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BSI 23/30453812 DC:2023 Edition

BSI 23/30453812 DC:2023 Edition

$13.70

BS EN IEC 62271-208. High-voltage switchgear and controlgear – Part 208. Methods to quantify the steady state, power-frequency electromagnetic fields generated by HV switchgear assemblies and HV/LV prefabricated substations

Published By Publication Date Number of Pages
BSI 2023 52
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PDF Catalog

PDF Pages PDF Title
9 1 Scope
2 Normative references
10 3 Terms and definitions
11 4 Evaluation requirements
4.1 General
12 4.2 Methods of evaluation
4.3 Evaluation of electric fields
4.3.1 HV switchgear assemblies
4.3.2 HV/LV prefabricated substations
4.4 Evaluation of magnetic fields
4.4.1 HV switchgear assemblies
13 4.4.2 HV/LV prefabricated substations
14 5 Measurements
5.1 General
5.2 Measuring instruments
5.3 Measurement procedures
5.3.1 General
15 5.4 Hot-spot measurement procedure
5.4.1 Electric field
18 5.4.2 Magnetic field
20 5.4.3 Background fields
5.4.4 Environmental factors
5.4.4.1 Electric field measurement
5.4.4.2 Magnetic field measurement
5.4.4.3 Other conditions
21 5.5 Isoline measurement procedure
5.5.1 General
5.5.2 Measurement height(s)
5.5.3 Intervals between measurement points
22 5.5.4 Background fields
5.5.5 Environmental factors
5.6 Measurement set-up
5.6.1 General
5.6.2 Hot spot measurement set-up
24 5.6.3 Isoline measurement set-up
25 5.6.4 External connections
26 5.6.5 Additional provisions for HV/LV prefabricated substations
5.6.5.1 Electric field
5.6.5.2 Magnetic field
6 Calculations
6.1 General
27 6.2 Software
6.3 Calculation procedures
6.4 Results
6.5 Validation
28 7 Documentation
7.1 Characteristics of the HV switchgear assembly or prefabricated substation
7.2 Evaluation method
7.3 Presentation of the measurement results
7.4 Presentation of the calculation results
30 Annex A (informative) Presentation of E or B field measurement data – Examples for a typical HV/LV prefabricated substation
A.1 Presentation of Hot-spot B-field measurement results
A.1.1 Hot spot locations
31 A.1.2 Hot spot locations with its E or B field values
A.1.3 Variation of the E or B field as a function of the distance
32 A.1.4 Field variation around substation at hot spot locations
A.1.5 Background fields
A.2 Presentation of Isoline B-field measurement results
A.2.1 Location of measurement points on Isoline
33 A.2.2 Background fields
34 A.2.3 Example of an Isoline measurement on a 250kVA transformer substation
35 Annex B (informative) Examples of analytical solutions to benchmark EMF calculations
B.1 Magnetic field
43 B.2 Electric field

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