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Focusing On The Research, Development, Production And Sales Of Wires And Cables.

Marine Cable

about marine cable
Marine cable--specialty cable
Marine cable is a cable product designed for ships and ocean engineering, which is a special cable. Its product models are diverse, such as IEC60092-353, IEC60092-353, IEC60092-376. technical specifications, with high resistance to pressure, abrasion, corrosion and other characteristics. They are usually applied to power, lighting, communication and control systems in ships. In terms of usage scenarios, it can be widely used in all kinds of ships, such as cargo ships, passenger ships, fishing boats, etc.. Especially important is that it has excellent fireproof performance, which can effectively protect the safety of ships during navigation. These marine cables provide reliable support for the stable operation of ships. If you are looking for a marine cable supplier, Jiangnan Cable is your best choice as a top power cable/specialty cable manufacturer in China.
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Short circuit current ratings

1. The following short current ratings are for cables normally operating at a maximum

conductor temperature of 90℃

2. As a basis of the calculation,the theoretical temperature that arises in the conductor

during a short circuit is 250℃ in accordance with IEC60724.

3. EPR insulation are capable of withstanding of short term temperature up to 250℃

4. The short circuit current rating for copper conductors given in the table are values for 1

sec.and for other duration the current may be calculated by the following formular;

lt: Short circuit current fort second (A)

l1: Short circuit current for 1 second (A)

t: Short circuit duration(second )

5. The duration of short circuit based on these assumptions should be between 0.2 sec

and 5 sec

Conductor area

Short circuit current for 1sec

Conductor area

Short circuit current for 1sec

mm2

A

mm2

A

1.5
2.5
4
6
10
16
25
35
50

143
215
358
572
859
1431
2289
3577
5008
7154

70
95
120
150
185
240
300

10016
13593
17170
21463
26470
34340
42925

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Specializing In The Production, Sales And R&D Of Wires And Cables

Listed in Hong Kong in April 2012, Wuxi Jiangnan Cable Co., Ltd. is a National Key High and New Tech Enterprise specialized in production, sales and research on cables & wires. The company covers an area of more than 650,000 square meters with total assets of more than 8 billion Yuan. With more than 1,500 sets of domestic and foreign advanced production and testing equipment, we have passed many Management System Certifications. 

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Conductor resistance

Resistance communication formula

R=P*L/A

R: Resistance in ohm per phase

p: Specific resistance,Ω.mm²/m

A: Conductor area,mm²

L: Conductor length,m

Resistance as a Function of Temperature

R=RO[1+a(t-20)]

RO: Resistance at t=20℃

t: Conductor temperature,℃

α: 0.00393 for copper

Conductor D.C.Resistance of Tinned Annealed Stranded Copper at 20℃

Conductor area

Max.resistance at 20℃

Conguctor area

Max.resistance at 20℃

Class2

Class5

Class2

Class5

mm²

ohm/km

mm²

ohm/km

0.5

36.7

40.1

70

0.270

0.277

0.75

24.8

26.7

95

0.195

0.210

 

18.2

20.0

120

0.154

0.164

1.5

12.2

13.7

150

0.126

0.132

2.5

7.56

8.21

185

0.100

0.108

4

4.70

5.09

240

0.0762

0.0817

6

3.11

3.39

300

0.0607

0.0654

10

1.84

1.95

 

 

 

16

1.16

1.24

 

 

 

25

0.734

0.795

 

 

 

35

0.529

0.565

 

 

 

50

0.39

0.393

 

 

 

Current reting for continous service

Current ratings for EPR and XLPE insulated power cable

Current rating of EPR and XLPE insulated power cable in continuous service at maximum rated temperature of 90℃ in accordance with IEC 60092-352(2005)Annex B.4.with ambient temp.45℃

Conductor area

1core

2core

384c0f6

mm2

Amp

Amp

Amp

1

19

16

14

1.5

23

20

16

2.5

40

26

21

4

51

34

28

6

52

44

36

10

72

61

50

16

96

82

67

25

127

108

89

35

157

133

110

50

196

167

137

Conductor area

1core

2core

384c0f6

mm2

Amp

Amp

Amp

70

242

206

169

95

293

249

205

120

339

288

237

50

389

331

272

185

444

377

311

240

522

444

365

300

601

511

421

 

d.c.

a.c.

d.c.

a.c.

d.c.

a.c.

400

690

670

587

570

483

469

500

780

720

663

612

546

504

630

890

780

757

663

623

546

* The tabled current ratings must be adjusted for ambient air temperatures other than45℃ by multpying the rating factors in the following table

Ambient temp.℃

35

40

 45

50

55

60

65

70

75

80

Rating factors

1.10

1.05

1.00

0.94

0.88

0.82

0.74

0.67

0.58

0.47

For cabies with more than 4 cores,the current ratings are given by the following formular:

NO.

1.0mm²Amp

1.5mm²Amp

2.5mm²Amp

NO.

1.0mm²Amp

1.5mm²Amp

2.5mm²Amp

I1=Current rating for single cores

5

12

14

19

16

7

9

13

7

9

13

17

19

7

9

12

N=Number of cores

10

 

12

15

24

6

8

11

12

 

11

14

27

6

8

11

 

 

11

13

33

6

7

9

Installation Recommendation

1.  Minimum Bending Radius: The minimum recommended installation bending radinus shall be in accordance with IEC60092-352 as following:

Bending radii for cables rated up to 1.8/3kV

Cable construction

Overall dia.of cable(D)

Min.radius of bend

Insulation

Covering

Thermoplastic or thermosetting with cicular copper conductors

Unarmored or unbraided

≤25mm

4Da

>25mm

6D

Metal braid screened or armored

Any

6D

    Metal wire armored,metal tape armored or metal-shaped

Any

6D

Composite polyester/metal tape screened units or collective tape screen

Any

8D

Thermoplastic or thermosetting with shaped copper conductors

Any

Any

8D

Mineral

Hard metal sheathed

Any

6D

6D for defined circuit integrity

Bending radi for cables rated at 3.6/6 (7.2)kV and above

Cable Construction

Overall diameter of cable (D)

Min.radius of bend

Single-core Cable

Any

12D

Three-core Cable

Any

9D

2. Pulling tension

The cable puling tension during installation can be estimated through the following formula:

For armored cable

(P=50Nxtotal  criss  section  area  of  conductors)

For unarmored cable

(P=25N×total cross section area of conductors)

Additional  tension  will  be  supplied  form  the  braid  and  the  insulation  and  sheathing  material

Our Related Certifications 
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We are a National Key High and New Tech Enterprise specialized in production, sales and research on wires and cables.
Contact person: Wilco Zhong
Contact number: 86-13372003527
WhatsApp: 86-13372003527
Contact person: Kelly Lu
Contact number: 86-17368475715
WhatsApp: 86-17368475715
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