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Agricultural plastic insulated aluminum wire direct burial


 
1, model and name:
     NLYV - farm direct burial Polyethylene insulated aluminum, PVC sheathed cable.
     NLVV - Agricultural directly buried aluminum PVC insulated PVC sheath cable.
 
 
2, the implementation of standards: JB/T2171-1999
 
3, use:
     Applicable to rural areas for laying buried underground, to connect the exchange rated voltage 450/750V and below the fixed lines and electrical distribution equipment.
 
4, the main properties:
     Wires and long-term operating temperature does not exceed 70 ℃, the laying of the ambient temperature at the time of installation should not be less than 0 ℃, do not allow the bend radius of less than 8D, laying should be more than 0.8m depth or permafrost layer below.
 
5, direct burial wire structure and technical parameters in the following table:

 

Nominal cross section
(mm2)

Number / diameter
(mm2)

Diameter

Carrying capacity

Conductor resistance at 20 ℃ for not less than (Europe / km)

mm

A

4

1/2.25

6.0

77

7.39

6

1/2.76

6.4

97

4.91

10

7/1.35

8.2

130

3.08

16

7/1.70

9.2

170

1.91

25

7/2.14

10.8

220

1.20

35

7/2.52

12.2

265

0.868

50

19/1.78

13.5

320

0.641

70

19/2.14

15.0

295

0.443

95

19/2.52

16.9

475

0.320

120

37/2.02

18.5

545

0.253

150

37/2.25

20.7

610

0.206

185

37/2.52

22.8

695

0.164

240

37/2.85

25.6

810

0.100

300

61/2.50

28.2

910

 

400

61/2.88

32.3

1050

 

500

61/3.22

37.2

1190

 

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