(2020•山东) 发电机的三相对称绕组作Y联结时，\( {u}_{U}=220\sqrt{2}\mathit{sin}(314t-\frac{\pi }{6})V\) "\( {u}_{UV}\)"为( )
A. \( {u}_{UV}=220\sqrt{2}\mathit{sin}314tV\)
B. \( {u}_{UV}=380\sqrt{2}\mathit{sin}314tV\) C. \( {u}_{UV}=220\sqrt{2}\mathit{sin}(314t+\frac{\pi }{3})V\) D. \( {u}_{UV}=380\sqrt{2}\mathit{sin}(314t+\frac{\pi }{3})V\)
