Three Core 12/20KV Medium Voltage Steel Tape Armoured Cable

The Three Core 6/10kV Medium Voltage Steel Tape Armoured Cable is designed for efficient and reliable power transmission at medium voltage levels up to 10kV. It consists of three insulated conductors, typically made of copper or aluminum, with XLPE insulation that ensures excellent dielectric properties, thermal stability, and resistance to environmental conditions. The conductors are protected by steel tape armoring, which provides mechanical strength and durability, suitable for underground, outdoor, or challenging installation environments. An outer sheath offers additional protection against moisture, chemicals, and physical damage. This type of cable is commonly used in industrial power distribution, infrastructure projects, and utility networks requiring robust and dependable medium voltage electrical transmission.

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Three Core 12/20KV Medium Voltage Steel Tape Armoured Cable

Three Core 12/20KV (Um=24KV) Armoured cable

  • Rated Voltage 12/20kV
  • Conductor Material Copper or Aluminum
  • Operating Temperature up to 90°C
  • Short Circuit Temperature 250°C
  • Bending Radius 15 x OD

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Three Core 12/20KV Medium Voltage Steel Tape Armoured Cable Application

XLPE(Cross linked polyethylene) insulated cable functions well for electricity transmission and distribution lines for its excellent electrical and physical properties, including the advantage of simplicity in construction, lightness in weight; convenience in application besides its excellent electrical, thermal, mechanical and anti-chemical corrosion properties.

GB/12706-2008, IEC60502,IEC 60228,IEC60332 BS 5467,BS 6622 , IS 1554 , IS 7098and ICEA S-66-524 etc.

CONSTRUCTION :
Three Core 12/20KV Medium Voltage Steel Tape Armoured Cable Construction

Three Core Medium Voltage Steel Tape Armoured Cable Construction

Three Core Medium Voltage Steel Tape Armoured Cable Construction

Conductor: Plain annealed stranded compacted circular copper or aluminium conductor to IEC60228 class 2

Conductor Screen: Extruded semi-conductive compound

Insulation: XLPE (cross-linked polyethylene) rated at 90°C

Insulation Screen: Extruded semi-conductive compound

Metallic Screen: copper tape or a concentric layer of copper wires

Color for core identification: Red, Yellow ,Blue tape shall be applied between insulation screen and metallic screen ( The above identifying can be changed as user requirement)

Assembly : Three screened cores are laid up together ,if necessary filled with non-hygroscopic material compatible with insulation and covered with a layer of PVC sheath

Inner Sheath: Extruded layer of PVC ST2 or PE , LSZH

Armour : Double of galvanized steel tape or galvanized steel wire for three core power cable , Double of aluminium tape or aluminium wire for single power cable ,

Outer Sheath: PVC type ST2 to IEC 60502 or PE ,LSZH

DIMENSIONAL DATA

Three Core 12/20KV Medium Voltage Steel tape Armoured Cable

 Specification Outer diameter Nominal thickness of insulation Steel tape

Layer×thickness

 Nominal sheath thickness  Approx. Outer diameter of cable Approx. Weight of cable Ampacity of cable
Air Soil
CU AL Cu Al Cu Al
mm2 mm mm mm mm mm kg/km kg/km A A A A
3×25 6.0 5.5 2×0.5 2.7 55.2 3758.8 3292.4 130 100 135 105
3×35 7.0 5.5 2×0.5 2.8 57.6 4260.7 3607.8 150 115 160 125
3×50 8.4 5.5 2×0.5 2.9 60.9 4972.7 4040.0 180 140 190 150
3×70 10.0 5.5 2×0.5 3.0 64.6 5808.5 4502.7 220 170 235 185
3×95 11.5 5.5 2×0.5 3.1 68.3 6903.7 5131.6 265 205 285 220
3×120 13.0 5.5 2×0.5 3.3 71.9 7913.3 5674.8 310 240 320 250
3×150 14.5 5.5 2×0.5 3.4 75.5 9095.3 6297.3 350 270 365 285
3×185 16.2 5.5 2×0.5 3.5 79.5 10436.6 6985.6 400 310 410 320
3×240 18.4 5.5 2×0.8 3.7 84.7 12398.2 7921.3 465 360 475 370
3×300 20.5 5.5 2×0.8 3.8 89.7 14533.0 8936.9 535 420 535 420
3×400 23.5 5.5 2×0.8 4.1 98.2 18934.3 11472.8 615 485 605 480
TECHNICAL PARAMETERS

Max. Permissible D.C. resistance of conductor at 20℃

Nominal section area (mm2)

Copper conductor(Ω/km)

Aluminum conductor(Ω/km)

1.5

12.1

-

2.5

7.41

12.1

4

4.61

7.41

6

3.08

4.61

10

1.83

3.08

16

1.15

1.91

25

0.727

1.20

35

0.524

0.868

50

0.387

0.641

70

0.268

0.443

95

0.193

0.320

120

0.153

0.253

150

0.124

0.206

185

0.0991

0.164

240

0.0754

0.125

300

0.0601

0.100

400

0.0470

0.0778

500

0.0366

0.0605

630

0.0283

0.0469
Max. Permissible short-circuit current for conductor (reference value)

Nominal section area (mm2)

Maximum permissible short-circuit current for conductor(1s)（KA）

Copper conductor

 Aluminum conductor

1.5

0.12

0.13

2.5

0.32

0.22

4

0.50

0.34

6

0.76

0.51

10

1.51

0.99

16

2.39

1.56

25

3.69

2.42

35

5.15

3.37

50

7.31

4.79

70

10.2

6.68

95

13.8

9.03

120

17.4

11.4

150

21.7

14.2

185

26.7

17.5

240

34.6

22.6

300

43.1

28.2

400

57.4

37.65

500

71.7

47.0

630

88.8

58.0