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MIT 6.002 Circuits and Electronics, Spring 2007 14 Online
OpenStudy (anonymous):

what the effect of harmonics in the power systems such as transformer magnetizing current , direct current power supplies and nonlinear loads with drawing ?

OpenStudy (sidsiddhartha):

well harmonics like triplen(3rd,9th..)harmonics cause considerable amount of constraint in grids and they causes circulating current flow which can damage a system because of non uniform emf distribution and in various distribution sites delta connected transformers are used to trap them

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