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BS IEC 61000-5-6:2024

BS IEC 61000-5-6:2024

$215.11

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

Published By Publication Date Number of Pages
BSI 2024 78
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PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
8 FOREWORD
10 INTRODUCTION
11 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
16 3.2 Abbreviated terms
4 Overview and general considerations
4.1 Overview
17 4.2 General considerations
4.2.1 Elementary interference control
4.2.2 Shields and interfaces
Figures
Figure 1 – System barrier topology
19 5 Mitigation of radiated and conducted disturbances
5.1 Topological concepts
Figure 2 – Generalized system topology
20 5.2 Mitigation needs
5.3 The general concept of enclosure
21 5.4 Interactions at the enclosure boundary
6 Shielding
6.1 General
Figure 3 – Ports of an apparatus or facility
22 Figure 4 – Topological concept of shields with interfaces at penetration points
23 6.2 Classification of protection zones
6.2.1 General
Figure 5 – Zones of protection of shielding and earthing systems
24 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
25 6.3.2 Shielding effectiveness
6.3.3 Maintaining shielding effectiveness
27 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)
28 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)
29 6.4.7 Dealing with apertures
Figure 7 – Honeycomb inserts for different cut-off frequencies
30 Figure 8 – Typical screening attenuation of honeycomb inserts
31 7 Filters
7.1 General
32 7.2 Fundamental filter characteristics
7.2.1 General
7.2.2 Attenuation and insertion loss
Figure 9 – Parameters for attenuation and insertion loss
33 7.2.3 Basic types of filters
34 7.3 Functional tasks
Figure 10 – Prevention of interference on installed equipment
Figure 11 – Reduction of electromagnetic disturbancesin the power network and the environment
35 7.4 Additional filtering concerns
7.4.1 Technical aspects
7.4.2 Economic aspects
36 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
37 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
38 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
39 7.5.12 Permissible reactive current
7.6 Filter installation
7.6.1 General
7.6.2 Installation and mounting techniques
40 7.6.3 Wiring
7.6.4 Installation of cabinet filters
Figure 13 – Mounting of filters
Figure 14 – Connection of screened cables
41 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
42 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
43 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
44 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
45 8.2 Motor-generator sets
8.3 Engine generators
8.4 Uninterruptible power supply (UPS)
46 8.5 Optical links
9 Surge-protective devices
9.1 General
47 9.2 Direct equipment protection
48 9.3 Installation of multiple SPDs
49 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
50 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
51 A.2.2 Discussion on the protection-led approach
Figure A.1 – Protection-led approach
Figure A.2 – Resilience-based approach
52 A.2.3 Benefits of a resilience-based approach
A.2.4 Affordability and risk
Table A.1 – Protection levels based on operational criticality
53 A.2.5 Appropriate application of a resilience-based approach
Table A.2 – Appropriate application of the resilience-based approach
54 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
55 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
56 Table A.3 – Identify function of the HPEM resilience framework
57 A.4.3 Protect
58 Table A.4 – Protect function of the HPEM resilience framework
60 Figure A.4 – Protection scheme utilising shielded cables and shielded cabinets
62 A.4.4 Detect
Table A.5 – Detect function of the HPEM resilience framework
65 Table A.6 – Some advantages and limitations of different technologiesfor HPEM detection applications
67 Figure A.5 – IEMI detector developed by Fraunhofer INT, Germany
68 Figure A.6 – TOTEM detector developed by QinetiQ ltd., UK
69 Figure A.7 – Example of some HPEM events detected during a field-trial installation
70 A.4.5 Respond
Table A.7 – Respond function of the HPEM resilience framework
71 A.4.6 Recover
A.5 Summary
Table A.8 – Recover function of the HPEM resilience framework
72 Bibliography

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