功(gong)(gong)(gong)率(lv)是(shi)(shi)單位(wei)時間(jian)內做功(gong)(gong)(gong)的(de)大小或能量轉換(huan)的(de)大小，視在功(gong)(gong)(gong)率(lv)是(shi)(shi)指發電機(ji)發出的(de)總功(gong)(gong)(gong)率(lv)，其中可以(yi)分為有功(gong)(gong)(gong)部(bu)分和無功(gong)(gong)(gong)部(bu)分。有功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)是(shi)(shi)保(bao)持用(yong)電設備正常(chang)運(yun)行(xing)所需的(de)電功(gong)(gong)(gong)率(lv)，也就是(shi)(shi)將電能轉換(huan)為其他形式(shi)能量(機(ji)械(xie)能、光能、熱能)的(de)電功(gong)(gong)(gong)率(lv)。

汽車(che)焊接(jie)車(che)間無功補償(chang)元器件的(de)補償(chang)標(biao)準是什么

同(tong)時每個單元(yuan)還裝有(you)過(guo)熱保護裝置(zhi)，當(dang)電(dian)容(rong)器(qi)溫升超過(guo)額定值時，能自動地將(jiang)電(dian)容(rong)器(qi)從線路(lu)中切(qie)除；此(ci)外(wai)每個單元(yuan)內均(jun)裝有(you)放電(dian)電(dian)阻，當(dang)電(dian)容(rong)器(qi)從電(dian)源斷(duan)開后，可在規定時間內，將(jiang)電(dian)容(rong)器(qi)的殘(can)壓降(jiang)到安全值以內。由于這種電(dian)容(rong)器(qi)有(you)比較多(duo)的功能，電(dian)容(rong)器(qi)箱內不需再增加(jia)元(yuan)件，簡化了(le)線路(lu)，提(ti)高了(le)可靠性。

對于這種(zhong)情(qing)況，雖然(ran)可供利用的(de)(de)負荷(he)電(dian)(dian)感(gan)較少，達不到使有功電(dian)(dian)流完全(quan)平衡(heng)(heng)(heng)(heng)的(de)(de)目(mu)的(de)(de)，但是(shi)仍然(ran)可以(yi)取(qu)得一定的(de)(de)調整不平衡(heng)(heng)(heng)(heng)效果。補償(chang)電(dian)(dian)容(rong)(rong)器的(de)(de)總容(rong)(rong)量恰好等(deng)于負荷(he)中的(de)(de)電(dian)(dian)感(gan)總容(rong)(rong)量，補償(chang)后三(san)相(xiang)的(de)(de)功率因數均(jun)等(deng)于1，三(san)相(xiang)的(de)(de)有功電(dian)(dian)流雖然(ran)沒有完全(quan)平衡(heng)(heng)(heng)(heng)，但不平衡(heng)(heng)(heng)(heng)程度大(da)大(da)減輕(qing)，零線電(dian)(dian)流明(ming)顯減小。