Instrument transformers -- Part 1: General requirements

This International Standard is applicable to newly manufactured instrument transformers with analogue or digital output for use with electrical measuring instruments or electrical protective devices having rated frequencies from 15 Hz to 100 Hz. This standard is a product family standard and covers general requirements only. For each kind of instrument transformer the product standard is composed by this standard and the relevant specific standard.

Messwandler -- Teil 1: Allgemeine Bestimmungen

Transformateurs de mesure -- Partie 1: Exigences générales

La présente Norme internationale s'applique aux transformateurs de mesure de construction récente équipés d'une sortie analogique ou numérique, destinés à être utilisés avec des appareils de mesure électriques ou des dispositifs de protection électriques de fréquences assignées comprises entre 15 Hz et 100 Hz. Le comité d'études 38 a décidé de restructurer l'ensemble des normes indépendantes de la série CEI 60044 et de le transformer en un nouvel ensemble de normes composé de documents d'Exigence générales et de documents d'Exigences Spécifiques. La présente norme est la première édition de cette nouvelle série et peut être considérée comme une Norme de famille de produit. Elle contient les Exigences générales pour des transformateurs de mesure et doit être lue conjointement avec les Normes d'Exigences spécifiques appropriées pour le transformateur de mesure concerné",PE

Instrumentni transformatorji - 1. del: Splošne zahteve (IEC 61869-1:2007)

General Information

Status
Published
Publication Date
17-Nov-2009
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
06-Oct-2009
Due Date
11-Dec-2009
Completion Date
18-Nov-2009

Buy Standard

Standard
SIST EN 61869-1:2009
English language
70 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day
Standard
SIST EN 61869-1:2009
English language
70 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 61869-1:2009
01-december-2009
Instrumentni transformatorji - 1. del: Splošne zahteve (IEC 61869-1:2007)
Instrument transformers -- Part 1: General requirements
Messwandler -- Teil 1: Allgemeine Bestimmungen
Transformateurs de mesure -- Partie 1: Exigences générales
Ta slovenski standard je istoveten z: EN 61869-1:2009
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
SIST EN 61869-1:2009 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61869-1:2009
---------------------- Page: 2 ----------------------
SIST EN 61869-1:2009
EUROPEAN STANDARD
EN 61869-1
NORME EUROPÉENNE
September 2009
EUROPÄISCHE NORM
ICS 17.220.20
English version
Instrument transformers -
Part 1: General requirements
(IEC 61869-1:2007, modified)
Transformateurs de mesure - Messwandler -
Partie 1: Exigences générales Teil 1: Allgemeine Anforderungen
(CEI 61869-1:2007, modifiée) (IEC 61869-1:2007, modifiziert)

This European Standard was approved by CENELEC on 2009-07-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61869-1:2009 E
---------------------- Page: 3 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 2 -
Foreword

The text of document 38/360/FDIS, future edition 1 of IEC 61869-1, prepared by IEC TC 38, Instrument

transformers, was submitted to the IEC-CENELEC parallel vote and, together with a number of editorial

modifications drafted by the Technical Committee CENELEC TC 38X, Instrument transformers, to answer

the EMC Consultant’s remarks, it was approved by CENELEC as EN 61869-1 on 2009-07-01.

The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-07-01

This European Standard has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association and covers essential requirements of

EC Directive 2004/108/EC. See Annex ZZ.

IEC TC 38 decided to restructure the whole set of stand-alone standards in the IEC 60044 series and

transform it into a new set of standards composed of general requirements documents and specific

requirements documents.

This standard is the first issue of this new series and can be regarded as a Product Family standard. It

contains the general requirements for instrument transformers and shall be read in conjunction with the

relevant specific requirements standard for the instrument transformer concerned.

An overview of the planned set of standards is given below:
PRODUCT FAMILY STANDARDS PRODUCT PRODUCTS OLD
STANDARD STANDARD
61869-2 CURRENT 60044-1
TRANSFORMERS
61869-3 INDUCTIVE VOLTAGE 60044-2
TRANSFORMERS
61869-4 COMBINED 60044-3
TRANSFORMERS
61869-5 CAPACITIVE VOLTAGE 60044-5
TRANSFORMERS
61869-1
61869-6 CURRENT 60044-6
TRANSFORMERS FOR
GENERAL
TRANSIENT
REQUIREMENTS FOR
PERFORMANCE
INSTRUMENT
TRANSFORMERS
61869-9 61869-7 ELECTRONIC 60044-7
VOLTAGE
ADDITIONAL
TRANSFORMERS
REQUIREMENTS AND
DIGITAL INTERFACE
61869-8 ELECTRONIC 60044-8
FOR ELECTRONIC
CURRENT
INSTRUMENT
TRANSFORMERS
TRANSFORMERS
61869-10 LOW-POWER STAND-
ALONE CURRENT
SENSORS
---------------------- Page: 4 ----------------------
SIST EN 61869-1:2009
- 3 - EN 61869-1:2009

This standard covers all general requirements formerly found in the stand-alone standards of the

EN 60044 series. Additionally, it introduces some technical innovations:
– requirements for gas-insulated instrument transformers,
– additional special tests,
– requirements for internal arc fault protection,
– requirements for degrees of protection by enclosure,
– requirements for resistance to corrosion,
– requirements for safety and environmental concerns.
Annexes ZA and ZZ have been added by CENELEC.
__________
---------------------- Page: 5 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 4 -
Endorsement notice

The text of the International Standard IEC 61869-1:2007 was approved by CENELEC as a European

Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
6 Design and construction
6.11.1 Replace the second paragraph by:

For instrument transformers the following EMC requirements and tests are specified:

– requirements for emission, Radio Interference Voltage (RIV) included for high voltage parts of the

equipment.;

– requirements for immunity, only applicable to electronic parts of the equipment;

– requirements for transmitted overvoltages.
6.11.2 Delete the note.
6.11.3 Replace the second paragraph by:
Refer to specific product standards for details.
7 Tests
7.2.5.2 Replace the text of this subclause by:
Refer to specific product standards for details.
Bibliography
Add the following notes for the standards indicated:

IEC 60038 NOTE Harmonized as HD 472 S2:1989 (modified), with the following title “Nominal voltages for low-voltage

public electricity supply systems”
IEC 60068-2 NOTE Harmonized in EN 60068-2 series (not modified).
IEC 60071-2 NOTE Harmonized as EN 60071-2:1997 (not modified).
IEC 60255-22-1 NOTE Harmonized as EN 60255-22-1:2008 (not modified).
IEC 60565 NOTE Harmonized as EN 60565:2007 (not modified).
IEC 60599 NOTE Harmonized as EN 60599:1999 (not modified).
IEC 60660 NOTE Harmonized as EN 60660:1999 (not modified).
IEC 60664-1 NOTE Harmonized as EN 60664-1:2007 (not modified).
IEC 60869 NOTE Harmonized in EN 60869 series (not modified).
IEC 61000 NOTE Harmonized in EN 61000 series (modified).
IEC 61109 NOTE Harmonized as EN 61109:2008 (not modified).
IEC 61161 NOTE Harmonized as EN 61161:2007 (not modified).
IEC 61181 NOTE Harmonized as EN 61181:2007 (not modified).
IEC 62271-100 NOTE Harmonized as EN 62271-100:2009 (not modified).
CISPR 11 NOTE Harmonized as EN 55011:2007 (modified).
CISPR 16-1-1 NOTE Harmonized as EN 55016-1-1:2007 (not modified).
ISO 9001 NOTE Harmonized as EN ISO 9001:2008 (not modified).
__________
---------------------- Page: 6 ----------------------
SIST EN 61869-1:2009
- 5 - EN 61869-1:2009
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. 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
1) 2)
IEC 60060-1 - High-voltage test techniques - HD 588.1 S1 1991
Part 1: General definitions and test
requirements
1) 2)
IEC 60068-2-11 - Environmental testing - EN 60068-2-11 1999
Part 2: Tests - Test Ka: Salt mist
1) 2)
IEC 60068-2-17 - Environmental testing - EN 60068-2-17 1994
Part 2: Tests - Test Q: Sealing
1) 2)
IEC 60068-2-75 - Environmental testing - EN 60068-2-75 1997
Part 2-75: Tests - Test Eh: Hammer tests
1) 2)
IEC 60071-1 - Insulation co-ordination - EN 60071-1 2006
Part 1: Definitions, principles and rules
1) 2)
IEC 60085 - Electrical insulation - Thermal evaluation EN 60085 2008
and designation
1) 2)
IEC 60270 - High-voltage test techniques - Partial EN 60270 2001
discharge measurements
1) 2)
IEC 60296 - Fluids for electrotechnical applications - EN 60296 2004
Unused mineral insulating oils for + corr. September 2004
transformers and switchgear
1) 2)
IEC 60376 - Specification of technical grade sulfur EN 60376 2005
hexafluoride (SF ) for use in electrical
equipment
IEC 60417 Data- Graphical symbols for use on equipment - -
base
IEC 60455 Series Resin based reactive compounds used for EN 60455 Series
electrical insulation
1) 2)
IEC 60480 - Guidelines for the checking and treatment of EN 60480 2004
sulphur hexafluoride (SF ) taken from
electrical equipment and specification for its
re-use
1) 2)
IEC 60529 - Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr. May 1993
1) 2)
IEC 60567 - Oil-filled electrical equipment - Sampling of EN 60567 2005
gases and of oil for analysis of free and
dissolved gases - Guidance
Undated reference.
Valid edition at date of issue.
---------------------- Page: 7 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 6 -
Publication Year Title EN/HD Year
1) 3)
IEC 60694 - Common specifications for high-voltage EN 60694 1996
switchgear and controlgear standards + corr. May 1999
1) 2)
IEC 60695-1-1 - Fire hazard testing - EN 60695-1-1 2000
Part 1-1: Guidance for assessing the fire
hazard of electrotechnical products - General
guidelines
1) 2)
IEC 60695-1-30 - Fire hazard testing - EN 60695-1-30 2008
Part 1-30: Guidance for assessing the fire
hazard of electrotechnical products -
Preselection testing process - General
guidelines
1) 2)
IEC 60695-7-1 - Fire hazard testing - EN 60695-7-1 2004
Part 7-1: Toxicity of fire effluent - General
guidance
1) 2)
IEC 60721-3-3 - Classification of environmental conditions - EN 60721-3-3 1995
Part 3: Classification of groups of
environmental parameters and their
severities -
Section 3: Stationary use at weatherprotected
locations
IEC/TR 60815 - Guide for the selection of insulators in - -
respect of polluted conditions
1) 2)
IEC 60867 - Insulating liquids - Specifications for unused EN 60867 1994
liquids based on synthetic aromatic
hydrocarbons
1) 2)
IEC 61462 - Composite hollow insulators - Pressurized EN 61462 2007
and unpressurized insulators for use in
electrical equipment with rated voltage greater
than 1 000 V - Definitions, test methods,
acceptance criteria and design
recommendations
IEC/TR 61634 - High-voltage switchgear and controlgear - - -
Use and handling of sulphur hexafluoride
(SF ) in high-voltage switchgear and
controlgear
1) 2)
IEC 62155 (mod) - Hollow pressurized and unpressurized EN 62155 2003
ceramic and glass insulators for use in
electrical equipment with rated voltages
greater than 1 000 V
1) 2)
IEC 62262 - Degrees of protection provided by EN 62262 2002
enclosures for electrical equipment against
external mechanical impacts (IK code)
1) 5)
IEC 62271-2 - High-voltage switchgear and controlgear - EN 62271-2 2003
Part 2: Seismic qualification for rated voltages
of 72,5 kV and above
1) 2)
IEC 62271-203 - High-voltage switchgear and controlgear - EN 62271-203 2004
Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV

EN 60694:1996 is superseded by EN 62271-1:2008, which is based on IEC 62271-1:2007.

IEC/TR 61643 is superseded by IEC/TR 62271-303:2008, which is harmonized as CLC/TR 62271-303:2009.

EN 62271-2:2003 is superseded by EN 62271-207:2007, which is based on IEC 62271-207:2007.

---------------------- Page: 8 ----------------------
SIST EN 61869-1:2009
- 7 - EN 61869-1:2009
Publication Year Title EN/HD Year
CISPR 18-2 - Radio interference characteristics of - -
overhead power lines and high-voltage
equipment -
Part 2: Methods of measurement and
procedure for determining limits
IEC Guide 109 - Environmental aspects - Inclusion in - -
electrotechnical product standards
ISO 3231 - Paints and varnishes - Determination of - -
resistance to humid atmospheres containing
sulphur dioxide
---------------------- Page: 9 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 8 -
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives

This European Standard has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association and within its scope the standard covers all

relevant essential requirements as given in Article 1 of Annex I of the EC Directive 2004/108/EC.

Compliance with this standard provides one means of conformity with the specified essential

requirements of the Directives concerned.

WARNING: Other requirements and other EC Directives may be applicable to the products falling within

the scope of this standard.

NOTE EN 61869-1:2009 does not give presumption of conformity without another part of the standard.

___________
---------------------- Page: 10 ----------------------
SIST EN 61869-1:2009
IEC 61869-1
Edition 1.0 2007-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instrument transformers –
Part 1: General requirements
Transformateurs de mesure –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 17.220.20 ISBN 2-8318-9322-4
---------------------- Page: 11 ----------------------
SIST EN 61869-1:2009
– 2 – 61869-1 © IEC:2007
CONTENTS

FOREWORD...........................................................................................................................6

1 Scope...............................................................................................................................9

2 Normative references .......................................................................................................9

3 Terms and definitions .....................................................................................................10

3.1 General definitions ................................................................................................11

3.2 Definitions related to dielectric ratings...................................................................11

3.3 Definitions related to current ratings ......................................................................13

3.4 Definitions related to accuracy ..............................................................................13

3.5 Definitions related to other ratings.........................................................................14

3.6 Definitions related to gas insulation.......................................................................14

3.7 Index of abbreviations ...........................................................................................15

4 Normal and special service conditions ............................................................................15

4.1 General .................................................................................................................15

4.2 Normal service conditions .....................................................................................16

4.2.1 Ambient air temperature ............................................................................16

4.2.2 Altitude......................................................................................................16

4.2.3 Vibrations or earth tremors ........................................................................16

4.2.4 Other service conditions for indoor instrument transformers ......................16

4.2.5 Other service conditions for outdoor instrument transformers ....................17

4.3 Special service conditions .....................................................................................17

4.3.1 General .....................................................................................................17

4.3.2 Altitude......................................................................................................17

4.3.3 Ambient temperature .................................................................................17

4.3.4 Vibrations or earth tremors ........................................................................17

4.3.5 Earthquakes ..............................................................................................17

4.4 System earthing ....................................................................................................18

5 Ratings...........................................................................................................................18

5.1 General .................................................................................................................18

5.2 Highest voltage for equipment ...............................................................................18

5.3 Rated insulation levels ..........................................................................................20

5.3.1 General .....................................................................................................20

5.3.2 Rated primary terminal insulation level ......................................................20

5.3.3 Other requirements for primary terminals insulation...................................20

5.3.4 Between-section insulation requirements...................................................21

5.3.5 Insulation requirements for secondary terminals ........................................21

5.4 Rated frequency....................................................................................................21

5.5 Rated output .........................................................................................................21

5.6 Rated accuracy class ............................................................................................21

6 Design and construction .................................................................................................21

6.1 Requirements for liquids used in equipment ..........................................................21

6.1.1 General .....................................................................................................21

6.1.2 Liquid quality .............................................................................................21

6.1.3 Liquid level device .....................................................................................21

6.1.4 Liquid tightness .........................................................................................21

6.2 Requirements for gases used in equipment ...........................................................21

---------------------- Page: 12 ----------------------
SIST EN 61869-1:2009
61869-1 © IEC:2007 – 3 –

6.2.1 General .....................................................................................................21

6.2.2 Gas quality ................................................................................................22

6.2.3 Gas monitoring device ...............................................................................22

6.2.4 Gas tightness ............................................................................................22

6.2.5 Pressure relief device................................................................................23

6.3 Requirements for solid materials used in equipment ..............................................23

6.4 Requirements for temperature rise of parts and components .................................23

6.4.1 General .....................................................................................................23

6.4.2 Influence of altitude on temperature-rise....................................................24

6.5 Requirements for earthing of equipment ................................................................25

6.5.1 General .....................................................................................................25

6.5.2 Earthing of the enclosure...........................................................................25

6.5.3 Electrical continuity ...................................................................................25

6.6 Requirements for the external insulation................................................................25

6.6.1 Pollution ....................................................................................................25

6.6.2 Altitude......................................................................................................26

6.7 Mechanical requirements.......................................................................................27

6.8 Multiple chopped impulse on primary terminals .....................................................28

6.9 Internal arc fault protection requirements ..............................................................28

6.10 Degrees of protection by enclosures......................................................................29

6.10.1 General .....................................................................................................29

6.10.2 Protection of persons against access to hazardous parts and

protection of the equipment against ingress of solid foreign objects...........29

6.10.3 Protection against ingress of water............................................................29

6.10.4 Indoor instrument transformers..................................................................30

6.10.5 Outdoor instrument transformers ...............................................................30

6.10.6 Protection of equipment against mechanical impact under normal

service conditions......................................................................................30

6.11 Electromagnetic Compatibility (EMC) ....................................................................30

6.11.1 General .....................................................................................................30

6.11.2 Requirement for Radio Interference Voltage (RIV) .....................................30

6.11.3 Requirements for immunity ........................................................................31

6.11.4 Requirement for transmitted overvoltages..................................................31

6.12 Corrosion ..............................................................................................................32

6.13 Markings ...............................................................................................................33

6.14 Fire hazard............................................................................................................33

7 Tests ..............................................................................................................................33

7.1 General .................................................................................................................33

7.1.1 Classification of tests ................................................................................33

7.1.2 List of tests................................................................................................34

7.1.3 Sequence of tests......................................................................................35

7.2 Type tests .............................................................................................................35

7.2.1 General .....................................................................................................35

7.2.2 Temperature-rise test ................................................................................36

7.2.3 Impulse voltage withstand test on primary terminals ..................................37

7.2.4 Wet test for outdoor type transformers.......................................................38

7.2.5 Electromagnetic Compatibility (EMC) tests ................................................38

7.2.6 Test for accuracy.......................................................................................40

7.2.7 Verification of the degree of protection by enclosures................................40

---------------------- Page: 13 ----------------------
SIST EN 61869-1:2009
– 4 – 61869-1 © IEC:2007

7.2.8 Enclosure tightness test at ambient temperature .......................................41

7.2.9 Pressure test for the enclosure ..................................................................41

7.3 Routine tests .........................................................................................................41

7.3.1 Power-frequency voltage withstand tests on primary terminals ..................41

7.3.2 Partial discharge measurement .................................................................42

7.3.3 Power-frequency voltage withstand tests between sections .......................44

7.3.4 Power-frequency voltage withstand tests on secondary terminals ..............44

7.3.5 Test for accuracy.......................................................................................44

7.3.6 Verification of markings .............................................................................44

7.3.7 Enclosure tightness test at ambient temperature .......................................45

7.3.8 Pressure test for the enclosure ..................................................................45

7.4 Special tests .........................................................................................................45

7.4.1 Chopped impulse voltage withstand test on primary terminals ...................45

7.4.2 Multiple chopped impulse test on primary terminals ...................................46

7.4.3 Measurement of capacitance and dielectric dissipation factor ....................47

7.4.4 Transmitted overvoltage test .....................................................................47

7.4.5 Mechanical tests........................................................................................49

7.4.6 Internal arc fault test..................................................................................50

7.4.7 Enclosure tightness tests at low and high temperatures.............................51

7.4.8 Gas dew point test.....................................................................................52

7.4.9 Corrosion test............................................................................................52

7.4.10 Fire hazard test .........................................................................................52

7.5 Sample tests .........................................................................................................52

8 Rules for transport, storage, erection, operation and maintenance .................................53

9 Safety.............................................................................................................................53

10 Influence of products on the natural environment ...........................................................53

Annex A (normative) Identification of test specimen .............................................................54

Annex B (informative) Rules for transport, storage, erection, operation and

maintenance .........................................................................................................................55

Annex C (informative) Fire hazard .......................................................................................60

Annex D (informative) Sample test.......................................................................................61

Bibliography..........................................................................................................................62

Figure 1 – Altitude correction factor for the temperature rise.................................................25

Figure 2 – Altitude correction factor ......................................................................................27

Figure 3 – Transmitted overvoltages measurement: Test impulse waveforms.......................32

Figure 4 – RIV measuring circuit ...........................................................................................39

Figure 5 – Test circuit for partial discharge measurement .....................................................42

Figure 6 – Alternative circuit for partial discharge measurement ......................................

...

SLOVENSKI STANDARD
SIST EN 61869-1:2009
01-december-2009
Merilni transformatorji - 1. del: Splošne zahteve (IEC 61869-1:2007)
Instrument transformers -- Part 1: General requirements
Messwandler -- Teil 1: Allgemeine Bestimmungen
Transformateurs de mesure -- Partie 1: Exigences générales
Ta slovenski standard je istoveten z: EN 61869-1:2009
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
SIST EN 61869-1:2009 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61869-1:2009
---------------------- Page: 2 ----------------------
SIST EN 61869-1:2009
EUROPEAN STANDARD
EN 61869-1
NORME EUROPÉENNE
September 2009
EUROPÄISCHE NORM
ICS 17.220.20
English version
Instrument transformers -
Part 1: General requirements
(IEC 61869-1:2007, modified)
Transformateurs de mesure - Messwandler -
Partie 1: Exigences générales Teil 1: Allgemeine Anforderungen
(CEI 61869-1:2007, modifiée) (IEC 61869-1:2007, modifiziert)

This European Standard was approved by CENELEC on 2009-07-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61869-1:2009 E
---------------------- Page: 3 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 2 -
Foreword

The text of document 38/360/FDIS, future edition 1 of IEC 61869-1, prepared by IEC TC 38, Instrument

transformers, was submitted to the IEC-CENELEC parallel vote and, together with a number of editorial

modifications drafted by the Technical Committee CENELEC TC 38X, Instrument transformers, to answer

the EMC Consultant’s remarks, it was approved by CENELEC as EN 61869-1 on 2009-07-01.

The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-07-01

This European Standard has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association and covers essential requirements of

EC Directive 2004/108/EC. See Annex ZZ.

IEC TC 38 decided to restructure the whole set of stand-alone standards in the IEC 60044 series and

transform it into a new set of standards composed of general requirements documents and specific

requirements documents.

This standard is the first issue of this new series and can be regarded as a Product Family standard. It

contains the general requirements for instrument transformers and shall be read in conjunction with the

relevant specific requirements standard for the instrument transformer concerned.

An overview of the planned set of standards is given below:
PRODUCT FAMILY STANDARDS PRODUCT PRODUCTS OLD
STANDARD STANDARD
61869-2 CURRENT 60044-1
TRANSFORMERS
61869-3 INDUCTIVE VOLTAGE 60044-2
TRANSFORMERS
61869-4 COMBINED 60044-3
TRANSFORMERS
61869-5 CAPACITIVE VOLTAGE 60044-5
TRANSFORMERS
61869-1
61869-6 CURRENT 60044-6
TRANSFORMERS FOR
GENERAL
TRANSIENT
REQUIREMENTS FOR
PERFORMANCE
INSTRUMENT
TRANSFORMERS
61869-9 61869-7 ELECTRONIC 60044-7
VOLTAGE
ADDITIONAL
TRANSFORMERS
REQUIREMENTS AND
DIGITAL INTERFACE
61869-8 ELECTRONIC 60044-8
FOR ELECTRONIC
CURRENT
INSTRUMENT
TRANSFORMERS
TRANSFORMERS
61869-10 LOW-POWER STAND-
ALONE CURRENT
SENSORS
---------------------- Page: 4 ----------------------
SIST EN 61869-1:2009
- 3 - EN 61869-1:2009

This standard covers all general requirements formerly found in the stand-alone standards of the

EN 60044 series. Additionally, it introduces some technical innovations:
– requirements for gas-insulated instrument transformers,
– additional special tests,
– requirements for internal arc fault protection,
– requirements for degrees of protection by enclosure,
– requirements for resistance to corrosion,
– requirements for safety and environmental concerns.
Annexes ZA and ZZ have been added by CENELEC.
__________
---------------------- Page: 5 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 4 -
Endorsement notice

The text of the International Standard IEC 61869-1:2007 was approved by CENELEC as a European

Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
6 Design and construction
6.11.1 Replace the second paragraph by:

For instrument transformers the following EMC requirements and tests are specified:

– requirements for emission, Radio Interference Voltage (RIV) included for high voltage parts of the

equipment.;

– requirements for immunity, only applicable to electronic parts of the equipment;

– requirements for transmitted overvoltages.
6.11.2 Delete the note.
6.11.3 Replace the second paragraph by:
Refer to specific product standards for details.
7 Tests
7.2.5.2 Replace the text of this subclause by:
Refer to specific product standards for details.
Bibliography
Add the following notes for the standards indicated:

IEC 60038 NOTE Harmonized as HD 472 S2:1989 (modified), with the following title “Nominal voltages for low-voltage

public electricity supply systems”
IEC 60068-2 NOTE Harmonized in EN 60068-2 series (not modified).
IEC 60071-2 NOTE Harmonized as EN 60071-2:1997 (not modified).
IEC 60255-22-1 NOTE Harmonized as EN 60255-22-1:2008 (not modified).
IEC 60565 NOTE Harmonized as EN 60565:2007 (not modified).
IEC 60599 NOTE Harmonized as EN 60599:1999 (not modified).
IEC 60660 NOTE Harmonized as EN 60660:1999 (not modified).
IEC 60664-1 NOTE Harmonized as EN 60664-1:2007 (not modified).
IEC 60869 NOTE Harmonized in EN 60869 series (not modified).
IEC 61000 NOTE Harmonized in EN 61000 series (modified).
IEC 61109 NOTE Harmonized as EN 61109:2008 (not modified).
IEC 61161 NOTE Harmonized as EN 61161:2007 (not modified).
IEC 61181 NOTE Harmonized as EN 61181:2007 (not modified).
IEC 62271-100 NOTE Harmonized as EN 62271-100:2009 (not modified).
CISPR 11 NOTE Harmonized as EN 55011:2007 (modified).
CISPR 16-1-1 NOTE Harmonized as EN 55016-1-1:2007 (not modified).
ISO 9001 NOTE Harmonized as EN ISO 9001:2008 (not modified).
__________
---------------------- Page: 6 ----------------------
SIST EN 61869-1:2009
- 5 - EN 61869-1:2009
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. 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
1) 2)
IEC 60060-1 - High-voltage test techniques - HD 588.1 S1 1991
Part 1: General definitions and test
requirements
1) 2)
IEC 60068-2-11 - Environmental testing - EN 60068-2-11 1999
Part 2: Tests - Test Ka: Salt mist
1) 2)
IEC 60068-2-17 - Environmental testing - EN 60068-2-17 1994
Part 2: Tests - Test Q: Sealing
1) 2)
IEC 60068-2-75 - Environmental testing - EN 60068-2-75 1997
Part 2-75: Tests - Test Eh: Hammer tests
1) 2)
IEC 60071-1 - Insulation co-ordination - EN 60071-1 2006
Part 1: Definitions, principles and rules
1) 2)
IEC 60085 - Electrical insulation - Thermal evaluation EN 60085 2008
and designation
1) 2)
IEC 60270 - High-voltage test techniques - Partial EN 60270 2001
discharge measurements
1) 2)
IEC 60296 - Fluids for electrotechnical applications - EN 60296 2004
Unused mineral insulating oils for + corr. September 2004
transformers and switchgear
1) 2)
IEC 60376 - Specification of technical grade sulfur EN 60376 2005
hexafluoride (SF ) for use in electrical
equipment
IEC 60417 Data- Graphical symbols for use on equipment - -
base
IEC 60455 Series Resin based reactive compounds used for EN 60455 Series
electrical insulation
1) 2)
IEC 60480 - Guidelines for the checking and treatment of EN 60480 2004
sulphur hexafluoride (SF ) taken from
electrical equipment and specification for its
re-use
1) 2)
IEC 60529 - Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr. May 1993
1) 2)
IEC 60567 - Oil-filled electrical equipment - Sampling of EN 60567 2005
gases and of oil for analysis of free and
dissolved gases - Guidance
Undated reference.
Valid edition at date of issue.
---------------------- Page: 7 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 6 -
Publication Year Title EN/HD Year
1) 3)
IEC 60694 - Common specifications for high-voltage EN 60694 1996
switchgear and controlgear standards + corr. May 1999
1) 2)
IEC 60695-1-1 - Fire hazard testing - EN 60695-1-1 2000
Part 1-1: Guidance for assessing the fire
hazard of electrotechnical products - General
guidelines
1) 2)
IEC 60695-1-30 - Fire hazard testing - EN 60695-1-30 2008
Part 1-30: Guidance for assessing the fire
hazard of electrotechnical products -
Preselection testing process - General
guidelines
1) 2)
IEC 60695-7-1 - Fire hazard testing - EN 60695-7-1 2004
Part 7-1: Toxicity of fire effluent - General
guidance
1) 2)
IEC 60721-3-3 - Classification of environmental conditions - EN 60721-3-3 1995
Part 3: Classification of groups of
environmental parameters and their
severities -
Section 3: Stationary use at weatherprotected
locations
IEC/TR 60815 - Guide for the selection of insulators in - -
respect of polluted conditions
1) 2)
IEC 60867 - Insulating liquids - Specifications for unused EN 60867 1994
liquids based on synthetic aromatic
hydrocarbons
1) 2)
IEC 61462 - Composite hollow insulators - Pressurized EN 61462 2007
and unpressurized insulators for use in
electrical equipment with rated voltage greater
than 1 000 V - Definitions, test methods,
acceptance criteria and design
recommendations
IEC/TR 61634 - High-voltage switchgear and controlgear - - -
Use and handling of sulphur hexafluoride
(SF ) in high-voltage switchgear and
controlgear
1) 2)
IEC 62155 (mod) - Hollow pressurized and unpressurized EN 62155 2003
ceramic and glass insulators for use in
electrical equipment with rated voltages
greater than 1 000 V
1) 2)
IEC 62262 - Degrees of protection provided by EN 62262 2002
enclosures for electrical equipment against
external mechanical impacts (IK code)
1) 5)
IEC 62271-2 - High-voltage switchgear and controlgear - EN 62271-2 2003
Part 2: Seismic qualification for rated voltages
of 72,5 kV and above
1) 2)
IEC 62271-203 - High-voltage switchgear and controlgear - EN 62271-203 2004
Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV

EN 60694:1996 is superseded by EN 62271-1:2008, which is based on IEC 62271-1:2007.

IEC/TR 61643 is superseded by IEC/TR 62271-303:2008, which is harmonized as CLC/TR 62271-303:2009.

EN 62271-2:2003 is superseded by EN 62271-207:2007, which is based on IEC 62271-207:2007.

---------------------- Page: 8 ----------------------
SIST EN 61869-1:2009
- 7 - EN 61869-1:2009
Publication Year Title EN/HD Year
CISPR 18-2 - Radio interference characteristics of - -
overhead power lines and high-voltage
equipment -
Part 2: Methods of measurement and
procedure for determining limits
IEC Guide 109 - Environmental aspects - Inclusion in - -
electrotechnical product standards
ISO 3231 - Paints and varnishes - Determination of - -
resistance to humid atmospheres containing
sulphur dioxide
---------------------- Page: 9 ----------------------
SIST EN 61869-1:2009
EN 61869-1:2009 - 8 -
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives

This European Standard has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association and within its scope the standard covers all

relevant essential requirements as given in Article 1 of Annex I of the EC Directive 2004/108/EC.

Compliance with this standard provides one means of conformity with the specified essential

requirements of the Directives concerned.

WARNING: Other requirements and other EC Directives may be applicable to the products falling within

the scope of this standard.

NOTE EN 61869-1:2009 does not give presumption of conformity without another part of the standard.

___________
---------------------- Page: 10 ----------------------
SIST EN 61869-1:2009
IEC 61869-1
Edition 1.0 2007-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instrument transformers –
Part 1: General requirements
Transformateurs de mesure –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 17.220.20 ISBN 2-8318-9322-4
---------------------- Page: 11 ----------------------
SIST EN 61869-1:2009
– 2 – 61869-1 © IEC:2007
CONTENTS

FOREWORD...........................................................................................................................6

1 Scope...............................................................................................................................9

2 Normative references .......................................................................................................9

3 Terms and definitions .....................................................................................................10

3.1 General definitions ................................................................................................11

3.2 Definitions related to dielectric ratings...................................................................11

3.3 Definitions related to current ratings ......................................................................13

3.4 Definitions related to accuracy ..............................................................................13

3.5 Definitions related to other ratings.........................................................................14

3.6 Definitions related to gas insulation.......................................................................14

3.7 Index of abbreviations ...........................................................................................15

4 Normal and special service conditions ............................................................................15

4.1 General .................................................................................................................15

4.2 Normal service conditions .....................................................................................16

4.2.1 Ambient air temperature ............................................................................16

4.2.2 Altitude......................................................................................................16

4.2.3 Vibrations or earth tremors ........................................................................16

4.2.4 Other service conditions for indoor instrument transformers ......................16

4.2.5 Other service conditions for outdoor instrument transformers ....................17

4.3 Special service conditions .....................................................................................17

4.3.1 General .....................................................................................................17

4.3.2 Altitude......................................................................................................17

4.3.3 Ambient temperature .................................................................................17

4.3.4 Vibrations or earth tremors ........................................................................17

4.3.5 Earthquakes ..............................................................................................17

4.4 System earthing ....................................................................................................18

5 Ratings...........................................................................................................................18

5.1 General .................................................................................................................18

5.2 Highest voltage for equipment ...............................................................................18

5.3 Rated insulation levels ..........................................................................................20

5.3.1 General .....................................................................................................20

5.3.2 Rated primary terminal insulation level ......................................................20

5.3.3 Other requirements for primary terminals insulation...................................20

5.3.4 Between-section insulation requirements...................................................21

5.3.5 Insulation requirements for secondary terminals ........................................21

5.4 Rated frequency....................................................................................................21

5.5 Rated output .........................................................................................................21

5.6 Rated accuracy class ............................................................................................21

6 Design and construction .................................................................................................21

6.1 Requirements for liquids used in equipment ..........................................................21

6.1.1 General .....................................................................................................21

6.1.2 Liquid quality .............................................................................................21

6.1.3 Liquid level device .....................................................................................21

6.1.4 Liquid tightness .........................................................................................21

6.2 Requirements for gases used in equipment ...........................................................21

---------------------- Page: 12 ----------------------
SIST EN 61869-1:2009
61869-1 © IEC:2007 – 3 –

6.2.1 General .....................................................................................................21

6.2.2 Gas quality ................................................................................................22

6.2.3 Gas monitoring device ...............................................................................22

6.2.4 Gas tightness ............................................................................................22

6.2.5 Pressure relief device................................................................................23

6.3 Requirements for solid materials used in equipment ..............................................23

6.4 Requirements for temperature rise of parts and components .................................23

6.4.1 General .....................................................................................................23

6.4.2 Influence of altitude on temperature-rise....................................................24

6.5 Requirements for earthing of equipment ................................................................25

6.5.1 General .....................................................................................................25

6.5.2 Earthing of the enclosure...........................................................................25

6.5.3 Electrical continuity ...................................................................................25

6.6 Requirements for the external insulation................................................................25

6.6.1 Pollution ....................................................................................................25

6.6.2 Altitude......................................................................................................26

6.7 Mechanical requirements.......................................................................................27

6.8 Multiple chopped impulse on primary terminals .....................................................28

6.9 Internal arc fault protection requirements ..............................................................28

6.10 Degrees of protection by enclosures......................................................................29

6.10.1 General .....................................................................................................29

6.10.2 Protection of persons against access to hazardous parts and

protection of the equipment against ingress of solid foreign objects...........29

6.10.3 Protection against ingress of water............................................................29

6.10.4 Indoor instrument transformers..................................................................30

6.10.5 Outdoor instrument transformers ...............................................................30

6.10.6 Protection of equipment against mechanical impact under normal

service conditions......................................................................................30

6.11 Electromagnetic Compatibility (EMC) ....................................................................30

6.11.1 General .....................................................................................................30

6.11.2 Requirement for Radio Interference Voltage (RIV) .....................................30

6.11.3 Requirements for immunity ........................................................................31

6.11.4 Requirement for transmitted overvoltages..................................................31

6.12 Corrosion ..............................................................................................................32

6.13 Markings ...............................................................................................................33

6.14 Fire hazard............................................................................................................33

7 Tests ..............................................................................................................................33

7.1 General .................................................................................................................33

7.1.1 Classification of tests ................................................................................33

7.1.2 List of tests................................................................................................34

7.1.3 Sequence of tests......................................................................................35

7.2 Type tests .............................................................................................................35

7.2.1 General .....................................................................................................35

7.2.2 Temperature-rise test ................................................................................36

7.2.3 Impulse voltage withstand test on primary terminals ..................................37

7.2.4 Wet test for outdoor type transformers.......................................................38

7.2.5 Electromagnetic Compatibility (EMC) tests ................................................38

7.2.6 Test for accuracy.......................................................................................40

7.2.7 Verification of the degree of protection by enclosures................................40

---------------------- Page: 13 ----------------------
SIST EN 61869-1:2009
– 4 – 61869-1 © IEC:2007

7.2.8 Enclosure tightness test at ambient temperature .......................................41

7.2.9 Pressure test for the enclosure ..................................................................41

7.3 Routine tests .........................................................................................................41

7.3.1 Power-frequency voltage withstand tests on primary terminals ..................41

7.3.2 Partial discharge measurement .................................................................42

7.3.3 Power-frequency voltage withstand tests between sections .......................44

7.3.4 Power-frequency voltage withstand tests on secondary terminals ..............44

7.3.5 Test for accuracy.......................................................................................44

7.3.6 Verification of markings .............................................................................44

7.3.7 Enclosure tightness test at ambient temperature .......................................45

7.3.8 Pressure test for the enclosure ..................................................................45

7.4 Special tests .........................................................................................................45

7.4.1 Chopped impulse voltage withstand test on primary terminals ...................45

7.4.2 Multiple chopped impulse test on primary terminals ...................................46

7.4.3 Measurement of capacitance and dielectric dissipation factor ....................47

7.4.4 Transmitted overvoltage test .....................................................................47

7.4.5 Mechanical tests........................................................................................49

7.4.6 Internal arc fault test..................................................................................50

7.4.7 Enclosure tightness tests at low and high temperatures.............................51

7.4.8 Gas dew point test.....................................................................................52

7.4.9 Corrosion test............................................................................................52

7.4.10 Fire hazard test .........................................................................................52

7.5 Sample tests .........................................................................................................52

8 Rules for transport, storage, erection, operation and maintenance .................................53

9 Safety.............................................................................................................................53

10 Influence of products on the natural environment ...........................................................53

Annex A (normative) Identification of test specimen .............................................................54

Annex B (informative) Rules for transport, storage, erection, operation and

maintenance .........................................................................................................................55

Annex C (informative) Fire hazard .......................................................................................60

Annex D (informative) Sample test.......................................................................................61

Bibliography..........................................................................................................................62

Figure 1 – Altitude correction factor for the temperature rise.................................................25

Figure 2 – Altitude correction factor ......................................................................................27

Figure 3 – Transmitted overvoltages measurement: Test impulse waveforms.......................32

Figure 4 – RIV measuring circuit ...........................................................................................39

Figure 5 – Test circuit for partial discharge measurement .....................................................42

Figure 6 – Alternative circuit for partial discharge measurement ..................

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.