IEC 60076-6:2007

IEC 60076-6
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Power transformers –
Part 6: Reactors
Transformateurs de puissance –
Partie 6: Bobines d’inductance

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IEC 60076-6
Edition 1.0 2007-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Power transformers –
Part 6: Reactors
Transformateurs de puissance –
Partie 6: Bobines d’inductance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XF
CODE PRIX
ICS 29.180 ISBN 2-8318-9507-3
– 2 – 60076-6 © IEC:2007
CONTENTS
FOREWORD.9
INTRODUCTION.11

1 Scope.12
2 Normative references .12
3 Terms and definitions .13
3.1 Types of reactor .13
3.2 Other definitions.14
4 Symbols and abbreviations.17
5 Service conditions .18
5.1 General .18
5.2 Seismic conditions .18
6 Design, testing, tolerances and application.18
7 Shunt reactors.20
7.1 General .20
7.2 Design.20
7.3 Terms and definitions .20
7.4 Rating .21
7.4.1 Rated voltage .22
7.4.2 Maximum operating voltage .22
7.4.3 Rated power .22
7.4.4 Zero-sequence reactance of a three-phase star-connected reactor.22
7.4.5 Mutual reactance of a three-phase reactor.22
7.4.6 Inrush current level.22
7.4.7 Linearity of the shunt reactor .22
7.5 Temperature rise.22
7.6 Insulation level .23
7.7 Rating plates .23
7.8 Tests.23
7.8.1 General .23
7.8.2 Routine tests .23
7.8.3 Type tests .24
7.8.4 Special tests.24
7.8.5 Determination of reactance and linearity of reactance.24
7.8.6 Measurement of loss (routine test, special test) .25
7.8.7 Measurement of harmonics of the current (special test) .26
7.8.8 Measurement of zero-sequence reactance on three-phase reactors
(special test).27
7.8.9 Measurement of mutual reactance on three-phase reactors (special
test).27
7.8.10 Dielectric tests.27
7.8.11 Measurement of magnetic characteristic (special test) .30
7.8.12 Measurement of acoustic sound level (type test, special test).30
7.8.13 Measurement of vibration (type test).31
7.8.14 Temperature rise test (type test).32
7.9 Tolerances .33

60076-6 © IEC:2007 – 3 –
7.9.1 General .33
7.9.2 Tolerances on reactance at rated voltage and rated frequency .33
7.9.3 Tolerances on the linearity of reactance .33
7.9.4 Tolerance on loss .33
8 Current-limiting reactors and neutral-earthing reactors .33
8.1 General .33
8.2 Design.34
8.3 Terms and definitions .34
8.4 Rating .36
8.4.1 Rated continuous current.36
8.4.2 Rated thermal short-circuit current.37
8.4.3 Rated thermal short-circuit current duration .37
8.4.4 Rated mechanical short-circuit current.37
8.4.5 Rated short-time current.37
8.4.6 Rated short-time current duration or duty-cycle .37
8.4.7 Coupling factor .38
8.4.8 Rated short-circuit impedance .38
8.4.9 Rated short-time impedance .39
8.4.10 Rated continuous impedance.39
8.5 Ability to withstand rated thermal and rated mechanical short-circuit current .39
8.6 Temperature rise.39
8.6.1 Temperature rise at rated continuous current .39
8.6.2 Temperature due to rated thermal short-circuit current and rated
short-time current loading.40
8.7 Insulation level .40
8.7.1 General .40
8.8 Rating plates .40
8.9 Tests.41
8.9.1 General .41
8.9.2 Routine tests .41
8.9.3 Type tests .41
8.9.4 Special tests.42
8.9.5 Measurement of impedance at rated continuous current (routine test) .42
8.9.6 Measurement of impedance at rated short-time current (routine test).43
8.9.7 Measurement of loss (routine test, special test) .43
8.9.8 Separate source a.c. withstand voltage test (routine test, special
test).44
8.9.9 Winding overvoltage test for current-limiting reactors (routine test).44
8.9.10 Winding overvoltage test for neutral-earthing reactors (routine test) .45
8.9.11 Temperature rise test at rated continuous current (type test) .45
8.9.12 Lightning impulse test for current-limiting reactors (type test) .46
8.9.13 Short-circuit current test (special test) .
...