BS 4999-147:1988
Current
The latest, up-to-date edition.
General requirements for rotating electrical machines Specification for dimensions of brushes and brush-holders for electrical machinery
Hardcopy , PDF
English
31-03-1988
Important note : All end users must be registered with an Account prior to user licenses being assigned.
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.
| 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 |
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.
| Standards | Relationship |
| IEC 60136:1986 | Identical |
| 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 |
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