电缆电流

船用电力电缆载流量的选择

Selectionofcurrentratingsofshipboardpowercable导体最高额定工作温度：90℃

Maximumratedconductoroperatingtemperatureof90℃单芯

标称截面Nominalcrosssectionalareaofconductor

连续允许工作电流Continuousoperation

0.5h

mm20.50.7511.52.610162535507095120

A101316234051527296127157196242293339

A11141724425677103137171216273340400

1hA11141724425576102135167209259316369

40%A12161728506566941281752182763484298

A8.51114202634446182108133167206249288

环境空气温度：45℃Ambientairtemp.:45℃三芯和四芯Three&Fourcores

周期负荷工作电流Cyclicload

短时工作允许电流operation

0.5h

A7911162128365067110137169205237

A7812172331405778107136175232299358

1hA7812172230387296122155194246292

40%A811152229395172981321207257314365

Singlecore短时工作允许电流operation

周期负荷工作电流

二芯Twocores

短时工作允许电流Shortperiodoperation

0.5hA912152128374863127162210276351420

1hA912152128376588117145185235291344

40%A10141827376186118159197249311378441

连续允许工作电流Continuousoperation

连续允许工作电流Continuousoperation

周期负荷工作电流

ShortperiodCyclicloadShortperiodCyclicload

附录EAnnexE

环境温度修正系数

Correctionfactorsfordifferentambientairtemperatures绝缘材料insulationmaterial交联聚乙烯XLPE

40℃

45℃

50℃

55℃

60℃

65℃

70℃

80℃

1.101.0510.940.880.820.740.670.580.47

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附录FAnnexF

多芯船用电力电缆载流量的选择

Selectionofcurrentcarryingcapacitiesof

multi-coresshipboardpowercables

对于四芯以上的电缆，其电缆载流量通过下式计算。

Forcableswithmorethanfourcorecables,thecurrentratingsarecaculatedbythefollowingformula.公式Formula:

I=

I1

3NI1=通过单芯电缆的电流CurrentforsinglecorecableN=线芯数Numberofcores导体最高额定工作温度：90℃

标称截面Nominalcrosssectionalareaofconductor

mm211.52.5

5芯5coresA91323

7芯

10芯

12芯

14芯

16芯

19芯

24芯

连续允许工作电流

Continuousoperation

环境空气温度：45℃Ambientairtemp.：45℃

27芯30芯33芯37芯37coresA5712

7cores10cores12cores14cores16cores19cores24cores27cores30cores33coresA81221

A71018

A71017

A71016

A6915

A6915

A6814

A5813

A5713

A5712

载流量的修正系数

多于1根载流导体时的修正系数载流芯数

1567810121619

修正系数

10.580.530.520.500.460.440.400.37

多于1根电缆时的修正系数接触敷设电缆数

23456710

修正系数单芯0.910.830.74

多芯0.880.840.820.800.790.780.770.760.75

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