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Commutator Conditions: Problems and Causes
The commutator should have a smooth film and consistent color. The film should be from light to dark brown. A streaky film is often a warning that the commutator might thread. If this is the case, fine copper dust will be found on the brushes and brush rigging. Bar marking, where some bars are lighter…
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Helwig Carbon’s Comprehensive Guide for Industrial and Railway Technology
The name “brushes” comes from bundles of tiny copper wires, which were used as elastic contacts at the starting period of the electrical engineering industry. The term “carbon brush” appeared with the change to materials made out of graphite and carbon. Carbon brushes have been developed for several decades: they are also indispensable hardware for…
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The Helwig Commutator Condition Guide
Helwig Carbon’s Commutator Condition Guide shows you how to avoid costly motor and generator repairs and unscheduled downtime by recognizing possible problems before they cause serious damage. Two major indicators of possible problems are: commutator irregularities and inconsistent film formation. To learn more, click on the link below. Commutator Condition Guide Brochure
