<p> (1)Δu=10.5-10=0.5(kv)<br> (2)设最大容量为s<br> 则P=COS<img src="http://que-oss.fenziquan.com/web/akimg/asource/2015052917534064313.jpg">S=0.95S,Q=Ssin<img src="http://que-oss.fenziquan.com/web/akimg/asource/2015052917534064313.jpg">=0.31(S)<br> (3)R=R<sub>0</sub>L=0.15×3=O.45(Ω)<br> X=X<sub>0</sub>L=0.34×3=1.02(Ω)<br> (4)∵ΔU=(PR+QX)/>0.5<br> ∴(0.95S×0.45+0.31S×1.02)/10>0.5<br> ∴S<6.72(MVA.<br> (5)校验载流量∵S=<img src="http://que-oss.fenziquan.com/web/akimg/asource/2015052917543196273.jpg">UIcos<img src="http://que-oss.fenziquan.com/web/akimg/asource/2015052917534064313.jpg"><br> ∴I=S/<img src="http://que-oss.fenziquan.com/web/akimg/asource/2015052917543196273.jpg">Ucos<img src="http://que-oss.fenziquan.com/web/akimg/asource/2015052917534064313.jpg">=6.729×(10<sup>3</sup>/<img src="http://que-oss.fenziquan.com/web/akimg/asource/2015052917543196273.jpg">)×10×0.95=408A.<br> LGJ240导线在40C室外温度时载流量为494>408,所以最大能送出6.72MVA。</p>