Aluminium tubular busbar

Aluminium tubular busbar refers to the seamless aluminium Tube Pipe which is extruded from pure aluminium or aluminium alloy to be hollow along its longitudinal length. The common alloys of aluminium tubular busbar are 6063, 6061 and 6101. The 6063 alloy is widely used in outdoor high-voltage substation Bus Tube Pipe due to its excellent mechanical and electrical properties. In the case of high strength and low conductivity, the 6061 aluminum alloy bus Tube Pipe is used. In the case of high electrical conductivity and minimum mechanical loss, 6101 alloy Bus Tube Pipe is used.

aluminium tubular busbar

It has good shielding effect and strong anti-interference ability

Specs of aluminium tubular busbar:

Implementation standard: GB/T27676-2011 aluminum and aluminum alloy bus tube pipe conductor or ASTM B 317M-07

Alloy: 6063,6101, 6061

Temper: T6 

Surface:  The product is hollow tubular structure with glossy surface, beautiful appearance and uniform size.

OD: from 60mm to 450mm.

Wall thickness:  3mm to 15mm.

Length: a single bus tube pipe conductor can reach up to 15 meters.

Advantages of aluminium tubular busbar:

  1. Has good shielding effectiveness and strong anti-interference ability.
  2. Wall thickness, mechanical strength is better;
  3. Has low loss, large capacity and wide frequency band.
  4. Not crack, not easy to damage.
  5. We have many ready mould, so as to save client cost.

The Chemical composition and Mechanical properties of aluminium tubular busbar

Alloy

Chemical component(%)

Si

Fe

Cu

Mn

Mg

Cr

Zn

B

Ti

Ni

Other

Al

Each

Total

 

6063(6063G)

0.2-

0.6

≤0.35

≤0.1

≤0.1

0.45-

0.9

≤0.10

-

≤0.05

≤0.15

Remain

6101

0.30-

0.7

≤0.50

≤0.10

≤0.03

0.35-0.8

≤0.03

≤0.10

0.06

-

≤0.03

≤0.10

Remain

Property / Alloy

6101

6063

Temper

T6

T6

Density(g/cm³)(20℃)

2.73

2.75

Melting point  ℃

616-665

630-650

Tensile Strength MPa

≥210

≥205

Yield strength MPa

≥185

≥175

Elongation %

≥8

≥8

Thermal conductivity,

(K /℃ x cm x s)

0.5

0.5

Electrical Conductivity IACS%

52

52

20℃ Temperature coefficient of electrical  resistance

I/℃

0.0032

0.0041

20℃ Electrical Resistivity

β,Ω.m㎡/m

0.031

0.034

Poisson's Coefficient μ

0.31

0.315

The external diameter allowable deviation and wall thickness allowable deviation of aluminium tubular busbar

The external diameter allowable deviation (unit: mm)

Nominal  external diameter

>50~75

>75~120

>120~150

>150~200

>200~250

Normal level ±

0.23

0.30

0.40

0.60

0.80

High Precision level ±

0.15  

0. 20

0.30

0.50

0.70

The Wall thickness allowable deviation (unit: mm)

Nominal Wall Thickness

>3.0~4.0

>4.0~5.0

>5.0~8.0

>8.0~10

>10~15

Average wall thickness and

Nominal Wall Thickness  ±

Normal level

0.30

0.40

0.50

0.70

0.80

High Precision level

0.15

0.15

0.20

0.30

0.40

Any wall Thickness and

Nominal Wall Thickness  ±

Normal level

0.40

0.50

0.60

0.80

1.00

High Precision level

0.20

0.20

0.30

0.40

0.50

Application of aluminium tubular busbar:

Aluminium tubular busbar is mainly used as overcurrent conductor in power construction projects, such as conductor connection between power grid transmission conductor and transformer substation, jumper in transmission line, connection conductor in power equipment and high current DC ice melting device,It is a new conductor to replace the traditional rectangular, groove, bar-shaped bus and soft conductor.

It is one of the key equipment (materials) in power transmission and transformation system, and plays a vital role in the safe and reliable operation of power transmission and transformation system and power equipment.

Common tubular busbar, Liner tube & sealing ball size or sealing cover size.

Main Bus Pipe Tube

Liner Bus Pipe Tube

Sealing ball  or

Sealing cover

OD

(mm)

Wall Thickness

(mm)

OD

(mm)

Wall Thickness

(mm)

OD

(mm)

80

4

71

3

70

90

5

79

4

79

100

5

89

5

89

110

5

99

5

99

120

5

109

5

109

130

7

115

7

115

150

7

135

7

135

150

10

129

10

129

170

7

155

7

155

170

10

149

10

149

200

10

179

10

179

250

10

229

10

229

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