During operation of the transformer, regardless of quality, will have some losses, of which one is the lead loss, because when the transformer High Low leads through the current time, it will have resistive losses, but in fact lead loss should belong to the basic loss, but in the loss of the transformer is called additional loss.
 
        We lead a large current transformer, magnetic leakage must consider the degree of influence of the lead through the additional transformer losses. Which is given in the operating current transformer, magnetic leakage field leads with flux leakage field transformer windings exist together, but will also lead magnetic leakage field near the transformer windings in turn generate additional losses in the eddy current loss, it shape leads, mutual arrangement, and structure and so inextricably linked.
 
        According to Lleida electronic understood that in general purpose transformer Shenzhen, dry-type transformers, the lead relatively short lengths, and current leads is not much time, lead leakage flux in their structure and lead itself Additional eddy current loss, and therefore, such a situation is not a problem, so it can be negligible, but if the current is too large, the leads will adopt a more narrow aluminum row facing the wall transformer housing arrangement, this to do so, which is at the same distance condition than parallel to the wall of the housing arrangement, when the loss will be much smaller.