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adhyartha
Associate

Join Date: Nov 2007
Location: Indonesia
Posts: 29

Y Generator with Y and D Transformer

02/11/2009 8:57 PM

Dear Experts,

What should be considered when we have a Y generator at the upstream and some transformers with Y and D primary, connected to the bus from the upstream?

Thank you

Regards,

Adhyartha

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rudy.leurs
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Belgium - Member - New Member

Join Date: May 2007
Location: Flanders (Belgium)
Posts: 343
Good Answers: 21
#1

Re: Y Generator with Y and D Transformer

02/13/2009 6:51 AM

What are you trying to do? Speading the current/load over time ? Star and delta have a phase shift from 30 degrees ?
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adhyartha
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Join Date: Nov 2007
Location: Indonesia
Posts: 29
#2
In reply to #1

Re: Y Generator with Y and D Transformer

02/15/2009 3:41 AM

Nope. I'm just trying to understand the philosphy of the designer. Because there were 3 units of Yyo transformers and 3 units of Dy5 transformers connected to the main busbar, while they're all catering the same type of loads, a 3 phase induction motor with Star-Delta.

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