[RE-wrenches] feed-in imbalance

[Marco Mangelsdorf]

Now that SMA has come up with their new 8, 9 and 10 kW transformerless line
of single-phase 120/208V inverters, it brings up the question once again
about how practical and wise it is to have one or two of these inverters
feed into a three-phase service.  That is, is such an unbalanced feed much,
if any, of a big deal?

 

I spoke to my consulting E.E. about this and he said that the large majority
of utility-provided transformers are so large these days that an unbalanced
feed of, say, a 10 kW inverter that only has output power through L1 and L2
should not present a problem.

 

Any other thoughts out there on this matter?

 

Thanks,

marco 

 

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