Copper Flexible Connections for Bus Duct & Busway Systems
Custom-engineered copper braided and laminated flexible connections for low, medium and high-voltage bus duct installations worldwide.
What Are Bus Duct Flexible Copper Connections?
Bus duct systems require flexible electrical connections to absorb thermal expansion, vibration, and installation misalignment between rigid busbar sections. Yulian manufactures copper braided and laminated flexible connectors specifically designed for bus duct and busway applications — ensuring reliable current transfer under demanding conditions.
Our flexible bus duct connectors are made from high-purity C11000/C10200 electrolytic copper, available in bare copper, tin-plated, nickel-plated, or silver-plated finishes. Each connector is custom-fabricated to your exact specifications: cross-sectional area, length, terminal hole patterns, and bending requirements.
Product Types for Bus Duct Applications
Braided Flexible Connectors
- Multi-layer copper braid construction
- Excellent vibration absorption
- Available in bare / tinned / silver-plated
- Custom terminal ends: flat, tubular, angled
- Cross-section: 6 mm² – 600 mm²
- Ideal for: bus duct expansion joints, transformer connections
Laminated Copper Flexibles
- Stacked 0.1–0.5 mm copper foils, diffusion or press-welded ends
- Low inductance, high current capacity
- Custom stacking: 2–50+ layers
- Insulation options: PVC, silicone, heat-shrink
- Current: 100 A – 6300 A
- Ideal for: compact busway sections, switchgear
Key Benefits
- Thermal compensation: Absorbs linear expansion of copper busbars under load — prevents stress on rigid connections and insulators.
- Vibration damping: Multi-layer braided construction isolates mechanical vibration between busbar sections, extending system life.
- Installation tolerance: Compensates for ±5 mm misalignment in bus duct assembly, reducing on-site fitting time.
- 100% custom sizing: Every connector is made to your drawings — no standard-size compromise.
- Full traceability: Material certificates (C11000/C10200), dimension reports, and resistance test data provided with each order.
Typical Applications
- Low-voltage bus duct (400 V–1000 V): commercial buildings, data centers, industrial plants
- Medium-voltage busway (3.3 kV–36 kV): power plants, substations, heavy industry
- Wind & solar farm collection: flexible links between inverter output and MV transformer
- Generator bus connections: phase-isolated bus duct flexible connectors for turbine-generator sets
Technical Specifications
| Parameter | Braided Type | Laminated Type |
|---|---|---|
| Copper grade | C11000 / C10200 | C11000 / C10200 |
| Current range | 63 A – 3000 A | 100 A – 6300 A |
| Cross-section | 6 mm² – 600 mm² | 10 mm² – 1200 mm² |
| Working temperature | -40 °C to +105 °C | -40 °C to +125 °C |
| Flex life | > 100,000 cycles | > 50,000 cycles |
| Surface treatment | Bare / Tinned / Silver | Bare / Tinned / Nickel / Silver |
| Standards | IEC 61439 / IEC 60228 / GB/T 5585 | |
Custom Bus Duct Connectors — Engineered to Your Spec
Send your bus duct drawings, current rating, and installation environment — we'll fabricate and quote within 24 hours.
Custom Bus Duct Connectors — Engineered to Your Spec
Send your bus duct drawings, current rating, and installation environment — we'll fabricate and quote within 24 hours.