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3phase system, unbalance

3phase system, unbalance

3phase system, unbalance

(OP)
Dear Guru,
just need some help concerning unbalace load in 3 phase system.

Nomally, I saw only magtitude different between  3 phase but today after check at site on MCC.
I fould the angle diff between Phase A and B is 120 degree but the problem in between A and C is 127 degree why not 120 what is wrong in this system, pls advise.

Thanks
young eng.

RE: 3phase system, unbalance

Are you measuring voltage or current?

David Castor
www.cvoes.com

RE: 3phase system, unbalance

120 degrees between phases is nominal.  Many things can lead to off-nominal phase angle separation.  Some are not to worry about, others may be cause for concern.  Without more information it would be hard to tell what you have.

RE: 3phase system, unbalance

(OP)
Thanks for your answer.
I measuring current.

RE: 3phase system, unbalance

The current angles depends on the power factor of the loads.  

 

David Castor
www.cvoes.com

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