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樓主  發(fā)表于: 2010-07-19 10:52
一直覺(jué)得這個(gè)問(wèn)題很模糊，
我是根據額定電流選型的比如額定電流為7.5a，
那么繼電器的選型  【最小值<7.5<最大值】

請大家談?wù)劥蠹业臉藴?div class="6yberce" id="alert_tpc" style="color:gray;margin-top:30px">[ 此帖被niyouyijian在2010-07-22 12:44重新編輯 ]
fanzeyang
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1樓  發(fā)表于: 2010-07-21 08:52
回6樓
熱繼電器接在三角形內，流過(guò)的電流為線(xiàn)電流，為相電流的1√3倍，即0.58倍

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