Generator voltage dipping at specific loads with observed increase in frequency
@jackcreasey Thanks. Your input on the current transformer was certainly insightful. The defect was identified to a winding in the compounding circuit of the alternator. One of the winding had an in-turn short and other was open circuited. This was due to degradation of the insulating material view condensation and overall compartment temperatures.
Post rewinding of the assembly, the problem has since been resolved and great lessons learnt.