• There are no items in your cart

BS 4999-147:1988

Current
Current

The latest, up-to-date edition.

General requirements for rotating electrical machines Specification for dimensions of brushes and brush-holders for electrical machinery
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-31-1988

National foreword
Committees responsible
Section one - Principal dimensions and tolerances
1 Scope
2 Letter symbols for the principal dimensions of
     brushes for cylindrical commutators and slip rings
3 Standard dimensions
4 Marking
5 Limits and tolerances on principal dimensions t and
     a of the carbon brushes and brush-holders and on
     dimensions r of carbon brushes
6 Recommended combinations of the principal
     dimensions t, a and r
Section two - Complementary dimensions of brushes -
              Terminations of brushes
7 Complementary dimensions of brushes
7.1 Chamfers of brushes
7.2 Angles for contact and top bevels
7.3 Pressure area
7.4 Depth of insertion q of the flexible (shunt) in the
     brush
7.5 Safe length of a worn brush, dimension rm
8 Terminations of brushes
8.1 Terminal types, slots or holes and suitable screw
     sizes also the thickness of metal for spade, flag
     and double shoe terminals - Box or tubular
     terminals
8.2 Spade terminals
8.3 Flag terminals
8.4 Double shoe terminals
8.5 Box or tubular terminals
8.6 Length of flexibles (shunts)
8.7 Details of flexibles (shunts)
8.8 Current capacity and minimum thickness of terminals
Appendices
A Details of brush-holders
B IEC Technical Questionnaire for users of carbon
     brushes
C Test procedures for determining physical properties
     of carbon brushes for electrical machines
National Appendix
X Other IEC Publications applicable to brushes,
     brush-holders, commutators and slip-rings

Specifies the principal and complementary dimensions of brushes and brush-holders, limits and tolerances of principal dimensions and recommended combinations and preferred dimensions of brushes. Also current capacity, terminal types and sizes and details of brush-holders.

This standard applies to brushes and brush-holders for electrical machinery. For the present it applies only to brushes and brush-holders for cylindrical commutators and slip rings.

Committee
PEL/2
DevelopmentNote
Also numbered as IEC 60136. Supersedes BS 4362-A1(1968), BS 96(1954), 87/22615 DC & 94/215682 DC. (07/2005)
DocumentType
Standard
Pages
42
PublisherName
British Standards Institution
Status
Current
Supersedes

IEC 60773:1983 Test methods and apparatus for measurement of the operational characteristics of brushes
IEC 60356:1971 Dimensions for commutators and slip-rings
BS 3643-1:1981 ISO metric screw threads Principles and basic data
IEC TR 60638:1979 Criteria for assessing and coding of the commutation of rotating electrical machines for traction
IEC 60560:1977 Definitions and terminology of brush-holders for electrical machines
BS 4500-1:1969 ISO limits and fits General, tolerances and deviations
BS 1580-3:1965 Specification for Unified screw threads Diameters below ¼ in
IEC 60413:1972 Test procedures for determining physical properties of brush materials for electrical machines

View more information
US$277.90
Excluding Tax where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.