EN 61083-2:2013

Instruments and software used for measurement in high-voltage and high-current tests - Part 2: Requirements for software for tests with impulse voltages and currents

IEC 61083-2:2013 applies to software used for evaluation of impulse parameters from recorded impulse voltages and currents. It provides test waveforms and reference values for the software required to meet the measuring uncertainties and procedures specified in IEC 60060-1, IEC 60060-2, IEC 60060-3 and IEC 62475. Hardware with built-in firmware that cannot accept external numerical input data is not covered by this standard. The object of this standard is to establish the tests which are necessary to show that the performance of the software complies with the requirements of the relevant IEC standards, define the terms specifically related to digital processing, specify reference values and the acceptance limits for the reference impulses, specify the requirements for the record of performance and define the methods to assess the contribution of software to the measurement uncertainty. This second edition cancels and replaces the first edition published in 1996 and constitutes a technical revision. The main changes with respect to the previous edition are: - the test data generator software has been updated, - the number of reference impulse waveforms included in the test data generator has been significantly increased, - all reference values have been recalculated according to new definitions in IEC 60060-1 and IEC 62475 and - methods for estimating the uncertainty of parameter evaluation have been introduced and are in line with the procedure introduced in IEC 60060-2. Keywords: High voltage, High current, Impulse voltage, Impulse current.

Messgeräte und Software für Messungen bei Hochspannungs- und Hochstrom-Prüfungen - Teil 2: Anforderungen an die Software bei Prüfungen mit Stoßspannungen und -strömen

Appareils et logiciels utilisés pour les mesures pendant les essais à haute tension et haute intensité - Partie 2: Exigences pour le logiciel pour les essais avec des tensions et des courants de choc

La CEI 61083-2:2013 est applicable aux logiciels utilisés pour l'évaluation des paramètres de choc à partir des tensions et des courants de choc enregistrés. Elle précise les exigences relatives aux formes d'onde d'essai et aux valeurs de référence nécessaires pour respecter les incertitudes de mesures et les procédures spécifiées dans la CEI 60060-1, la CEI 60060-2, la CEI 60060-3 et la CEI 62475. La présente norme ne couvre pas les matériels munis de microprogrammes intégrés qui ne peuvent pas accepter les données d'entrée numériques externes. La présente norme à pour objet de décrire les essais nécessaires pour montrer que les caractéristiques du logiciel sont conformes aux exigences des normes CEI correspondantes, définir les termes particuliers relatifs au traitement numérique, spécifier les valeurs de référence et les limites d'acceptation pour les chocs de référence, spécifier les exigences pour la fiche de caractéristiques et définir les méthodes permettant d'évaluer la contribution du logiciel à l'incertitude de mesure. Cette deuxième édition annule et remplace la première édition parue en 1996. Elle constitue une révision technique. Les modifications principales par rapport à l'édition précédente sont les suivantes: - le générateur de données numériques d'essai a fait l'objet d'une mise à jour, - le nombre de formes d'onde de choc de référence inclus dans le générateur de données numériques d'essai a été considérablement augmenté, - toutes les valeurs de référence ont été recalculées selon les nouvelles définitions énoncées dans la CEI 60060-1 et la CEI 62475 et - des méthodes pour l'estimation de l'incertitude d'évaluation des paramètres ont été introduites; ces méthodes sont conformes à la procédure introduite dans la CEI 60060-2. Mots-clés: Haute tension, Haute intensité, tension de choc, courants de choc

Instrumenti in programska oprema za meritve visokih napetosti in velikih tokov - 2. del: Zahteve za programsko opremo za preskušanje z impulzi

Ta del IEC 61083 velja za programsko opremo, ki se uporablja za oceno parametrov impulza iz zabeleženih napetosti in tokov impulza. Zagotavlja preskusne tokovne poti in referenčne vrednosti za programsko opremo, ki so potrebne za usklajevanje z merilno negotovostjo in postopki iz IEC 60060-1, IEC 60060-2, IEC 60060-3 in IEC 62475. Ta standard ne zajema strojne opreme z vdelano programsko opremo, ki ne sprejema zunanjih številskih vhodnih podatkov. Namen tega standarda je: – uveljaviti preskuse, s katerimi je mogoče pokazati, da delovanje programske opreme ustreza zahtevam zadevnih standardov IEC; – določiti pogoje, ki posebej zadevajo digitalno obdelavo; – določiti referenčne vrednosti in meje sprejemljivosti za referenčne impulze; –določiti zahteve za zabeleženo delovanje; – določiti metode za oceno prispevanja programske opreme k merilni negotovosti.

General Information

• Status: Published
• Publication Date: 30-May-2013
• Withdrawal Date: 23-Apr-2016
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 19.080 - Electrical and electronic testing
• Technical Committee: CLC/SR 42 - High-voltage testing techniques
• Drafting Committee: IEC/TC 42 - IEC_TC_42
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 31-May-2013
• Completion Date: 31-May-2013
• Ref Project: SIST EN 61083-2:2013 - Instruments and software used for measurement in high-voltage and high-current tests - Part 2: Requirements for software for tests with impulse voltages and currents

Relations

• Replaces: EN 61083-2:1997 - Digital recorders for measurements in high-voltage impulse tests - Part 2: Evaluation of software used for the determination of the parameters of impulse waveforms
• Effective Date: 28-Jan-2023

Overview

EN 61083-2:2013 (CLC) - Instruments and software used for measurement in high-voltage and high-current tests - Part 2 - specifies requirements for software that evaluates impulse parameters from recorded impulse voltages and impulse currents. It defines tests, reference waveforms and acceptance limits to demonstrate that software processing meets the measuring uncertainties and procedures required by related IEC standards (IEC 60060-1, IEC 60060-2, IEC 60060-3 and IEC 62475). Hardware with fixed firmware that cannot accept external numerical input data is explicitly excluded.

Key topics and technical requirements

• Scope of software testing: Procedures to verify software that derives impulse parameters (peak, front time, tail time, etc.) from recorded digital data.
• Test Data Generator (TDG): A reference dataset generator included/updated in this edition that supplies numerous reference impulse waveforms for validation and comparison.
• Reference values & acceptance limits: Normative reference values and limits for a wide range of impulse types (lightning impulses, chopped lightning, switching impulses, oscillating impulses, impulse currents) are provided to judge software performance.
• Uncertainty assessment: Methods to quantify the software’s contribution to measurement uncertainty are introduced and aligned to the uncertainty procedures in IEC 60060-2 (including a simplified and an alternative method in Annex B).
• Record of performance: Requirements for documenting software test results, acceptance criteria and traceable evidence that the software meets the standard.
• Exclusions & definitions: Terms related to digital processing and the boundary between hardware/firmware and software testing are clearly defined.

Applications and practical value

• Validating data‑processing software used in high-voltage and high-current impulse testing (e.g., lightning impulse and switching impulse tests).
• Ensuring compliance with measurement uncertainty and parameter evaluation methods required for type testing, routine testing and research.
• Supporting calibration labs, HV test houses, utilities and manufacturers (cables, transformers, surge arresters) in demonstrating robust, repeatable software evaluation of recorded impulses.
• Providing standardised reference waveforms (via TDG) to reproduce and compare software algorithms across labs and suppliers.

Who should use this standard

• Software developers of HV/HC test evaluation tools
• High-voltage test laboratories and research facilities
• Calibration and conformity assessment bodies
• Manufacturers of electrical equipment subject to impulse testing

Related standards

• IEC/EN 60060-1, -2, -3 (High-voltage test techniques)
• IEC/EN 61083-1 (Requirements for instruments)
• IEC/EN 62475 (High-current test techniques)
• ISO/IEC Guide 98-3 (GUM) - uncertainty guidance

Keywords: EN 61083-2:2013, CLC, high voltage, high current, impulse voltage, impulse current, software testing, test data generator, measurement uncertainty, IEC 60060.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2013
1DGRPHãþD
SIST EN 61083-2:1998
Instrumenti in programska oprema za meritve visokih napetosti in velikih tokov - 2.
del: Zahteve za programsko opremo za preskušanje z impulzi
Instruments and software used for measurement in high-voltage and high-current tests -
Part 2: Requirements for software for tests with impulse voltages and currents
Messgeräte und Software für die Messung von Hochspannungs- und Hochstrom-
Prüfungen - Teil 2: Anforderungen an die Software für Impulsprüfungen
Appareils et logiciels utilisés pour les mesures pendant les essais à haute tension et
haute intensité -- Partie 2: Exigences pour le logiciel pour les essais avec des tensions et
des courants de choc
Ta slovenski standard je istoveten z: EN 61083-2:2013
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61083-2
NORME EUROPÉENNE
May 2013
EUROPÄISCHE NORM
ICS 17.220.20; 19.080 Supersedes EN 61083-2:1997

English version
Instruments and software used for measurement in high-voltage
and high-current tests -
Part 2: Requirements for software for tests
with impulse voltages and currents
(IEC 61083-2:2013)
Appareils et logiciels utilisés pour les Messgeräte und Software für Messungen
mesures pendant les essais à haute bei Hochspannungs- und Hochstrom-
tension et haute intensité - Prüfungen -
Partie 2: Exigences pour le logiciel pour Teil 2: Anforderungen an die Software bei
les essais avec des tensions et des Prüfungen mit Stoßspannungen und -
courants de choc strömen
(CEI 61083-2:2013) (IEC 61083-2:2013)

This European Standard was approved by CENELEC on 2013-04-24. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61083-2:2013 E
Foreword
The text of document 42/318/FDIS, future edition 2 of IEC 61083-2, prepared by IEC/TC 42
"High-voltage testing techniques" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 61083-2:2013.
The following dates are fixed:
(dop) 2014-01-24
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2016-04-24
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61083-2:1997.

EN 61083-2:1997:
a) the test data generator software has been updated;
b) the number of reference impulse waveforms included in the test data generator has been
significantly increased;
c) all reference values have been recalculated according to new definitions in EN 60060-1 and
EN 62475;
d) methods for estimating the uncertainty of parameter evaluation has been introduced and are in line
with the procedure introduced in EN 60060-2.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61083-2:2013 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 61083-2:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60060-1 2010 High-voltage test techniques - EN 60060-1 2010
Part 1: General definitions and test
requirements
IEC 60060-2 - High-voltage test techniques - EN 60060-2 -
Part 2: Measuring systems
IEC 60060-3 2006 High voltage test techniques - EN 60060-3 2006
Part 3: Definitions and requirements + corr. October 2006
for on-site testing
IEC 61083-1 2001 Instruments and software used for EN 61083-1 2001
measurement in high-voltage impulse tests -
Part 1: Requirements for instruments

IEC 62475 2010 High-current test techniques - Definitions EN 62475 2010
and requirements for test currents and
measuring systems
ISO/IEC Guide 98-3 - Uncertainty of measurement - - -
Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)

IEC 61083-2 ®
Edition 2.0 2013-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instruments and software used for measurement in high-voltage and high-

current tests –
Part 2: Requirements for software for tests with impulse voltages and currents

Appareils et logiciels utilisés pour les mesures pendant les essais à haute

tension et haute intensité –
Partie 2: Exigences pour le logiciel pour les essais avec des tensions et des

courants de choc
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 17.220.20; 19.080 ISBN 978-2-83220-673-7

– 2 – 61083-2 © IEC:2013
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope and object . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Test data generator (TDG) . 9
4.1 Principle . 9
4.2 Data format . 9
5 Values and acceptance limits for the parameters of the reference impulses . 9
6 Software testing . 9
6.1 General . 9
6.2 Performance test . 10
6.3 Uncertainty contribution for IEC 60060-2 and/or IEC 62475 . 10
7 Record of performance of the software . 11
Annex A (normative) Reference values and acceptance limits for the parameters of
TDG impulses . 12
Annex B (informative) Alternative method for uncertainty estimation . 25
Bibliography . 32

Table 1 – References to impulse voltage parameter definitions . 8
Table 2 – References to impulse current parameter definitions . 9
Table 3 – Standard uncertainty contributions of software to the overall uncertainty
according to the simplified procedure . 11
Table A.1 – Reference values and their acceptance limits for full lightning impulses (LI)
(1 of 6) . 12
Table A.2 – Reference values and their acceptance limits for chopped lightning

impulses (LIC) (1 of 2) . 18
Table A.3 – Reference values and their acceptance limits for switching impulses (SI) . 20
Table A.4 – Reference values and their acceptance limits for current impulses (IC) (1
of 2) . 21
Table A.5 – Reference values and their acceptance limits for oscillating lightning
impulses (OLI) . 23
Table A.6 – Reference values and their acceptance limits for oscillating switching
impulses (OSI) . 24
Table B.1 – Expanded uncertainties (U ) of the lightning impulse reference values (1 of
x
2) . 27
Table B.2 – Expanded uncertainties (U ) of the chopped lightning impulse reference
x
values . 28
Table B.3 – Expanded uncertainties (U ) of the switching impulse reference values . 29
x
Table B.4 – Expanded uncertainties (U ) of the impulse current reference values . 29
x
Table B.5 – Expanded uncertainties (U ) of the oscillating lightning impulse reference
x
values . 29
Table B.6 – Expanded uncertainties (U ) of the oscillating switching impulse reference
x
values . 30
Table B.7 – Example of uncertainty estimation . 30

61083-2 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSTRUMENTS AND SOFTWARE USED FOR MEASUREMENT
IN HIGH-VOLTAGE AND HIGH-CURRENT TESTS –

Part 2: Requirements for software for tests
with impulse voltages and currents

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61083-2 has been prepared by IEC technical committee 42: High-
voltage and high-current testing techniques.
This second edition cancels and replaces the first edition, published in 1996, and constitutes
a technical revision.
The main changes with respect to the previous edition are listed below:
a) the test data generator software has been updated:
b) the number of reference impulse waveforms included in the test data generator has been
significantly increased;
c) all reference values have been recalculated according to new definitions in
IEC 60060-1and IEC 62475;
– 4 – 61083-2 © IEC:2013
d) methods for estimating the uncertainty of parameter evaluation has been introduced and
are in line with the procedure introduced in IEC 60060-2.
The text of this standard is based on the following documents:
FDIS Report on voting
42/318/FDIS 42/321/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 61083 series, published under the general title Instruments
and software used for measurement in high-voltage and high-current tests, can be found on
the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61083-2 © IEC:2013 – 5 –
INTRODUCTION
IEC 61083-1 specifies the test requirements for digital recorders. Digital recorders, like
analogue oscilloscopes, are susceptible to changes in their characteristics. However, the
more stringent testing (than is practical for analogue oscilloscopes) specified for digital
recorders for standard impulse voltage and current measurement has led to the accuracy of
digital recorders being more clearly demonstrated.
This part of IEC 61083 applies to software used to process digital records to provide the
values of the relevant impulse parameters. The raw data are retained for comparison with the
processed data. However, since the parameters of the test impulse (including the test value)
are to be read from the processed data, it is important to establish tests to ensure that the
reading of parameters is adequately performed. The problem is how to ensure this, while
permitting users to develop a wide range of techniques.
This problem is further complicated by the different needs of various users, ranging from
single-purpose test laboratories, for example those of a cable manufacturer who may only test
a few objects which are capacitive, to large high-voltage test/research laboratories, which
may perform tests on a very wide range of objects, which have a correspondingly wide range
of impedances.
The approach taken in this part of IEC 61083 is to provide, from a test data generator
software, waveforms (and ranges of their parameters) which a user can employ to verify that a
procedure gives values within the specified ranges. To reduce the amount of testing required,
the waveforms are divided into groups, and the user needs only to check those groups that
are appropriate for the high-voltage and/or high-current tests to be performed in his/her
laboratory.
New definitions for lightning impulse parameters and switching impulse time-to-peak
evaluation are introduced in IEC 60060-1. The changes in these definitions have lead to
significant changes in some of the reference values in this standard. The number of impulse
records in the test data generator has been increased to cover a wider range of impulse
shapes seen in on-site testing.

– 6 – 61083-2 © IEC:2013
INSTRUMENTS AND SOFTWARE USED FOR MEASUREMENT
IN HIGH-VOLTAGE AND HIGH-CURRENT TESTS –

Part 2: Requirements for software for tests
with impulse voltages and currents

1 Scope and object
This part of IEC 61083 is applicable to software used for evaluation of impulse parameters
from recorded impulse voltages and currents. It provides test waveforms and reference values
for the software required to meet the measuring uncertainties and procedures specified in
IEC 60060-1, IEC 60060-2, IEC 60060-3 and IEC 62475.
Hardware with built-in firmware that cannot accept external numerical input data is not
covered by this standard.
The object of this standard is to
• establish the tests which are necessary to show that the performance of the software
complies with the requirements of the relevant IEC standards;
• define the terms specifically related to digital processing;
• specify reference values and the acceptance limits for the reference impulses;
• specify the requirements for the record of performance;
• define the methods to assess the contribution of software to the measurement uncertainty.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60060-2, High-voltage test techniques – Part 2: Measuring systems
IEC 60060-3:2006, High-voltage test techniques – Part 3: Definitions and requirements for
on–site testing
IEC 61083-1:2001, Instruments and software used for measurement in high-voltage impulse
tests – Part 1: Requirements for instruments
IEC 62475:2010, High-current test techniques – Definitions and requirements for test currents
and measuring systems
ISO/IEC Guide 98-3, Uncertainty of measurement – Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)

61083-2 © IEC:2013 – 7 –
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE References to definitions of relevant impulse parameters, as shown in the relevant clauses of
IEC 60060-1:2010, IEC 60060-3:2006 and IEC 62475:2010 are listed in Tables 1 and 2.
3.1
raw data
original record of sampled and quantized information obtained when a digital recorder
converts an analogue signal into a digital form, possibly corrected for offset or multiplied by a
scale factor
3.2
processed data
data obtained by any processing (other than correction for offset and/or multiplying by a scale
factor) of the raw data
[SOURCE: IEC 61083-1:2001, definition 1.3.3.5, modified – "constant scale factor" replaced
by "scale factor"; NOTE not retained]
3.3
internal noise level
standard deviation of the samples recorded when a constant voltage is applied to the input of
the digital recorder
3.4
reference impulse
waveform supplied by the test data generator (TDG)
3.5
sampling rate
sampling frequency
number of samples of a signal taken per unit time
[SOURCE: IEC 60050-704:1993, definition 704-23-03]
3.6
resolution (in digital processing)
measure of the accuracy with which a digital system can distinguish between the magnitudes
of two samples of a signal
Note 1 to entry: Resolution is usually expressed as the number of bits necessary to express in binary form the
maximum number of possible different signal levels which can be recognized by the system.
[SOURCE: IEC 60050-807:1998, definition 807-01-02]
3.7
test data generator
TDG
computer program that generates digital reference data files, representative of synthesized
and recorded impulse waveforms

– 8 – 61083-2 © IEC:2013
Table 1 – References to impulse voltage parameter definitions
IEC 60060-1:2010 IEC 60060-3:2006
U T β T T T U U T T T f
t p 1 c 2 e t p 1 2
Impulse group/
Value of Relative Time to Average Value of Time to
Evaluation algorithm Time to Front Time to Extreme Time to Front Oscillation
the test overshoot half- rate of the test half-
peak time chopping value peak time frequency
voltage magnitude value rise voltage value
Full lightning impulse 7.1.15, 7.1.17, 7.1.18, 7.1.22,
7.1.9 7.1.20 (7.2.4) (7.2.5) (7.2.7)
voltage (LI) Annex B Annex B Annex B Annex B
Front chopped lightning
7.1.15,
impulse voltage  7.1.27 7.1.9 7.1.20
7.2.6
(LIC-A1, LIC-M1 to LIC-M3)
Tail chopped lightning
7.1.15, 7.1.17, 7.1.18, 7.1.27,
impulse voltage  7.1.9 7.1.20
Annex B Annex B Annex B Annex B
(LIC-M4 to LIC-M5)
Switching impulse voltage
8.1.2 8.1.3  8.1.5  (8.2.3) (8.2.4) (8.2.5)
(SI)
Oscillating lightning impulse
voltage     7.2.4 7.2.5 7.2.7 8.2.6
(OLI)
Oscillating switching
impulse voltage     8.2.3 8.2.4 8.2.5 8.2.6
(OSI)
NOTE Some definitions of parameters (shown in parenthesis) in IEC 60060-3:2006 are different from those in IEC 60060-1:2010. For IEC 60060-3, reference values are only
provided for oscillating lightning and oscillating switching impulse parameters.

61083-2 © IEC:2013 – 9 –
Table 2 – References to impulse current parameter definitions
IEC 62475:2010
I T T T T
p 1 2 d t
Impulse group /
Peak value Time to Total
Evaluation algorithm
Front time Duration
of current half-value duration
Exponential impulse current
10.2.3 10.2.4 10.2.6
(IC-M1 to IC-M7, IC-M9)
Rectangular impulse current
10.2.3  10.2.7 10.2.8
(IC-M8)
4 Test data generator (TDG)
4.1 Principle
The test data generator (TDG) is a computer program that generates digital reference data
files, representative of both synthetic and recorded impulse waveforms. These reference
impulses shall be processed by the software under test, and the parameters evaluated from
the processed data shall fall within the acceptance limits given in Annex A. In this way the
performance of the software can be verified.
The TDG is an integral part of this standard and is provided as compiled code for a computer
operating system. TDG is a menu-driven pro
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