Spread Brushes It is a special type of brush the top of which are chamfered at a related angle towards the dividing line. Pressure to the brush is applied vide a top piece generally made of insulation material which has a cushioning effect.
Brush holders for DC moters
In principle commutator insulation should be recessed below the surface of the segments, unless hard carbon brushes are used. Segment edges should be bevelled to ensure on the one hand proper communication and on the other to avoid high brush wear or brush breakage.
LOW VOLTAGE RING CURRENT COLLECTOR DEVELOPED FROM U.S.S.R. ORIGIN FOR H.E.C. ELECTRICAL EXCAVATOR. CAPACITY 4.6 CU Metre having 10 Sliprings 500 V..D.C. OR 50HZ for a column of 85 mm. in diameter. Permissible Load for 8 Rings is 30A 100% D.F. Each. Permissible Load on remaining Two Ring Current Collector is 150A at 100% D.F. an 250A at 40% D.F. Carbon Brush Type.
