Copperclad
Member
- Location
- Merritt Island, FL USA
Hi all,
I have a machine from Canada that will require 575volt 3 phase power. It is rated at 160kw @575volt. This machine does have some motors involved, but the load is mostly resistive (heat strips). The power we have available is 460 volt 3 phase.
My question is how would I size the "boost" transformer and also the feeders, and OCP? Iam being told by the engineer on the project that simple ohms law solves all.
460/160,000=348 amps /1.732= 200.1 amps X 1.25%=251 amps.
That just does not seem right to me. Since the load is mostly resistive would you not recalculate the kw at 460volt for tranformer sizing and wire size/OCP on the primary side ?
Thanks for any help you may offer.
I have a machine from Canada that will require 575volt 3 phase power. It is rated at 160kw @575volt. This machine does have some motors involved, but the load is mostly resistive (heat strips). The power we have available is 460 volt 3 phase.
My question is how would I size the "boost" transformer and also the feeders, and OCP? Iam being told by the engineer on the project that simple ohms law solves all.
460/160,000=348 amps /1.732= 200.1 amps X 1.25%=251 amps.
That just does not seem right to me. Since the load is mostly resistive would you not recalculate the kw at 460volt for tranformer sizing and wire size/OCP on the primary side ?
Thanks for any help you may offer.