CB TRIPATHI Posted October 3, 2007 Report Share Posted October 3, 2007 we have one 55kw 3phase IM delta connected, which is run by DOL starter. Here are the mesured values rated KW -55KW, O/P KW -1775KW, LOADING% - 42.3, EFF% - 88.5 WE ARE PLANNING TO GO FOR DELTA/STAR STARTER. IS THERE WILL BE ANY ENERGY SAVING? DEFINETLY YES. BUT HOW IT IS CACLCULATED ? Link to comment Share on other sites More sharing options...
marke Posted October 3, 2007 Report Share Posted October 3, 2007 Hello CB TRIPATHI Welcome to the forum You will not save energy by replacing a DOL starter with a star delta starter. The start current in star will be less than the start current in delta, but the machine will take longer to start. The total energy consumed will be about the same provided that the motor can get to full speed in star. 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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