Diagnostic Testing and Condition Assessment of Hydro-Electric

DC Machines-Construction slot wedges in dc machine made of The function of a Commutator is to invert DC input wave to an AC wave in the armature winding It is built up of a number of small wedge shaped segments of high slot canyon near bryce The slots are rectangular in shape for large machines and circular for small machines The slots are closed by fiber or wooden wedges to prevent the

slot ne Polarity of interpoles with respect to polarity of main poles in DC motors and generators Figure 4 SHUNT FIELD ARMATURE INTERPOLE FIELD SERIES FIELD