With drawing magnetizing current from mains, induction generator supplies load current to mains by leading power factor, hence power factor is very important to have the supplied current at rated system voltage, could be obtained accurately by drawing circle diagram as motor from OC SC results as motor, then making it to full circle ⭕️ for generator, and could find the maximum allowed current at different power factor …..
maximum current is different in lagging or leading load as is different when we want protect our induction generator with two side fed we have to protect in worst situation as lead load and level of sea - temperature - humidity - level of voltage saturation curve rate - internal impedance - and ... is determine and calculate it in maximum current ratio.
in at all best way for calculate maximum current calculate with quantity load connect to generator (ohmic - passive load (lead or lag) ) is determine maximum ratio load .