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發(fa)(fa)電(dian)(dian)機(ji)組(zu)的(de)使用(yong)(yong)壽(shou)命(ming)。 　　在(zai)選(xuan)擇(ze)柴油(you)(you)發(fa)(fa)電(dian)(dian)機(ji)出租(zu)時，可以事先(xian)測算(suan)(suan)好自己所(suo)(suo)需(xu)負(fu)荷的(de)大小(xiao)(xiao)(xiao)，然后(hou)根據負(fu)荷大小(xiao)(xiao)(xiao)來(lai)選(xuan)購發(fa)(fa)電(dian)(dian)機(ji)組(zu)。 　　1、首先(xian)發(fa)(fa)電(dian)(dian)機(ji)功(gong)(gong)(gong)率(lv)有KVA和(he)KW之(zhi)分(fen)。KVA是視在(zai)功(gong)(gong)(gong)率(lv)，KW是有效(xiao)功(gong)(gong)(gong)率(lv)，他們之(zhi)間(jian)(jian)的(de)關系是1KVA=0.8KW，進口機(ji)組(zu)一般(ban)用(yong)(yong)KVA表(biao)示(shi)功(gong)(gong)(gong)率(lv)單(dan)位，而國內用(yong)(yong)電(dian)(dian)設備(bei)一般(ban)都用(yong)(yong)KW表(biao)示(shi)，所(suo)(suo)以核算(suan)(suan)功(gong)(gong)(gong)率(lv)時應把KVA打8折(zhe)換算(suan)(suan)成KW。 　　2、其次功(gong)(gong)(gong)率(lv)還有長行（額定）功(gong)(gong)(gong)率(lv)和(he)后(hou)備(bei)功(gong)(gong)(gong)率(lv)之(zhi)分(fen)，長行功(gong)(gong)(gong)率(lv)為(wei)發(fa)(fa)電(dian)(dian)機(ji)可以連續(xu)12小(xiao)(xiao)(xiao)時運(yun)行的(de)功(gong)(gong)(gong)率(lv)，而柴油(you)(you)發(fa)(fa)電(dian)(dian)機(ji)出租(zu)備(bei)功(gong)(gong)(gong)率(lv)只能在(zai)12小(xiao)(xiao)(xiao)時連續(xu)運(yun)行中運(yun)行一小(xiao)(xiao)(xiao)時。 　　3、另(ling)外(wai)，確定柴油(you)(you)發(fa)(fa)電(dian)(dian)機(ji)出租(zu)的(de)功(gong)(gong)(gong)率(lv)并非(fei)把所(suo)(suo)有用(yong)(yong)電(dian)(dian)器(qi)功(gong)(gong)(gong)率(lv)簡單(dan)相加，還需(xu)要(yao)考慮用(yong)(yong)電(dian)(dian)器(qi)的(de)啟動方(fang)式。一般(ban)啟動方(fang)式分(fen)為(wei)直(zhi)接啟動和(he)降壓啟動或變頻啟動，前者啟動電(dian)(dian)流為(wei)工(gong)作電(dian)(dian)流6倍(bei)左(zuo)右，瞬(shun)間(jian)(jian)功(gong)(gong)(gong)率(lv)也會(hui)達到額定功(gong)(gong)(gong)率(lv)6倍(bei)；后(hou)者啟動電(dian)(dian)流為(wei)3倍(bei)左(zuo)右，瞬(shun)間(jian)(jian)功(gong)(gong)(gong)率(lv)也為(wei)額定功(gong)(gong)(gong)率(lv)3倍(bei)。因此，選(xuan)擇(ze)柴油(you)(you)發(fa)(fa)電(dian)(dian)機(ji)出租(zu)功(gong)(gong)(gong)率(lv)時，除了需(xu)要(yao)考慮所(suo)(suo)有用(yong)(yong)電(dian)(dian)器(qi)功(gong)(gong)(gong)