IEC 62271-106:2011

IEC 62271-106 ®
Edition 1.0 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 106: Alternating current contactors, contactor-based controllers and motor-
starters
Appareillage à haute tension –
Partie 106: Contacteurs, combinés de démarrage à contacteurs et démarreurs de
moteurs, pour courant alternatif

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IEC 62271-106 ®
Edition 1.0 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 106: Alternating current contactors, contactor-based controllers and motor-
starters
Appareillage à haute tension –
Partie 106: Contacteurs, combinés de démarrage à contacteurs et démarreurs de
moteurs, pour courant alternatif

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XC
ICS 29.130.10 ISBN 978-2-88912-637-8

– 2 – 62271-106  IEC:2011
CONTENTS
FOREWORD. 3
1  General . 5
2  Normal and special service conditions . 7
3  Terms and definitions . 7
4  Ratings . 19
5  Design and construction . 32
6  Type tests . 36
7  Routine tests . 57
8  Guide to the selection of contactors and motor-starters for service . 58
9  Information to be given with enquiries, tenders and orders . 62
10  Transport, storage, installation, operation and maintenance . 63
11  Safety . 63
12  Influence of the product on the environment . 63

Annex A (normative) Records and reports of type tests for making, breaking and
short-time current performance . 70
Annex B (normative) Tolerances . 73
Annex C (informative) List of symbols and abbreviations. 79
Bibliography . . 80

Figure 1 – Examples of speed/time curves . 64
Figure 2 – Test duties A and B – preferred earth point . 65
Figure 3 – Test duties A and B – alternative earth point . 65
Figure 4 – Test duty C – preferred earth point . 66
Figure 5 – Test duty C – alternative earth point . 66
Figure 6 – Representation by two parameters of a prospective TRV of a circuit . 67
Figure 7 – Representation of the specified TRV by a two-parameter reference line and
a delay line . 67
Figure 8 – Determination of power frequency recovery voltage . 68
Figure 9 – Characteristics for determining take-over current . 69

Table 1 – Ratings and characteristics . 20
Table 2 – Utilization categories . 26
Table 3 – Characteristics dependent on starter type . 31
Table 4 – Applicable type tests . 37
Table 5 – Intermittent duty operating cycles . 40
Table 6 – Verification of rated making and breaking capacities – Conditions for making
and breaking corresponding to the several utilization categories at rated voltage U . 44
r
Table 7 – Relationship between current broken I and OFF time . 47
c
Table 8 – Overload current withstand requirements . 48
Table 9 – Transient recovery voltage characteristics . 53
Table 10 – Verification of the number of on-load operating cycles – Conditions for
making and breaking corresponding to the several utilization categories . 55
Table B.1 – Tolerances on test quantities for type test . 73

62271-106  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 106: Alternating current contactors,
contactor-based controllers and motor-starters

FOREWORD
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International Standard IEC 62271-106 has been prepared by subcommittee 17A: High-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
This standard cancels and replaces the second edition of IEC 60470 published in 1999. It
constitutes a technical revision.
This edition includes the following significant technical changes with respect to
IEC 60470:1999:
• Scope and object: The voltage range covered by the standard was expanded from 12 kV
to 24 kV. Overload relay calibration and testing is not covered by this standard.
• 3 Terms and definitions: Added definitions for capacitor switching classes.
• 4.1 Rated voltage: Added 15, 17,5 and 24 kV as standard voltage values.
• 4.109.2 Starting duty of reduced-voltage starters: Added ratings for autotransformer and
reactor starters (was in the testing section).
...