-based approach for the mitigation ofexternal high-power electromagnetic environments
A.1 Overview
A.2 The concept of resilience
A.2.1 General
154 A.2.2 Discussion on the protection-led approach
Figure A.1 – Protection-led approach
Figure A.2 – Resilience-based approach
155 A.2.3 Benefits of a resilience-based approach
A.2.4 Affordability and risk
Table A.1 – Protection levels based on operational criticality
156 A.2.5 Appropriate application of a resilience-based approach
Table A.2 – Appropriate application of the resilience-based approach
157 A.3 EM resilience model and framework
A.3.1 General
A.3.2 Identify function
A.3.3 Protect function
Figure A.3 – The five functions of the NIST cyber security framework
158 A.3.4 Detect function
A.3.5 Respond function
A.3.6 Recover function
A.3.7 Adaptation of the NIST framework to HPEM resilience
A.4 HPEM resilience framework implementation
A.4.1 Overview
A.4.2 Identify
159 Table A.3 – Identify function of the HPEM resilience framework
160 A.4.3 Protect
161 Table A.4 – Protect function of the HPEM resilience framework
163 Figure A.4 – Protection scheme utilising shielded cables and shielded cabinets
165 A.4.4 Detect
Table A.5 – Detect function of the HPEM resilience framework
168 Table A.6 – Some advantages and limitations of different technologiesfor HPEM detection applications
170 Figure A.5 – IEMI detector developed by Fraunhofer INT, Germany
171 Figure A.6 – TOTEM detector developed by QinetiQ ltd., UK
172 Figure A.7 – Example of some HPEM events detected during a field-trial installation
173 A.4.5 Respond
Table A.7 – Respond function of the HPEM resilience framework
174 A.4.6 Recover
A.5 Summary
Table A.8 – Recover function of the HPEM resilience framework
175 Bibliography

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BS IEC 61000-5-6:2024 - TC
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