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中電投集團(tuán)使用高壓電力電纜,其具有聚氯乙烯護(hù)套的電纜,安裝時(shí)的環(huán)境溫度不宜低于0℃,敷設(shè)的溫度更不能低于-5℃,在低于0℃下敷設(shè)應(yīng)對(duì)電纜進(jìn)行預(yù)加熱性能方面還是相當(dāng)?shù)耐怀龅摹?/span>