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BS EN IEC 61000-4-18:2019

BS EN IEC 61000-4-18:2019

$198.66

Electromagnetic compatibility (EMC) – Testing and measurement techniques. Damped oscillatory wave immunity test

Published By Publication Date Number of Pages
BSI 2019 64
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This part of IEC 61000 focuses on the immunity requirements and test methods for electrical and electronic equipment, under operational conditions, with regard to:

  1. repetitive slow damped oscillatory waves occurring mainly in power, control and signal cables installed in high voltage and medium voltage (HV/MV) substations;

  2. repetitive fast damped oscillatory waves occurring mainly in power, control and signal cables installed in gas insulated substations (GIS) and in some cases also air insulated substations (AIS) or in any installation due to high-altitude electromagnetic pulse (HEMP) phenomena.

The object of this document is to establish a common and reproducible reference for evaluating the immunity of electrical and electronic equipment when subjected to damped oscillatory waves on supply, signal, control and earth ports. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon.

NOTE As described in IEC Guide 107, this is a basic EMC publication for use by product committees of the IEC. As also stated in Guide 107, the IEC product committees are responsible for determining whether this immunity test standard is applied or not, and if applied, they are responsible for determining the appropriate test levels and performance criteria.1

The document defines:

  • test voltage and current waveforms;

  • ranges of test levels;

  • test equipment;

  • calibration and verification procedures of test equipment;

  • test setups;

  • test procedure.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 English
CONTENTS
10 FOREWORD
12 INTRODUCTION
13 1 Scope
2 Normative references
14 3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
16 3.2 Abbreviated terms
17 4 General
4.1 Types of damped oscillatory waves
Tables
Table 1 – Values of the parameters of w(t) for each standard oscillation frequency
18 4.2 Slow damped oscillatory wave phenomenon
19 4.3 Fast damped oscillatory wave phenomenon
4.3.1 General
4.3.2 Disturbances produced by switchgear and controlgear
20 4.3.3 Disturbances produced by high-altitude electromagnetic pulse (HEMP)
5 Test levels
21 6 Test instrumentation
6.1 General
Table 2 – Test levels for the slow damped oscillatory wave (100 kHz or 1 MHz)
Table 3 – Test levels for the fast damped oscillatory wave (3 MHz, 10 MHz or 30 MHz)
22 6.2 Damped oscillatory wave generators
6.2.1 Slow damped oscillatory wave generator
24 6.2.2 Fast damped oscillatory wave generator
26 6.3 Coupling/decoupling networks
6.3.1 General
27 6.3.2 Coupling/decoupling networks for slow damped oscillatory waves
33 6.3.3 Coupling/decoupling networks for fast damped oscillatory waves
35 6.4 Calibration of coupling/decoupling networks
6.4.1 General
36 6.4.2 Calibration of CDNs for slow damped oscillatory waves
37 6.4.3 Calibration of CDNs for fast damped oscillatory waves
Table 4 – Damped oscillatory waveform specifications at the EUT port of CDNs for slow damped oscillatory waves
39 6.5 Capacitive coupling clamp for fast damped oscillatory waves
6.5.1 Characteristics of the capacitive coupling clamp
Table 5 – Damped oscillatory waveform specifications at the EUT port of CDNsfor fast damped oscillatory waves
40 6.5.2 Calibration of the capacitive coupling clamp
41 7 Test setup
7.1 Test equipment
7.2 Verification of the test instrumentation
42 7.3 Test setup
7.3.1 General
44 7.3.2 Particular requirements for tests on shielded lines for slow damped oscillatory waves
45 7.3.3 Particular requirements for the test setup for fast damped oscillatory waves testing
47 7.4 Equipment under test
7.5 Coupling/decoupling networks
8 Test procedure
8.1 General
8.2 Laboratory reference conditions
8.2.1 Climatic conditions
8.2.2 Electromagnetic conditions
48 8.3 Execution of the test
49 9 Evaluation of test results
10 Test report
51 Annex A (informative) Information on test levels for the damped oscillatory wave
52 Annex B (informative) Measurement uncertainty (MU) considerations
B.1 General
B.2 Legend for damped oscillatory wave parameters
53 B.3 Uncertainty contributors to the damped oscillatory wave MU
B.4 Uncertainty of the output voltage and current measurement
B.4.1 General
B.4.2 Rise time of the 3 MHz damped oscillatory wave
54 Table B.1 – Example of uncertainty budget for the rise time of the open circuit voltage of the 3 MHz damped oscillatory wave (T1)
55 B.4.3 Peak of the 3 MHz damped oscillatory wave
Table B.2 – Example of uncertainty budget for the peak of the open circuit voltage of the 3 MHz damped oscillatory wave (Pk1)
56 B.4.4 Further MU contributions to time measurements
B.4.5 Rise time of the step response and bandwidth of the frequency response of the measuring system
57 B.4.6 Impulse peak and width distortion due to the limited bandwidth of the measuring system
Table B.3 – α factor of different unidirectional impulse responses corresponding to the same bandwidth of system B
58 B.5 Application of uncertainties in the damped oscillatory waveform compliance criterion
59 Annex C (informative) Issues relating to powering EUTs having DC/DC converters at the input
C.1 General
60 C.2 Considerations for remediation
62 Bibliography

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