International Standards and Conformity Assessment for all electrical, electronic and related technologies

SC 77B

High frequency phenomena

 

Detail

Committee
Working Groups
Project Leader

Current

Status

Frcst Pub

Date

Stability

Date

SC 77BMT 12Mr Georg HedderichPPUB2019-062026

History

Stage
Document
Downloads
Decision Date
Target Date
ACD
77B/775/RR PDF file 106 kB
2017-05-10 
CD
77B/776/CD
PDF file 4676 kB
2017-05-122017-05
PCC
2017-07-072017-07
A2CD
77B/787/CC PDF file 932 kB
Word file 341 kB
2017-10-062018-03
ACDV
77B/787A/CC PDF file 672 kB
Word file 564 kB
2018-02-162018-04
TCDV
2018-03-012018-04
CCDV
77B/790/CDV
PDF file 4571 kB
PDF file 4590 kB
2018-04-202018-04
PRVC
2018-07-132018-07
AFDIS
77B/794/RVC PDF file 237 kB
Word file 220 kB
2018-10-052018-10
TFDIS
2018-10-262018-10
DECFDIS
2018-12-062018-12
RFDIS
2018-12-172018-12
CFDIS
77B/797/FDIS

2019-01-182019-03
PRVD
2019-03-012019-03
APUB
77B/799/RVD PDF file 155 kB
2019-03-152019-03
BPUB
2019-03-152019-03
PPUB
2019-05-162019-04
  

Abstract

IEC 61000-4-18: 2019 focuses on the immunity requirements and test methods for electrical and electronic equipment, under operational conditions, with regard to:
a) repetitive slow damped oscillatory waves occurring mainly in power, control and signal cables installed in high voltage and medium voltage (HV/MV) substations;
b) 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. 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.
This second edition cancels and replaces the first edition published in 2006 and its Amendment 1:2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) addition of a mathematical modelling of damped oscillatory wave waveform;
b) new Annex B on measurement uncertainty;
c) addition high speed CDN;
d) addition of calibration procedures for CDNs;
e) addition of the use of the capacitive coupling clamp on interconnection lines for fast damped oscillatory waves;
f) addition of a test procedure for DC/DC converters in case the CDN does not work;
g) new Annex C on issues relating to powering EUTs having DC/DC converters at the input.
Keywords: immunity requirements and test methods for electrical and electronic equipment
The contents of the corrigendum of August 2019 have been included in this copy.

Project

IEC 61000-4-18:2019 ED2

Electromagnetic compatibility (EMC) - Part 4-18: Testing and measurement techniques - Damped oscillatory wave immunity test

 

 

Associated Documents:

77B/819/DL

PDF file 103 kB