EN 60255-127:2014
(Main)Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection
IEC 60255-127:2010 specifies minimum requirements for over/under voltage relays. The standard includes specification of the protection function, measurement characteristics and time delay characteristics.
Messrelais und Schutzeinrichtungen - Teil 127: Funktionsnorm für Über-/Unterspannungsschutz
Relais de mesure et dispositifs de protection - Partie 127: Exigences fonctionnelles pour les protections à minimum et maximum de tension
La CEI 60255-127:2010 spécifie les exigences minimales relatives aux relais à maximum/minimum de tension. La norme inclut les spécifications de la fonction de protection, les caractéristiques de mesure et les caractéristiques de temporisation.
Merilni releji in zaščitna oprema - 127. del: Funkcijske zahteve za pre- in podnapetostno zaščito (IEC 60255-127:2010)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2014
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Measuring relays and protection equipment - Part 127: Functional requirements for
over/under voltage protection
Relais de mesure et dispositifs de protection -- Partie 127: Exigences fonctionnelles pour
les protections à minimum et maximum de tension
Ta slovenski standard je istoveten z: EN 60255-127:2014
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 60255-127
NORME EUROPÉENNE
January 2014
EUROPÄISCHE NORM
ICS 29.120.70 Supersedes EN 60255-3:1998 + corr. Jan.1998
English version
Measuring relays and protection equipment -
Part 127: Functional requirements for over/under voltage protection
(IEC 60255-127:2010)
Relais de mesure et dispositifs de protection - Messrelais und Schutzeinrichtungen -
Partie 127: Exigences fonctionnelles pour les Teil 127: Funktionsnorm für Über-
protections à minimum et maximum de tension /Unterspannungsschutz
(CEI 60255-127:2010) (IEC 60255-127:2010)
This European Standard was approved by CENELEC on 2013-09-19. 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
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60255-127:2014 E
Foreword
The text of document 95/254/CDV, future edition 1 of IEC 60255-127, prepared by IEC/TC 95
"Measuring relays and protection equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 60255-127:2014.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2014-07-10
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with (dow) 2016-09-19
the document have to be withdrawn
This document supersedes EN 60255-3:1998.
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 60255-127:2010 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 61850 NOTE Harmonized in EN 61850 series.
IEC 61850-7-4 NOTE Harmonized as EN 61850-7-4.
IEC 61850-9-2 NOTE Harmonized as EN 61850-9-2.
- 3 - EN 60255-127:2014
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 60044 series Instrument transformers EN 60044 series
IEC 60255-1 - Measuring relays and protection EN 60255-1 -
equipment
Part 1: Common requirements
IEC 60255-127 ®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Measuring relays and protection equipment –
Part 127: Functional requirements for over/under voltage protection
Relais de mesure et dispositifs de protection –
Partie 127: Exigences fonctionnelles pour les protections à minimum et
maximum de tension
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 29.120.70 ISBN 978-2-88910-077-4
– 2 – 60255-127 © IEC:2010
CONTENTS
FOREWORD.4
1 Scope and object.6
2 Normative references .6
3 Terms and definitions .6
4 Specification of the function.8
4.1 General .8
4.2 Input energising quantities/Energising quantities .8
4.3 Binary input signals .9
4.4 Functional logic .9
4.4.1 Operating characteristics .9
4.4.2 Reset characteristics .13
4.5 Binary output signals .14
4.5.1 Start (pick-up) signal .14
4.5.2 Operate (trip) signal.15
4.5.3 Other binary output signals.15
5 Performance specification .15
5.1 Accuracy related to the characteristic quantity.15
5.2 Accuracy related to the operate time .15
5.3 Accuracy related to the reset time .16
5.4 Transient performance .16
5.4.1 Overshoot time .16
5.4.2 Response to time varying value of the characteristic quantity .16
5.5 Voltage transformer requirements .16
6 Functional test methodology.16
6.1 General .16
6.2 Determination of steady state errors related to the characteristic quantity .17
6.2.1 Accuracy of setting (start) value .17
6.2.2 Reset ratio determination.18
6.3 Determination of steady state errors related to the start and operate time .18
6.4 Determination of steady state errors related to the reset time.19
6.5 Determination of transient performance .20
6.5.1 Overshoot time for undervoltage protection .20
6.5.2 Response to time varying value of the characteristic quantity for
dependent time relays .20
7 Documentation requirements .21
7.1 Type test report.21
7.2 Other user documentation .22
Annex A (informative) Reset time determination for relays with trip output only.23
Bibliography.24
Figure 1 – Simplified protection function block diagram.
Figure 2 – Overvoltage independent time characteristic .9
Figure 3 – Undervoltage independent time characteristic .10
Figure 4 – Dependent time characteristic for overvoltage protection .11
Figure 5 – Dependent time characteristic for undervoltage protection .12
60255-127 © IEC:2010 – 3 –
Figure 6 – Definite time reset characteristic .14
Figure 7 – Definite time reset characteristic (alternative solution with instantaneous
reset after relay operation).14
Figure 8 – Test waveform .21
Figure A.1 – Dependent reset time determination .23
Table 1 – Test points for overvoltage elements .19
Table 2 – Test points for undervoltage elements .19
Table 3 – Test points for overvoltage elements .20
Table 4 – Test points for undervoltage elements .20
Table 5 – Recommended values for the test .21
– 4 – 60255-127 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MEASURING RELAYS AND PROTECTION EQUIPMENT –
Part 127: Functional requirements for over/under voltage protection
FOREWORD
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international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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