NAGA Posted July 19, 2007 Report Share Posted July 19, 2007 Hi, Transfomer data sheet shows the %Z for a 15/20 MVA transfomer is 8% on ONAN base. Please clarify whether the %Z will vary when the transfomer is operated on ONAF rating (20MVA). Link to comment Share on other sites More sharing options...
marke Posted July 19, 2007 Report Share Posted July 19, 2007 Hello Naga The transformer impedance, in ohms, will not change, but as the rating of the transformer will increase when it is forced cooled, the impedance in % will change. Best regards, Mark Empson | administratorSkype Contact = markempson | phone +64 274 363 067LMPForum | Power Factor | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | Pressure Transducers | Smart Relay | GSM Control | Mark Empson Website | AuCom | Soft Starters Link to comment Share on other sites More sharing options...
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