Shahid Hafeez Posted March 10, 2008 Report Share Posted March 10, 2008 Hi everyone Any one can tell me,what is the physically concept of positive ,negative and zero sequence. I know these all are the componets of the unbalanced system but i want to know about the physically significance and concept. Regards, Shahid Hafeez Link to comment Share on other sites More sharing options...
marke Posted March 11, 2008 Report Share Posted March 11, 2008 Hello Shahid Hafeez My understanding is that a standard pure three phase supply is positive sequence. If you have an imbalance, that is indicative of negative sequence being added to your original positive sequence. It is easy to see if you consider the vectors of a forward rotating waveform and also a negative rotating waveform 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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