IEC 60276:2018

Carbon brushes, brush holders, commutators and slip-rings - Definitions and nomenclature

IEC 60276:2018 applies to carbon brushes for electrical machinery. This edition applies only to carbon brushes for commutators and slip-rings in rotating machines. Terms and definitions are relative to the brush construction (references 100’s to 500’s and parts of 900’s) and to the markings when operating on a rotating machine (references 600’s to 800’s).
This new edition includes the following significant technical changes with respect to the previous edition:
Some nomenclature has been deleted or added, whereas remaining definitions have been detailed and clarified, to reflect the technical evolution since 1987.
Additional definitions have been included to address the request for reviewing this standard, in particular nomenclature of commutator/slip-rings markings, brush markings and commutation sparks codes.

Balais de charbon, porte-balais, collecteurs et bagues – Définitions et nomenclature

L'IEC 60276:2018 s'applique aux balais de charbon pour machines électriques. Pour le moment, il n'est applicable qu'à des balais de charbon montés sur collecteurs et bagues dans les machines tournantes. Les termes et définitions se rapportent à la construction des balais (numéros de référence 100 et suivants à 500 et suivants et parties 900 et suivantes) ainsi qu'aux états de surface lorsqu'ils sont utilisés sur une machine tournante (numéros de référence 600 et suivants à 800 et suivants).
Cette nouvelle édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
Certaines nomenclatures ont été supprimées ou ajoutées, alors que les définitions restantes ont été détaillées et clarifiées, pour refléter l’évolution technique depuis 1987.
Des définitions supplémentaires ont été incluses pour répondre à la demande de révision de la présente norme, en particulier la nomenclature des états de surface des collecteurs/bagues, les états de surface des balais et les cotations des étincelles pour la commutation.

General Information

• Status: Published
• Publication Date: 07-May-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.160.01 - Rotating machinery in general
• Technical Committee: TC 2 - Rotating machinery
• Drafting Committee: MT 14 - TC 2/MT 14
• Current Stage: PPUB - Publication issued
• Start Date: 25-May-2018
• Completion Date: 08-May-2018

Standards Content (Sample)

IEC 60276 ®
Edition 2.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Carbon brushes, brush holders, commutators and slip-rings – Definitions and
nomenclature
Balais de charbon, porte-balais, collecteurs et bagues – Définitions et
nomenclature
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IEC 60276 ®
Edition 2.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Carbon brushes, brush holders, commutators and slip-rings – Definitions and

nomenclature
Balais de charbon, porte-balais, collecteurs et bagues – Définitions et

nomenclature
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.160.01 ISBN 978-2-8322-5680-0

– 2 – IEC 60276:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviated terms . 7
4.1 Symbols . 7
4.2 Subscripts . 7
5 Nomenclature . 7
5.1 Brushes . 7
5.1.1 101: Body / block . 7
5.1.2 102 to 104: Definitions of t, a and r . 7
5.1.3 105 to 112: Angles . 9
5.1.4 113 to 123: Edges and faces . 11
5.1.5 124 to 136: Brush top . 13
5.1.6 137 to 146: Monobloc, divided or double brushes . 15
5.1.7 147 to 153: Other configurations . 17
5.2 Tops (references No. 201 and following) . 19
5.3 Flexibles (shunts) and other electrical connections (references No. 301 and
following) . 20
5.4 Terminals (references No. 401 and following) . 21
5.5 Commutators and slip-ring (references No. 501 and following) . 22
5.5.1 501 to 512: Commutators. 22
5.5.2 513 to 514: Slip-rings. 24
5.5.3 515: Profile . 24
5.5.4 516: Flat contact . 25
5.6 Commutator and slip-rings markings (references No. 601 and following) . 25
5.7 Brush markings (references No. 701 and following) . 31
5.7.1 701 to 710: Sliding surface markings . 31
5.7.2 711 to 716: Edge/corner markings . 33
5.7.3 717 to 721: Side markings . 34
5.7.4 722 to 727: Connection markings . 36
5.8 Spark evaluation (references No. 801 and following) . 37
5.9 Miscellaneous (references No. 901 and following) . 38
Annex A (informative) Spark codes . 40
A.1 Criteria for assessment of sparking . 40
A.2 Complementary observations . 41
A.3 Relation between spark code and Westinghouse scale . 41

Figure 1 – Elements of the brush for definition of r dimension . 9

Table A.1 – Additional definitions of spark . 40
Table A.2 – Relationship between energy, colour, sound and spark code . 41
Table A.3 – Relationship between spark code and Westinghouse scale . 41

INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
CARBON BRUSHES, BRUSH HOLDERS, COMMUTATORS
AND SLIP-RINGS – DEFINITIONS AND NOMENCLATURE

FOREWORD
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