<p style="text-align:justify"><span style="font-size:14px">If polarity of CT or PT is wrongly connected, the operative direction reverses, i.e., towards the bus (rather than away from the bus as it should be). In this case, rather than physically correcting the polarity at CT/PT terminals, soft polarity changing facility is offered by the numerical relay (which is very convenient and less time consuming).</span></p>