Bare copper stranded conductor

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Product Description

The bare copper strand conductor also are known as bare copper conductor, ground copper and bare copper strand. They have two main types, the hard drawn and soft drawn (tinned soft drawn). 

The stranded bare copper is the connection of electrical equipment for transmission and distribution (such as transformer, the electric cabinet of the electric furnace), electronic and electrical equipment, and SCR components, and can also be used as ground wire for electrical operation.

 

Standard 

BS EN 60228 / IEC 60228 

 

Advantages:

Excellent conductivity: High-purity copper ensures low resistance of the wire and reduces energy loss.

Good flexibility: The twisted structure makes the wire flexible and easy to install and wire.

Strong corrosion resistance: Copper has good corrosion resistance and is suitable for a variety of environmental conditions.

High mechanical strength: The twisted design enhances the tensile strength of the wire and adapts to complex installation environments.

 

Product Features

High Tensile Strength
Hard drawn copper offers excellent resistance to mechanical stress, sagging, and breakage—ideal for long-span and overhead applications.

Stranded Flexibility
The concentric stranded design increases flexibility, making installation easier and improving resistance to vibration and bending stress.

Good Electrical Conductivity
While slightly lower than annealed copper, hard drawn copper still provides efficient power transmission for medium to high-voltage systems.

Corrosion Resistance
Bare copper provides natural resistance to corrosion, extending service life in outdoor and urban environments.

Low Maintenance
Suitable for applications where long-term durability and minimal maintenance are required.

 

Technical Infomation

Construction characteristics

Conductor material

Electrolytic, stranded and bare copper

Conductor class

Class 2 according to BS EN60228

Usage characteristics

Minimum Installation Temperature

0°C

Maximum Installation Temperature

60°C

Minimum Operating Temperature

-15°C

Maximum Operating Temperature

70°C

Maximum conductor temperature

90°C

Linear resistance @20°C

According to BS EN60228 / IEC 60228

Short-circuit max. conductor temperature

370°C

Mechanical characteristics

Min. Bending Radius

35mm^2 up to 400mm^2 = 6 x OD

 

 

Product structure and parameter

                   

        

                                                                                                                                 Solid

Size

Section

Number
Of
Wires

Wire Diameter

Conducto
Diameter

Resistance
DC @20℃

Minimum
Wire
Elongation  Before
Stranding

Minimum
Tensile
Strenght

Minimum Tensile
Strenght
After
Stranding

Total
Weight

AWG/MCM

Cmils

mm²

mm

mm

Q/km

%

kg/mm²

kg

kg/km

4

41740

21.1 

1.96 

5.88

0.865 

1.1

46.4 

883 

192

2

66360

33.6 

2.47 

7.42

0.544 

1.2

45.4 

1373 

305

1/0

105600

53.5 

19 

1.89 

9.47

0.342 

1.1

46.4 

2234 

485

2/0

133100

67.4 

19 

2.13 

10.6

0.271 

1.1

45.9 

2785 

611

4/0

211600

107.2 

19 

2.68 

13.4

0.171 

1.2

45.4 

4379 

972

250

250000

126.7 

37 

2.09 

14.6

0.144 

1.1

45.9 

5231 

1149

300

300000

152.0 

37 

2.29 

16

0.120 

1.1

45.9 

6278 

1379

350

350000

177.3 

37 

2.47 

17.3

0.103 

1.2

45.4 

7243 

1609

400

400000

202.7 

37 

2.64 

18.5

0.090 

1.2

45.4 

8277 

1838

500

500000

253.4 

37 

2.95 

20.7

0.072 

1.3

44.9 

10230 

2298

                             Class A 

Nominal
Sectiona
Area

Number
&
Diameter
of Wire

Overal
Diamete

Maximum
Conductor
Resistance
@20℃


Breaking
Strength

Allowable
Ampacities in Free
Air

Cable
Weight
(approx)

Standar
Packing

mm

No./mm

mm

Q/km

kgf

A

kg/km

m

10

7/1.35

4.05 

1.8054 

438 

90

90 

1000/R

16

7/1.70

5.10 

1.1385 

694 

125

143 

1000/R

25

7/2.14

6.42 

0.7185 

1076 

160

227 

1000/R

35

7/2.52

7.56 

0.5181 

1459 

200

314 

1000/R

50

7/3.02

9.06 

0.3589 

2095 

250

452 

1000/R

50

19/1.78

8.90 

0.3825 

2021 

250

428 

1000/R

70

19/2.14

10.70 

0.2646 

2921 

310

618 

1000/R

95

19/2.52

12.60 

0.1918 

3961 

380

858 

1000/R

120

19/2.85

14.25 

0.1492 

5067 

440

1097 

1000/R

150

37/2.25

15.75 

0.1238 

6289 

510

1334 

1000/R

 

 

Application 

Power transmission: used for the erection of high-voltage and low-voltage power lines to ensure a stable power supply.

Electronic equipment connection: used for signal transmission and power connection inside electronic equipment to ensure the reliability of data transmission.

Building wiring: used for electrical wiring inside buildings to meet lighting and power needs.

Automobile and transportation: used in automobile and railway systems to connect electrical systems to ensure safe operation.

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