Technical Advantages
Integrated Molding Process: Utilizing a fully automatic dual-mode discharge vacuum injection molding machine for integrated casting, the product is formed in a single cycle through pressure flow injection and high-temperature curing. The conductor, shielding layer, semiconductive crepe paper, outer shielding layer, metal shielding layer, and outer protective layer are seamlessly integrated into an inseparable monolithic structure.
LongLife Design: The product features flame-retardant properties and aging resistance, with a service life of up to 30 years.
High-quality Conductive Materials: TZ7 or higher-grade copper is selected as the conductive material, with the pure copper tube having a copper content of ≥99.90%.
Reliable Connection Technology: Insulation joints are formed in a single molding cycle and fused into one body with the copper conductor. Intermediate connections employ embedded stainless steel clamp welding. The temperature rise at the terminal joints is lower than that of the conductor body. Connections between insulation joints and equipment are achieved via flexible links secured with bolts.
| Product structure schematic diagram |
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| Voltage level (KV) |
Insulation thickness (mm) |
| 10 |
10 |
| 35 |
15 |
| 66 |
20 |
| 110 |
30 |
| 220 |
45 |
| Product structure and requirements |
Vacuum epoxy resin pouring tube busbar is poured by an automatic double liquid stirring vacuum gluing machine, pressure pouring, and high temperature curing
once formed. Conductor, inner shield layer, semi-conductive corrugated paper, outer shield layer, metal shield layer, and outer protection layer as a whole, can not be split, flame retardant, aging resistance, service life of 30 years.
The tube bus terminal joint of vacuum epoxy resin casting is formed once and integrated with a copper conductor. The middle link is welded with an embedded stainless steel hoop. The temperature rise of the terminal joint is less than that of the conductor body. The material is consistent with the structural form and material of the bus bar.
Conductor material: T2Y and above grade copper should be selected, and the copper content of pure copper pipe is ≥ 99.90%.
The maximum span of the suspended tube bus bar of vacuum epoxy resin pouring is not more than 5M.
The tube bus should have a metal shield layer, and the metal shield is made of a copper braided strip and a copper strip.
The grounding lead wire is reliably welded with copper braided tape and a metal shielding layer. The grounding points must be securely connected to the on-site grounding system. The grounding points must be fortified with waterproof and moistureproof measures. The grounding points must be marked and numbered.
The insulating outer cover of the grounding screen should be able to reliably prevent the intrusion of moisture and heat. Heat shrink insulation bushings can be used, and phase colors (yellow, green, red) are used in obvious places.
The anti-rust treatment should be applied to metal welding in site construction. All the bolts and screws used are made of hot-dip galvanized materials.
The connection between the terminal joint of the vacuum epoxy resin-poured tube bus and the equipment is made of a soft connection and a bolt fastening connection.
Requirements for the lap surface of the conductor end: the end of the copper pipe should be rounded, and the connection surface of the copper pipe end should be plated with silver or tin to ensure low contact resistance and anti-corrosion function. |
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| Product structure and requirements |
Vacuum epoxy resin pouring tube busbar is poured by an automatic double liquid stirring vacuum gluing machine, pressure pouring, and high temperature curing once formed. Conductor, inner shield layer, semi-conductive corrugated paper, outer shield layer, metal shield layer, and outer protection layer as a whole, can not be split, flame retardant, aging resistance, service life of 30 years.
The tube bus terminal joint of vacuum epoxy resin casting is formed once and integrated with a copper conductor. The middle link is welded with an embedded stainless steel hoop. The temperature rise of the terminal joint is less than that of the conductor body. The material is consistent with the structural form and material of the bus bar.
Conductor material: T2Yand above grade copper should be selected, and the copper content of pure copper pipe is ≥ 99.90%.
The maximum span of the suspended tube bus bar of vacuum epoxy resin pouring is not more than sM.
The tube bus should have a metal shield layer, and the metal shield is made of a copper braided strip and a copper strip.
The grounding lead wire is reliably welded with copper braided tape and a metal shielding layer. The grounding points must be securely connected to the on-site grounding system. The grounding points must be fortified with waterproof and moistureproof measures. The grounding points must be marked and numbered
The insulating outer cover of the grounding screen should be able to reliably prevent the intrusion of moisture and moisture. Heat shrink insulation bushings can be used, and phase colors (yellow, green, red) are used in obvious places.
Anti-rust treatment should be applied to metal welding in site construction. All the bolts and screws used are made of hot-dip galvanized materials.
The connection between the terminal joint of the vacuum epoxy resin-poured tube bus and the equipment is made of a soft connection and a bolt fastening connection.
Requirements for the lap surface of the conductor end: the end of the copper pipe should be rounded, and the connection surface of the copper pipe end should be plated with silver or tin to ensure low contact resistance and anti-corrosion function. |
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| Typical application solutions for insulated tube busbars |
Method 1: Connect the main transformer to the control room
This is the most common way of tubular busbar application. The busbar is directly connected from the low-voltage terminals of the main transformer to the
switch cabinet terminals in the control room. Main advantages: Suitable for large currents. The wiring is clear and beautiful, and can be fully insulated or semi-insulated. |
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Method 2: The busbar is routed through a cable trench or cable mezzanine
The figure below is another common way of applying tubular busbars. The busbars can be connected to switch cabinets through underground cable trenches
or cable mezzanines, and can also be used for connections between switch cabinets. This busbar is fully insulated and is particularly suitable for situations
where wiring is difficult. |
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Method 3:Tubular busbars are routed through cable trenches or cable mezzanines
This method is the top cable connection method of the switch cabinet. It can also be connected through the cable mezzanine and the bottom cable connection
method. Users can choose according to the actual situation. The busbar type is fully insulated. |
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Method 4:Tubular bus CNC monitoring system
Our company develops it by itself and implements unmanned intelligent monitoring of multiple technical data of the tube bus. |
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| Insulated tube busbar |
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Operating Environmental Conditions
Altitude: ≤4000 m
Temperature Conditions: Minimum ambient air temperature: 45°C；Maximum ambient air temperature: +60°C；Maximum daily temperature variation: 35 K
Solar Radiation Intensity: 1000 W/m²
Wind Speed Conditions: Maximum wind speed: 40 m/s
Humidity Conditions: Daily average relative humidity: ≤95% ；Monthly average relative humidity: ≤90%
Ice Cover Conditions: Ice thickness not exceeding 20 mm
Seismic Conditions: Seismic intensity: 8 degrees； Ground horizontal acceleration: 0.20 g； Ground vertical acceleration: 0.15 g； Frequency: 20 Hz； Withstand duration for sine wave: 3 cycles
Safety Factor: Greater than 1.67
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