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Composite Shielded Fully Insulated Pipe Bus
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Number of views:
1000
Product serial number
Category
Insulated Copper Pipe Bus
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+
Stock:
0
1
Product description
Parameters
1.Large ampacity
The tubular bus is an air-core conductor with a large surface area. It has been proved in practice that during current movement, the current density distributed on the surface of the conductor is much larger than the current density distributed in the center of the carrier. Compared with the rectangular bus, the tubular bus has a higher current density The flow distribution is uniform, which is more suitable as a carrier of large current intensity.
2, good heat dissipation performance
Any conductor under the action of high voltage and strong current will inevitably increase its temperature during operation. The tube-shaped conductor is hollow, has a large surface area, has good ventilation performance, fast convection, and has better heat dissipation performance than rectangular conductors. Especially copper tube bus, because of its fast heat transfer performance, under high voltage and high current working environment, it has less self-heating and greater safety.
3, low skin effect, small power loss
In the traditional process, because multiple pieces of rectangular conductors are stacked as a carrier, when the current passes through the carrier, the skin effect coefficient is continuously increased under the effect of the electromagnetic field between the rectangular conductor pieces and the pieces, and the effective current carrying capacity per unit section is increased. Obviously, the tubular conductor has a smooth surface, no edges and corners, let alone overlap, Kf≤1, thereby avoiding the defects of rectangular conductors.
4. High mechanical properties and large allowable stress
The permissible stress of the pipe bus is 4 times that of the rectangular bus. It can withstand large short-circuit currents, high mechanical strength, and large span of bus support. The span of Φ80 × 6mm pipe bus can reach 8 meters, and the span of Φ100 × 8mm pipe bus can reach 10 m. Due to the large span of the bus bar, it can directly enter the high-voltage room and be connected to the indoor current-limiting reactor or connected to the 10 kV and 35 kV switchgear, which reduces the corresponding pillar insulators, bus bar fittings, and the foundation of the earth building frame.
5.Anti-environmental interference and high safety factor
Composite shielded pipe bus adopts closed insulation layer, the external ground potential is zero, the insulation performance is good, 105KV / min in the power frequency withstand voltage test, no breakdown. It can avoid the occurrence of grounding and short circuit accidents caused by contact between people and objects during operation.
6. Convenient installation and maintenance, long service life
The main insulation materials of insulated pipe busbars are polytetrafluoroethylene and extruded cross-linked polyethylene, which can work safely in the environment of -250 ℃ -250 ℃, have excellent electrical properties and chemical stability, heat resistance, aging resistance and service life. Over 40 years.
7. The structure of the tubular bus bridge is concise, the layout is clear, the installation is convenient, the maintenance is simple, and the appearance is beautiful.
8. Basic performance
|
Project
|
Unit
|
Index
|
|
20 ℃ Resistivity
|
Ω•mm2/m
|
0.01738
|
|
Resistance Temperature Coefficient of 20 ℃
|
1/℃
|
0.00385
|
|
Density
|
g/cm3
|
8.89
|
|
Melting Point
|
℃
|
1083
|
|
Specific Heat
|
J/g•℃
|
0.3843
|
|
Thermal Conductivity
|
J/cm•S •℃
|
3.8644
|
|
Coefficient of Linear Thermal Expansion
|
1/℃
|
16.42×10-6
|
|
Elongation
|
%
|
≥3
|
|
Maximum Allowable Stress
|
Mpa
|
140
|
|
Elastic Modulus
|
Mpa
|
100000
|
|
Allowable Maximum Heating Temperature
|
℃
|
300
|
|
Tensile Strength
|
Mpa
|
≥315
|
9. Calculation Data
|
Specification
|
Ampacity (A)
|
Section Factor (cm3)
|
Inertia Radius (cm)
|
Moment of Inertia (cm4)
|
|
Φ100×10
|
6000
|
59.04
|
3.2
|
295.2
|
|
Φ100×8
|
5600
|
50.21
|
3.26
|
251.05
|
|
Φ100×6
|
4200
|
40.03
|
3.33
|
200.15
|
|
Φ100×5
|
3880
|
34.39
|
3.36
|
171.95
|
|
Φ80×10
|
5400
|
35.00
|
2.50
|
140.00
|
|
Φ80×8
|
4300
|
30.23
|
2.56
|
120.92
|
|
Φ80×5
|
3060
|
21.19
|
2.66
|
84.76
|
|
Φ60×5
|
2250
|
11.18
|
1.95
|
33.54
|
|
Φ50×5
|
1840
|
7.38
|
1.60
|
18.45
|
10, 10KV insulated pipe bus electrical test technical indicators
11.35KV insulated pipe bus electrical test technical index
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