CI V2 Vol3 #80

[EEpowerOK]

A delta Wye transformer is rated for: 34.5 KV/480 V, 125 Amp primary (high side) line current.

This problem used 1.73 * I(line) * V(line) for the power calculation.

What made this a 3 phase system in the description above?

 

[iahim]

A delta Wye transformer is rated for: 34.5 KV/480 V, 125 Amp primary (high side) line current.

You don't have delta/wye in single phase.

 

[EEpowerOK]

Hmm, the description could be a single phase line from a 3 phase system.

It did not say the system was balanced or unbalanced system which would tell me 3 phase.

 

[knight1fox3]

It's inherent when you see delta/wye in the specifications and safe to assume that is 3-phase. Don't read into it too much. If what you said above was true, it would be stated that way then.

 

[EEpowerOK]

Thanks iahim and knight1fox3 for your help.

Thats me, reading in more than what is needed. Thats part of why I'm taking this for the 2nd time.