Type

Description

Main application

VV

VLV

PVC insulation PVC sheath power cable

For laying in door, inducts and kin tunnels, but unable to bear pulling force and pressure.

VV22

VLV22

PVC insulated steel tape armored PVC sheathed power cable

For laying in doors, in tunnels and direct in ground, able to bear pulling force and pressure.

VV32

VLV32

PVC insulated fine steel wire armored PVC sheathed power cable

For laying down wells and under water, able to bear certain axis pulling force.

VV42

VLV42

PVC insulated steel wire armored PVC sheathed power cable

For laying down wells and under water, able to bear certain pulling force.

ZR-VV

ZR-VLV

PVC insulated PVC sheathed flame retardant power cable

For laying in door, inducts and in tunnels, but unable to bear pulling force and pressure.

ZR-VV22

ZR-VLV22

PVC insulated steel tape armored PVC sheathed flame retardant power cable

For laying in doors, in tunnels and directing ground, able to bear pulling force and pressure.

ZR-VV32

ZR-VLV32

PVC insulated fine steel wire armored PVC sheathed flame retardant power cable

For laying in doors, in wells, under water, able to bear certain pulling force.

ZR-VV42

ZR-VLV42

PVC insulated steel wire armored PVC sheathed flame retardant power cable

For laying down wells and under water, able to bear certain axis pulling force.

Core No

1

2

3

3+1

4

3+2

4+1

5

Area

4~500

2.5~500

2.5~300

4~300

2.5~300

2.5~300

4~300

2.5~95

No

Test item

Property

1

Construction

Listed to the tables

2

Conductor resistance

Listed to the tables

3

Voltage test

A.C 3.5kV 5min

No breaken

4

Mechanical properties before aging

Tensile strength

Insulation

Min.12.5N/mm²

Sheath

Min.12.5N/mm²

Elongation at break

Insulation

Min.150%

Sheath

Min.150%

Mechanical properties after aging

Tensile strength

Insulation

100°C±2°C 7days

Min.±12.5N/mm²

Sheath

100°C±2°C 7days

Min.±12.5N/mm²

Varying valve of tensile strength

Insulation

100°C±2°C 7days

Min.±25%

Sheath

100°C±2°C 7days

Min.±25%

Elongation at break

Insulation

100°C±2°C 7days

Min.±150%

Sheath

100°C±2°C 7days

Min.±150%

Varying valve of tensile strength

Insulation

100°C±2°C 7days

Min.±25%

Sheath

100°C±2°C 7days

Min.±25%

5

Flame-retardant property

Comply with GB12666.5-90(CB) and IEC332-3(CB)

6

Constant of insulation resistivity

Min at 20°C

36.7

Ki MΩ.km

Min at 70°C

0.037

Nom.cross sec.area of conductor
(mm²)

Single quantity of Conductor

Insu.
thickness
(mm)

Steel tape thickness
(mm)

Outer sheath thickness
(mm)

Approx.
dia of cable
(mm)

Cable approx.
weight
(kg/km)

D.C.
resistance

Test voltage
(ac)

Cu

Al

20°CCu

20°CAl

Kv/5min

2×4

1

1.0

2×0.2

1.8

14.6

210

160

4.61

7.41

3.5

2×6

1

1.0

2×0.2

1.8

15.6

264

192

3.08

4.61

3.5

2×10

7

1.0

2×0.2

1.8

18.2

393

242

1.83

3.02

3.5

2×16

7

1.0

2×0.2

1.8

20.3

541

334

1.15

1.91

3.5

2×25

7

1.2

2×0.2

1.8

23.7

794

469

0.727

1.20

3.5

2×35

7

1.2

2×0.2

1.8

25.9

1037

585

0.524

0.868

3.5

2×50

19

1.4

2×0.2

1.8

22.6

1227

610

0.387

0.641

3.5

2×70

19

1.4

2×0.2

1.9

25.0

1650

747

0.268

0.443

3.5

2×95

19

1.6

2×0.5

2.1

30.2

2213

988

0.193

0.320

3.5

2×120

19

1.6

2×0.5

2.2

33.6

2733

1186

0.153

0.253

3.5

2×150

37

1.8

2×0.5

2.4

35.6

3396

1462

0.124

0.206

3.5

2×185

37

2.0

2×0.5

2.5

38.8

4112

1726

0.0991

0.164

3.5