NEMA - National Electrical Manufacturers Association
Scope
These standards record definitions@ dimensions and tolerances@ test procedures for physical properties@ and test procedures for shunt connections for brushes used in the electrical manufacturing industry. Included are carbon@ carbon-graphite@ graphite@ electrographite@ metal-graphite@ metal-impregnated@ and resin-bonded brushes. IEC definitions@ terms@ symbols@ and SI units are given in square brackets ( ).