Is that star load will make unbalance load, delta will not?

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Star loads can potentially be unbalanced, while Delta loads are generally associated with higher power applications and are typically more balanced. The distinction between Star and Delta configurations does not inherently determine load balance. Star loads are often single-phase and lower power, whereas Delta loads are usually three-phase and dedicated to specific applications. Ultimately, the balance of a load depends on the specific characteristics of the connected devices rather than the configuration alone.
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is that star load will make unbalanced , delta will not?

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I really do not know for sure what you are asking - Are you asking if Star Loads may be imbalanced but delta loads are not - or Delta by nature are always balanced?

The Star and Delta loads have nothing to do with being balanced.

Typically Star loads are single phase loads, and lower power. Delta loads, are usually dedicated to something specific (like three phase motors), and higher power.

But none of this is set in stone.
 

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