IEC 61869-3:2011

Instrument transformers - Part 3: Additional requirements for inductive voltage transformers

IEC 61869-3:2011 applies to new inductive voltage transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz. This standard replaces IEC 60044-2: Inductive Voltage Transformers.
This publication is to be read in conjunction with IEC 61869-1:2007.

Transformateurs de mesure - Partie 3: Exigences supplémentaires concernant les transformateurs inductifs de tension

La CEI 61869-3:2011 est applicable aux transformateurs inductifs de tension neufs destinés à être utilisés avec des appareils de mesure électriques et des dispositifs électriques de protection, de fréquence comprise entre 15 Hz et 100 Hz. La présente Norme remplace la CEI 60044-2 relatives aux transformateurs inductifs de tension.
Cette publication doit être lue conjointement avec la CEI 61869-1:2007.

General Information

• Status: Published
• Publication Date: 12-Jul-2011
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• Technical Committee: TC 38 - Instrument Transformers
• Drafting Committee: WG 33 - TC 38/WG 33
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jul-2011
• Completion Date: 13-Jul-2011

Relations

• Replaces: IEC 60044-2:1997 - Instrument transformers - Part 2: Inductive voltage transformers
• Effective Date: 05-Sep-2023
• Replaces: IEC 60044-2:1997/AMD2:2002 - Amendment 2 - Instrument transformers - Part 2: Inductive voltage transformers
• Effective Date: 05-Sep-2023
• Replaces: IEC 60044-2:1997/AMD1:2000 - Amendment 1 - Instrument transformers - Part 2: Inductive voltage transformers
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61869-3 ®
Edition 1.0 2011-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instrument transformers –
Part 3: Additional requirements for inductive voltage transformers

Transformateurs de mesure –
Partie 3: Exigences supplémentaires concernant les transformateurs inductifs
de tension
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IEC 61869-3 ®
Edition 1.0 2011-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Instrument transformers –
Part 3: Additional requirements for inductive voltage transformers

Transformateurs de mesure –
Partie 3: Exigences supplémentaires concernant les transformateurs inductifs
de tension
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 17.220.20 ISBN 978-2-88912-544-9

– 2 – 61869-3 © IEC:2011
CONTENTS
FOREWORD . 4
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
3.1 General definitions . 7
3.2 Definitions related to dielectric ratings . 8
3.4 Definitions related to accuracy . 9
3.5 Definitions related to other ratings . 9
3.7 Index of abbreviation . 9
5 Ratings . 9
5.3 Rated insulation levels . 10
5.5 Rated output . 10
5.5.301 Rated output values . 10
5.5.302 Rated thermal limiting output . 10
5.5.303 Rated output values for residual voltage windings . 10
5.5.304 Rated thermal limiting output for residual voltage windings . 10
5.6 Rated accuracy class . 11
5.6.301 Accuracy requirements for single-phase inductive measuring
voltage transformers . 11
5.6.302 Additional requirements for single-phase inductive protective
voltage transformers . 12
5.301 Standard values of rated voltages . 13
5.301.1 Rated primary voltages . 13
5.301.2 Rated secondary voltages . 13
5.301.3 Rated voltages for residual voltage windings . 13
5.302 Standard values of rated voltage factor . 14
6 Design and construction . 15
6.4 Requirements for temperature rise of parts and components . 15
6.4.1 General . 15
6.13 Markings . 15
6.13.301 Terminal markings . 15
6.13.302 Rating plate markings . 19
6.301 Short-circuit withstand capability . 20
7 Tests . 20
7.1 General . 20
7.1.2 List of tests . 20
7.2 Type tests . 21
7.2.2 Temperature-rise test . 21
7.2.3 Impulse voltage withstand test on primary terminals . 22
7.2.5 Electromagnetic Compatibility (EMC) tests . 23
7.2.6 Test for accuracy . 23
7.2.301 Short-circuit withstand capability test . 23
7.3 Routine tests . 24
7.3.1 Power-frequency voltage withstand tests on primary terminals . 24
7.3.2 Partial discharge measurements . 27
7.3.5 Test for accuracy . 27

61869-3 © IEC:2011 – 3 –
7.4 Special tests . 27
7.4.3 Measurement of capacitance and dielectric dissipation factor . 27
7.4.6 Internal arc fault test . 28

Figure 301 – Single-phase transformer with fully insulated terminals and a single
secondary . 16
Figure 302 – Single-phase transformer with a neutral primary terminal with reduced
insulation and a single secondary . 16
Figure 303 – Three-phase assembly with a single secondary . 16
Figure 304 – Single-phase transformer with two secondaries . 17
Figure 305 – Three-phase assembly with two secondaries . 17
Figure 306 – Single-phase transformer with one multi-tap secondary . 17
Figure 307 – Three-phase assembly with one multi-tap secondary . 17
Figure 308 – Single-phase transformer with two multi-tap secondaries . 18
Figure 309 – Single-phase transformer with one residual voltage winding . 18
Figure 310 – Three-phase transformer with one residual voltage winding. 18
Figure 311 – Example of a typical rating plate . 20
Figure 312 – Example of a rating plate with typical data . 20
Figure 313 – Common mode (separate source) test voltage application . 26
Figure 314 – Differential mode (induced) test voltage application – Primary excitation . 26
Figure 315 – Differential mode (induced) test voltage application – Secondary
excitation . 27

Table 301 – Limits of voltage error and phase displacement for measuring voltage
transformers . 11
Table 302 – Limits of voltage error and phase displacement for protective voltage
transformers . 12
Table 303 – Rated voltages for secondary windings intended to produce a residual
voltage . 14
Table 10 – List of tests . 21
Table 305 – Burden ranges for accuracy tests . 23

– 4 – 61869-3 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSTRUMENT TRANSFORMERS –
Part 3: Additional requirements for inductive voltage transformers

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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