電力電纜敷設條件Installation condition（南洋電纜）

電力電纜敷設條件Installation condition（南洋電纜）

注意：本文敷設條件及載流量修正系數(shù)使用于1（Um=1.2kV）~35kV(Um=40.5kV)電力電纜。The laying condition and ampacitycorrection factor is applicable for rated voltage 1kV（Um=1.2kV）to 35kV(Um=40.5kV)power cable.

(1)電纜敷設溫度應不低于0℃

Installation temperature is not lower than0 and

(2)電纜安裝時的最小允許彎曲半徑見下表。

Min bending radius allowed is as below.

( D-the diameter of cable )

電纜安裝時的最小彎曲半徑Minimum bending radius when cable installed

(3)空氣中電纜敷設在陰影處，環(huán)境溫度為40℃；土壤中電纜直埋深度為700mm,土壤熱阻系數(shù)為1.0k.m/w，環(huán)境溫度為25℃。

When cable being laid under shade in air, the ambienttemperature is 40℃; If cable is buried in soil depth of1000mm soil thermal resstivity is 1.2km/w, and the ambient temperature is 25℃.

（4）單芯電纜三根水平平行敷設及星形敷設時，中心間距均為一倍電纜外徑；多芯為單根敷設。

When three of single core cables laid in parallel andstar-laying, the center of the pitch are doubled of the cable diameter;multi-core cable is laid individually.

載流量修正系數(shù)Correctioncoefficient of rating current

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2018年6月30日