Cables :
  Polyvinyl chloride insulated power cable


The polyvinyl chloride insulated power cable is used in fixing lay-up transmission and distribution electric lines of 50HzA A.C rated voltage 6Kv and below.

Standard of product

The products carry out china standard of GB/T12706 (equivalent to IEC 60505). The company can manufacture the products that based on British standard (BS), German standard (DIN) and otherwise.

Application properties

  • Longterm permissible working temperature of cable conductive core is not more than 70
  • During short circuit (maximum permanent time is not more than 5 seconds), Temperature of cable conductor is not more than 165
  • The difference level of lay-up cable is not restricted. When laying the cable, ambient temperature of laying is not less than 0
  • They have a good chemical stability, acid resistance, alkali resistance, salt resistance, oil resistance, solvent resistance and flame resistance properties.
  • Light weight, good bending properties and easy to install and maintenance.

Classification of cables

  • The rated voltage are principally divided into two grades. 0.6/1kv and 3.6/6kv
  • Cable conductors are copper core and aluminum core
  • Numbers of cable cores are 1 core, 2 cores, 3 cores and 4 cores (include equal cross section of 4 cores and having one neutral core of cross-section, so called), 5 cores (include equal cross section of 5 cores and having two three-and-a half core neutral cores of cross-sections, so called three-and-half core).
  • Cable sheaths are polyethylene and polyvinyl chloride.

Technical requirements

  • Cable type and name
Type Name
VV VLV Copper (aluminum) core, polyvinyl chloride insulated and sheated power cable
VY VLY Copper (aluminum) core, polyvinyl chloride insulated, polyethylene sheated power cable
VV22VLV22 Copper (aluminum) core, polyvinyl chloride insulated, steel tape armoring polyvinyl chloride sheathed power cable
VV23VLV23 Copper (aluminum) core, polyvinyl chloride insulated, steel tape armoring polyethylene sheathed power cable
VV32VLV32 Copper (aluminum) core, polyvinyl chloride insulated, steel tape armoring polyethylene sheathed power cable
VV33VLV33 Copper (aluminum) core, polyvinyl chloride insulated, fine steel wire armoring polyethylene chloride sheathed power cable
VV33VLV33 Copper (aluminum) core, polyvinyl chloride insulated, fine steel armoring polyethylene sheathed power cable
VV42VLV42 Copper (aluminum) core, polyvinyl chloride insulated, thick steel wire armoring polyvinyl chloride sheathed power cable
VV43VLV43 Copper (aluminum) core, polyvinyl chloride insulated, thick steel armoring polyethylene sheathed power cable
  • Nominal cross-section of conductive core
    Master cores 1 1.5 2.5.4 6 10 25 35 50 70 95 120 150 185 240 300
    3+1 Neutral cores 1.5 2.5 4 6 10 16 25 35 50 70 95 120 150
    3+2 Neutral cores 1.5 2.5 4 6 10 16 25 35 50 70 95 120 150
  • Nominal thickness of insulation

KV

1 1.5 2.5 4 6 10 16 25 35 50
0.6/1 0.8 0.8 0.8 1 1 1 1 1.2 1.2 1.4
3.6/6 3.4 3.4 3.4 3.4 3.4

KV

70 95 120 150 185 240 300 400 500 630
0.6/1 1.4 1.6 1.6 1.8 2.0 2.2 2.4 2.6 2.8 12.84
3.6/6 3.4 3.4 3.4 3.4 3.4

KV

800 1000
0.6/1 2.8 3.0
3.6/6 3.4 3.4
  • D.C resistance of conductions
Nominal corss section
()
20 D.C resistance is not More than / Nominal cross section
()
20 D.C resistance is not More than / Nominal cross section
()
20 D.C resistance is not More than /
Copper core Aluminum core Copper core Aluminum core Copper core Aluminum core
1.5 12.1 18.1 35 0.524 0.868 240 0.0754 0.125
2.5 7.41 12.1 50 0.387 0.641 300 0.0601 0.100
4 4.61 7.41 70 0.268 0.443 400 0.0470 0.0778
6 3.08 4.61 95 0.193 0.320 500 0.0366 0.0605
10 1.83 3.08 120 0.153 0.253 630 0.0283 0.0469
16 1.15 1.91 150 0.124 0.206 800 0.0221 0.069
25 0.725 1.20 185 0.0991 0.164 1000 0.0176 0.0291
  • Insulation resistance
    A. Volume resistance /  0.6/1kv   3.6/6kV
      20 minimum 36.7 367
      70 minimum 0.037  0.37
    B. Insulation resistance constant M.
      20 minimum 36.7 367
      70 minimum 0.037  0.37
U0/U(kv) Us(kv) T(min)
0.6/1 3.5 5
3.6/6 11 5

    

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