Flexible Busbars for Switchgear
Reliable high-current connections for power distribution equipment. Our flexible busbars compensate for thermal expansion and vibration while maintaining excellent electrical performance.
Key Features
Thermal Expansion Compensation
Absorbs dimensional changes caused by heating during high-current operation, preventing stress on terminals and insulators.
Vibration Isolation
Flexible construction isolates vibrations from rotating machinery, preventing fatigue failures and loosening of connections.
Misalignment Tolerance
Accommodates manufacturing tolerances and installation variations between connection points.
Easy Installation
Flexible design simplifies installation in confined spaces and reduces assembly time compared to rigid alternatives.
Why Use Flexible Busbars in Switchgear?
In switchgear and transformer applications, electrical connections must carry high currents while accommodating mechanical stresses. Rigid busbars transmit these stresses to insulators and terminals, potentially causing damage over time.
Flexible busbars act as stress-relief elements, absorbing thermal expansion, contraction, and vibration. This protects sensitive equipment and extends the service life of the entire installation.
The laminated construction also provides lower inductance compared to solid conductors, which is beneficial in applications with high switching frequencies or transient currents.
Common Applications
- Low and medium voltage switchgear
- Power transformers
- Circuit breaker connections
- Disconnect switch links
- Bus duct systems
- Generator connections
- Capacitor bank connections
- Reactor connections
Technical Specifications
| Current Rating | 100 A - 10,000 A |
| Voltage Class | Up to 36 kV |
| Conductor Material | ETP Copper (99.9%+ purity) |
| Lamination Thickness | 0.1 - 0.3 mm |
| Insulation Class | Class B, F, or H |
| Temperature Range | -40°C to +150°C |
| Terminal Options | Drilled holes, palm terminals, custom |
| Surface Treatment | Bare, tin-plated, silver-plated |
Design Considerations
Current Capacity
- Cross-sectional area determines ampacity
- Number and thickness of laminations
- Operating temperature limits
- Duty cycle considerations
Mechanical Requirements
- Expected thermal movement range
- Vibration frequency and amplitude
- Installation space constraints
- Terminal orientation and spacing
Environmental Factors
- Indoor or outdoor installation
- Humidity and corrosion resistance
- Altitude and air density
- Contamination and pollution levels
Insulation Options
PVC Sleeving
Up to 105°C
Cost-effective general purpose insulation
Heat Shrink
Up to 125°C
Tight-fitting moisture-resistant covering
Kapton Film
Up to 200°C
High-temperature polyimide insulation
Silicone Rubber
Up to 180°C
Flexible high-temperature insulation
Related Products
Need Custom Switchgear Busbars?
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