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Flexible Copper Busbar
Copper Busbar ETP refers to busbars manufactured from Electrolytic Tough Pitch (ETP) Copper, one of the most commonly used copper grades in the electrical industry. Known for its excellent conductivity, mechanical strength, and cost-effectiveness, ETP copper is widely used in power distribution systems, switchgear, battery systems, renewable energy installations, and industrial equipment.
As modern electrical systems require higher efficiency and reliability, ETP Copper Busbars remain the preferred choice for carrying and distributing high electrical currents.
ETP Copper (Electrolytic Tough Pitch Copper), designated as C11000 under ASTM standards, is a high-purity copper containing approximately 99.9% copper with a controlled oxygen content.
Key characteristics include:
High electrical conductivity
Excellent thermal conductivity
Good formability
Easy machining and fabrication
Cost-effective performance
ETP copper typically achieves conductivity of approximately 100% IACS (International Annealed Copper Standard), making it ideal for electrical applications.
One of the primary reasons manufacturers choose Copper Busbar ETP is its superior conductivity, which minimizes energy loss during power transmission.
Benefits include:
Lower resistance
Reduced voltage drop
Improved energy efficiency
Better system performance
ETP copper efficiently dissipates heat generated by electrical currents, helping maintain safe operating temperatures.
ETP copper combines conductivity with sufficient strength and flexibility, making it suitable for complex busbar designs.
ETP copper can be:
Cut
Punched
Bent
Stamped
CNC machined
Welded
This versatility supports customized busbar manufacturing.
With proper surface treatment and installation, ETP copper busbars provide excellent durability and long-term reliability.
| Property | Typical Value |
|---|---|
| Copper Purity | ≥99.90% |
| Conductivity | 100% IACS |
| Electrical Conductivity | Approx. 58 MS/m |
| Thermal Conductivity | Approx. 390 W/m·K |
| Density | 8.89 g/cm³ |
| Tensile Strength | 200–250 MPa (depending on temper) |
| Melting Point | 1083°C |
ETP copper busbars are widely used in:
Switchgear
Switchboards
Distribution panels
Transformer connections
Energy storage systems require highly conductive busbars to connect battery modules and distribute current efficiently.
Copper Busbar ETP is commonly used in EV battery assemblies due to its low resistance and excellent thermal performance.
Solar and wind energy installations use ETP copper busbars for efficient power transmission and inverter connections.
Heavy-duty industrial machinery relies on ETP copper busbars to handle high-current electrical loads safely.
To enhance performance and corrosion resistance, ETP copper busbars may be supplied with various surface treatments.
Provides maximum conductivity and is suitable for controlled indoor environments.
Advantages include:
Improved corrosion resistance
Better solderability
Extended service life
Ideal for:
High-temperature applications
Harsh environments
Increased wear resistance
Offers:
Superior conductivity
Excellent contact performance
High-end electrical system applications
| Feature | ETP Copper Busbar | Oxygen-Free Copper Busbar |
|---|---|---|
| Conductivity | 100% IACS | Up to 101% IACS |
| Cost | Lower | Higher |
| Oxygen Content | Low | Extremely Low |
| Fabrication | Excellent | Excellent |
| General Power Applications | Ideal | Suitable |
| High-Purity Applications | Good | Preferred |
For most commercial and industrial power distribution systems, Copper Busbar ETP provides the best balance of performance and cost.
When choosing an ETP copper busbar, consider:
Busbar dimensions should match system current requirements.
Proper sizing helps prevent excessive heating.
Environmental conditions influence the choice of surface finish and insulation.
Custom hole patterns, bends, and mounting features may be required for specific equipment.
Ensure compliance with applicable electrical and safety standards.
A reliable manufacturer can provide:
Custom ETP copper busbar fabrication
CNC machining services
Precision punching and bending
Tin, nickel, and silver plating
Quality inspection and testing
Fast prototyping and production
Professional manufacturing ensures consistent quality and optimal electrical performance.
Copper Busbar ETP is one of the most widely used conductor materials for electrical power distribution due to its exceptional conductivity, thermal performance, mechanical strength, and cost efficiency. From switchgear and industrial equipment to EV battery packs and renewable energy systems, ETP copper busbars provide a reliable solution for demanding electrical applications.
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