I have a question about transforming 3-phase power.
I have a project where I need to convert 480/277Y power to
240V delta + 120V single phase, I need about 15kVA
I have read that it is not smart to use a y-y transformer, for reasons I cannot figure out. Also, when I search for 3-phase transformers, I find that it is not common to specify the primary coil as wye configured.
I am a complete noob to this, so here is my question:
Is there any problem with hooking up a delta-delta transformer to a 480Y source? Most delta-delta transformers are in fact open delta, meaning that there is really only two primary coils instead of 3. I do not need to keep the neutral, I may in fact want it isolated. Conceptually, I think this should be fine, but I may be missing something?
To get 120V from one of the 240V phases, is it best to just use another single phase transformer? Or should I try to center tap one of the secondary coils somehow?
I have a project where I need to convert 480/277Y power to
240V delta + 120V single phase, I need about 15kVA
I have read that it is not smart to use a y-y transformer, for reasons I cannot figure out. Also, when I search for 3-phase transformers, I find that it is not common to specify the primary coil as wye configured.
I am a complete noob to this, so here is my question:
Is there any problem with hooking up a delta-delta transformer to a 480Y source? Most delta-delta transformers are in fact open delta, meaning that there is really only two primary coils instead of 3. I do not need to keep the neutral, I may in fact want it isolated. Conceptually, I think this should be fine, but I may be missing something?
To get 120V from one of the 240V phases, is it best to just use another single phase transformer? Or should I try to center tap one of the secondary coils somehow?