Tap-changers - Part 1: Performance requirements and test methods

IEC 60214-1:2014 applies to on-load tap-changers of both resistor and reactor types, de-energized tap-changers, and their motor-drive mechanisms. It applies mainly to tap-changers immersed in mineral insulating oil according to IEC 60296 but may also be used for tap-changers with air or gas insulation or immersed in other insulating liquids insofar as conditions are applicable. It applies mainly to tap-changers with arcing contacts but may also be used for arcing-free on-load tap-changers (such as electronic switching) insofar as conditions are applicable. This part of IEC 60214 applies to power and distribution transformers of all types and also to reactors. It does not apply to transformers and reactors mounted on railway rolling stock. This second edition cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) incorporation of requirements on vacuum type on-load tap-changers, b) incorporation of requirements on gas insulated tap-changers, c) changes in the type tests to fit with the service conditions, d) reference to the newest edition of IEC 60076-3:2013.

Stufenschalter - Teil 1: Leistungsanforderungen und Prüfverfahren

Changeurs de prises - Partie 1: Prescriptions de performances et méthodes d'essai

L'IEC 60214-1:2014 s'applique aux changeurs de prises en charge aussi bien de type à résistance qu'à bobine d'inductance, aux changeurs de prises non alimentés et à leurs mécanismes d'entraînement à moteur. Elle s'applique essentiellement aux changeurs de prises immergés dans de l'huile minérale isolante selon l'IEC 60296, mais elle peut également être utilisée pour des changeurs de prises à isolation gazeuse ou dans l'air, ou immergés dans d'autres liquides isolants, dans la mesure où les conditions sont applicables. Elle s'applique essentiellement aux changeurs de prises avec contacts d'arc, mais peut également être utilisée pour les changeurs de prises en charge sans arc (tels que les changeurs à coupure électronique), dans la mesure où les conditions sont applicables. La présente partie de l'IEC 60214 s'applique à tous les types de transformateurs pour applications de puissance et de distribution et également aux bobines d'inductance. Elle ne s'applique pas aux transformateurs et bobines d'inductance montés sur matériel roulant ferroviaire. Cette deuxième édition de l'IEC 60214-1 annule et remplace la première édition parue en 2003. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) intégration des exigences concernant les changeurs de prises en charge de type à vide, b) intégration des exigences concernant les changeurs de prises à isolation gazeuse, c) changements portant sur les essais de type afin de répondre aux conditions de service, d) référence à la nouvelle édition de l'IEC 60076-3:2013.

Odcepni preklopniki - 1. del: Tehnične zahteve in preskusne metode (IEC 60214-1:2014)

Standard EN IEC 60214-1 se uporablja za bremenske odcepne preklopnike v obliki uporov in reaktorjev, odcepne preklopnike brez visoke napetosti in njihove pogonske mehanizme. Večinoma se uporablja za odcepne preklopnike, potopljene v izolacijsko mineralno olje v skladu s standardom IEC 60296, vendar se lahko uporablja tudi za odcepne preklopnike z zračno ali plinsko izolacijo ali potopljene v druge izolacijske tekočine, če so pogoji primerni. Standard se večinoma uporablja za odcepne preklopnike z obločnimi kontakti, vendar se ga lahko uporabi tudi za bremenske odcepne preklopnike brez obločnih kontaktov (kot je elektronski preklop), če so pogoji primerni. Ta del standarda IEC 60214 se uporablja za močnostne in distribucijske transformatorje vseh vrst ter reaktorje, ne uporablja pa se za transformatorje in reaktorje, nameščene na železniških vozilih.

General Information

Status
Withdrawn
Publication Date
25-Sep-2014
Withdrawal Date
25-Jun-2017
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available - Publishing
Start Date
08-Aug-2014
Completion Date
08-Aug-2014

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SLOVENSKI STANDARD
SIST EN 60214-1:2014
01-oktober-2014
1DGRPHãþD
SIST EN 60214-1:2004
2GFHSQLSUHNORSQLNLGHO7HKQLþQH]DKWHYHLQSUHVNXVQHPHWRGH ,(&

Tap-changers - Part 1: Performance requirements and test methods
Stufenschalter -- Teil 1: Leistungsanforderungen und Prüfverfahren
Ta slovenski standard je istoveten z: EN 60214-1:2014
ICS:
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST EN 60214-1:2014 en

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

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SIST EN 60214-1:2014
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SIST EN 60214-1:2014
EUROPEAN STANDARD EN 60214-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2014
ICS 29.180 Supersedes EN 60214-1:2003
English Version
Tap-changers - Part 1: Performance requirements and test
methods
(IEC 60214-1:2014)

Changeurs de prises - Partie 1: Prescriptions de Stufenschalter - Teil 1: Leistungsanforderungen und

performances et méthodes d'essai Prüfverfahren
(CEI 60214-1:2014) (IEC 60214-1:2014)

This European Standard was approved by CENELEC on 2014-06-26. 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.
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 60214-1:2014 E
---------------------- Page: 3 ----------------------
SIST EN 60214-1:2014
EN 60214-1:2014 - 2 -
Foreword

The text of document 14/746/CDV, future edition 2 of IEC 60214-1, prepared by IEC/TC 14 "Power

transformers" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as

EN 60214-1:2014.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2015-03-26
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with (dow) 2017-06-26
the document have to be withdrawn
This document supersedes EN 60214-1:2003.

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 60214-1:2014 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 60076-1:2011 NOTE Harmonized in EN 60076-1:2011.
IEC 60076-11 NOTE Harmonized as EN 60076-11.
IEC 60376 NOTE Harmonized as EN 60376.
IEC 60599 NOTE Harmonized as EN 60599.
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SIST EN 60214-1:2014
- 3 - EN 60214-1:2014
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 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050 series International Electrotechnical Vocabulary - - series
Electrical and electronic measurements
and measuring
IEC 60060-1 - High-voltage test techniques -- Part 1: EN 60060-1 -
General definitions and test requirements
IEC 60076-3 2013 Power transformers -- Part 3: Insulation EN 60076-3 2013
levels, dielectric tests and external
clearances in air
IEC 60076-7 2005 Power transformers -- Part 7: Loading - -
guide for oil-immersed power transformers
IEC 60076-21 2011 - -
IEC 60137 2008 Insulated bushings for alternating voltages EN 60137 2008
above 1 000 V
IEC 60214-2 2004 Tap changers -- Part 2: Application guide - -
IEC 60270 - High-voltage test techniques - Partial EN 60270 -
discharge measurements
IEC 60296 - Fluids for electrotechnical applications - EN 60296 -
Unused mineral insulating oils for
transformers and switchgear
IEC 60529 - Degrees of protection provided by - -
enclosures (IP Code)
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SIST EN 60214-1:2014
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SIST EN 60214-1:2014
IEC 60214-1
Edition 2.0 2014-05
INTERNATIONAL
STANDARD
colour
inside
Tap-changers –
Part 1: Performance requirements and test methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
ICS 29.180 ISBN 978-2-8322-1621-7

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN 60214-1:2014
– 2 – IEC 60214-1:2014 © IEC:2014
CONTENTS

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

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 Service conditions ......................................................................................................... 15

4.1 Temperature of tap-changer environment .............................................................. 15

4.2 Temperature of motor-drive mechanism environment ............................................ 16

4.3 Overload conditions .............................................................................................. 16

5 Requirements for on-load tap-changers ......................................................................... 16

5.1 General requirements ........................................................................................... 16

5.1.1 Rating ............................................................................................................ 16

5.1.2 Compartments for diverter and selector switches ........................................... 17

5.1.3 Liquid-level gauges and gas monitoring devices ............................................ 17

5.1.4 Safety requirements for protection against internal failure.............................. 17

5.1.5 Limiting devices for the protection against transient overvoltages .................. 18

5.1.6 Change-over selector recovery voltages ........................................................ 18

5.1.7 Leakage inductance in coarse fine regulation arrangements .......................... 18

5.2 Type tests ............................................................................................................. 18

5.2.1 General ......................................................................................................... 18

5.2.2 Temperature rise of contacts ......................................................................... 19

5.2.3 Switching tests .............................................................................................. 20

5.2.4 Short-circuit current test ................................................................................ 25

5.2.5 Transition impedance test .............................................................................. 26

5.2.6 Mechanical tests ............................................................................................ 27

5.2.7 Tightness test ................................................................................................ 29

5.2.8 Dielectric tests ............................................................................................... 30

5.2.9 Type-test certificate ....................................................................................... 35

5.3 Routine tests ........................................................................................................ 35

5.3.1 General ......................................................................................................... 35

5.3.2 Mechanical test ............................................................................................. 35

5.3.3 Sequence test ............................................................................................... 35

5.3.4 Auxiliary circuits insulation test ...................................................................... 35

5.3.5 Pressure and vacuum tests ............................................................................ 35

6 Requirements for motor-drive mechanisms for on-load tap-changers ............................. 35

6.1 General requirements ........................................................................................... 35

6.1.1 Compliance of component parts ..................................................................... 35

6.1.2 Permissible variation of auxiliary supply ........................................................ 36

6.1.3 Step-by-step control ...................................................................................... 36

6.1.4 Tap position indicator .................................................................................... 36

6.1.5 Tap-change in progress indication ................................................................. 36

6.1.6 Limiting devices ............................................................................................. 36

6.1.7 Parallel control devices .................................................................................. 36

6.1.8 Direction of rotation protection ....................................................................... 36

6.1.9 Overcurrent blocking device .......................................................................... 36

6.1.10 Restarting device ........................................................................................... 37

6.1.11 Operation counter .......................................................................................... 37

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IEC 60214-1:2014 © IEC:2014 – 3 –

6.1.12 Manual operation of the motor-drive mechanism ............................................ 37

6.1.13 Motor-drive cubicle ........................................................................................ 37

6.1.14 Protective device against running-through ..................................................... 37

6.1.15 Protection against access to hazardous parts ................................................ 37

6.2 Type tests ............................................................................................................. 37

6.2.1 Mechanical load test ...................................................................................... 37

6.2.2 Overrun test .................................................................................................. 38

6.2.3 Degree of protection of motor-drive cubicle.................................................... 38

6.3 Routine tests ........................................................................................................ 38

6.3.1 Mechanical tests ............................................................................................ 38

6.3.2 Auxiliary circuits insulation test ...................................................................... 38

7 Requirements for de-energized tap-changers ................................................................ 38

7.1 General requirements ........................................................................................... 38

7.1.1 Rated characteristics ..................................................................................... 38

7.1.2 Types ............................................................................................................ 39

7.1.3 Handles and drives ........................................................................................ 39

7.1.4 Glands ........................................................................................................... 39

7.1.5 Interlocks ....................................................................................................... 39

7.1.6 Mechanical end stops .................................................................................... 39

7.2 Type tests ............................................................................................................. 40

7.2.1 General ......................................................................................................... 40

7.2.2 Temperature rise of contacts ......................................................................... 40

7.2.3 Short-circuit current test ................................................................................ 41

7.2.4 Mechanical tests ............................................................................................ 41

7.2.5 Dielectric tests ............................................................................................... 42

7.2.6 Type test certificate ....................................................................................... 47

7.3 Routine tests ........................................................................................................ 47

7.3.1 Mechanical tests ............................................................................................ 47

7.3.2 Pressure and vacuum tests ............................................................................ 47

8 Requirements for motor-drive mechanisms for de-energized tap-changers .................... 47

8.1 General requirements ........................................................................................... 47

8.1.1 General ......................................................................................................... 47

8.1.2 Compliance of component parts ..................................................................... 47

8.1.3 Permissible variation of auxiliary supply ........................................................ 47

8.1.4 Tap position indicator .................................................................................... 47

8.1.5 Limiting devices ............................................................................................. 48

8.1.6 Operation counter .......................................................................................... 48

8.1.7 Manual operation of the motor-drive mechanism ............................................ 48

8.1.8 Motor-drive cubicle ........................................................................................ 48

8.1.9 Protection against access to hazardous parts ................................................ 48

8.2 Type tests ............................................................................................................. 48

8.2.1 Mechanical load test ...................................................................................... 48

8.2.2 Overrun test .................................................................................................. 49

8.2.3 Degree of protection of motor-drive cubicle.................................................... 49

8.3 Routine tests ........................................................................................................ 49

8.3.1 Mechanical tests ............................................................................................ 49

8.3.2 Auxiliary circuits insulation test ...................................................................... 49

9 Nameplate ..................................................................................................................... 49

9.1 Tap-changers (on-load and de-energized) ............................................................. 49

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SIST EN 60214-1:2014
– 4 – IEC 60214-1:2014 © IEC:2014

9.2 Motor-drive mechanisms ....................................................................................... 50

10 De-energized tap-changer warning label ........................................................................ 50

11 Manufacturers operating instructions ............................................................................. 51

Annex A (normative) Supplementary information on switching duty on main and

transition contacts relating to resistor type tap-changers ....................................................... 52

Annex B (normative) Supplementary information on switching duty relating to reactor

type tap-changers ................................................................................................................. 58

B.1 Additional test parameters .................................................................................... 58

B.1.1 Service duty test ............................................................................................ 58

B.1.2 Breaking capacity test ................................................................................... 58

B.2 Duty of switching contacts .................................................................................... 58

Annex C (normative) Method for determining the equivalent temperature of the

transition resistor using power pulse current ......................................................................... 69

Annex D (informative) Simulated a.c. circuits for service duty and breaking capacity

tests ..................................................................................................................................... 70

D.1 General ................................................................................................................. 70

D.2 Transformer method.............................................................................................. 70

D.3 Resistance method ............................................................................................... 71

Annex E (informative) Example of a synthetic test circuit for service duty test of

vacuum type tap-changers .................................................................................................... 73

E.1 Definitions with relevance to the synthetic test circuit ............................................ 73

E.1.1 Synthetic test circuit ...................................................................................... 73

E.1.2 Simulated a.c. test circuit............................................................................... 73

E.1.3 Pre-arc .......................................................................................................... 73

E.1.4 Making voltage .............................................................................................. 73

E.2 Example for the test setup of a synthetic test circuit .............................................. 73

E.3 Example for the breaking/making condition during a switching operation............... 74

Bibliography .......................................................................................................................... 76

Figure 1 – Short-circuit test current (r.m.s. value) as a multiple of the maximum rated

through-current (on-load tap-changer) .................................................................................. 25

Figure 2 – Time sequence for the application of test voltage (on-load tap-changer) ............... 34

Figure 3 – Short-circuit test current (r.m.s. value) as a multiple of the maximum rated

through-current (de-energized tap-changer) .......................................................................... 41

Figure 4 – Time sequence for the application of test voltage (de-energized tap-

changer) ............................................................................................................................... 46

Figure 5 – Warning label (example) ...................................................................................... 50

Figure A.1 – Examples of current and voltage vectors for resistor type tap-changers ............ 53

Figure B.1 – Operating sequence of reactor type tap-changers with selector switch .............. 59

Figure B.2 – Current and voltage vectors for reactor type tap-changers with selector

switch ................................................................................................................................... 60

Figure B.3 – Operating sequence of reactor type tap-changers with selector switch

and equalizer windings ......................................................................................................... 61

Figure B.4 – Current and voltage vectors for reactor type tap-changers with selector

switch and equalizer windings ............................................................................................... 62

Figure B.5 – Operating sequence of a reactor type tap-changer with diverter switch

and tap selector .................................................................................................................... 64

Figure B.6 – Current and voltage vectors for reactor type tap-changers with diverter

switch and tap selector ......................................................................................................... 65

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SIST EN 60214-1:2014
IEC 60214-1:2014 © IEC:2014 – 5 –
Figure B.7 – Operating sequence of a reactor type tap-changer with vacuum

interrupter and tap selector ................................................................................................... 67

Figure B.8 – Current and voltage vectors for reactor type tap-changers with vacuum

interrupter and tap selector ................................................................................................... 68

Figure D.1 – Simulated test circuit – Transformer method ..................................................... 70

Figure D.2 – Simulated test circuit – Resistance method ....................................................... 71

Figure E.1 – Synthetic test circuit for service duty test of vacuum type tap-changers ............ 73

Figure E.2 – Currents of the synthetic test circuit .................................................................. 74

Figure E.3 – Example of the synthetic test for a switching operation with equal voltages

for breaking and making duty ................................................................................................ 74

Table 1 – Temperature of tap-changer environment .............................................................. 16

Table 2 – Contact temperature-rise limits for on-load tap-changers ....................................... 19

Table 3 – Test voltage levels for on-load tap-changers ......................................................... 30

Table 4 – Contact temperature-rise limits for de-energized tap-changers .............................. 40

Table 5 – Test voltage levels for de-energized tap-changers ................................................. 43

Table A.1 – Duty of main and transition contacts for resistor type tap-changers (non-

vacuum type) ........................................................................................................................ 54

Table A.2 – Effect of load power-factor on circuit-breaking duty for resistor type tap-

changers (non-vacuum type) ................................................................................................. 55

Table A.3 – Duty of main and transition contacts for resistor type tap-changers

(vacuum type) (1 of 2) ........................................................................................................... 56

Table B.1 – Duty of switching contacts for reactor type tap-changers with selector

switch – Switching direction from P1 to P5 ............................................................................ 59

Table B.2 – Duty of switching contacts for reactor type tap-changers with selector

switch and equalizer windings – Switching direction from P1 to P5 ....................................... 61

Table B.3 – Duty of switching contacts for reactor type tap-changers with diverter

switch and tap selector – Switching direction from P1 to P7 .................................................. 63

Table B.4 – Duty of switching contacts for reactor type tap-changers with vacuum

interrupter and tap selector – Switching direction from P1 to P11 .......................................... 66

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SIST EN 60214-1:2014
– 6 – IEC 60214-1:2014 © IEC:2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TAP-CHANGERS –
Part 1: Performance requirements
and test methods
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

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