T2 Copper Busbar for Transformers
T2 Copper Busbar for Transformers
The technical specification for copper busbar:
| Parameter Item | Parameter Value |
|---|---|
| Material Grade | T2 (TMY Copper Busbar) |
| Copper Purity | ≥99.95% |
| Electrical Conductivity (20℃) | ≥58.5 MS/m (97% IACS) |
| Tensile Strength (Hard Temper) | ≥295 MPa |
| Elongation (Soft Temper) | ≥40% |
| Tin Coating Thickness (Tin-Plated Type) | 5–10 μm (15μm customizable) |
| Standard Sizes (Width × Thickness) | 30×3, 40×4, 50×5, 60×6, 80×8, 100×10 mm; Length customizable (3m/6m/custom) |
| Insulation Class Compatibility | Class F (155℃), Class H (180℃) |
| Contact Resistance (After Crimping) | ≤10 μΩ |
| Executive Standard | GB/T 5585.1-2019, IEC 60228 |
Selection Guide & Installation Recommendations:
01
Specification Calculation Determine the cross-section based on rated current, ambient temperature, and cooling method. Reduce current-carrying capacity by 10–15% for dry/closed environments. Example: 1000A usually uses 60×6 mm (360 mm²) busbar.
02
Surface Treatment Selection Bare copper for indoor dry environments; tin-plated (preferred) for humid/outdoor/coastal areas; silver-plated for high-frequency and precision applications.
03
Customization Process Provide drawings/current/transformer model → Quotation → Confirm process → Production → Quality inspection → Delivery.
Application Scenarios
Oil-immersed/dry-type transformers: Low-voltage lead-out busbars, winding lead-out wires, neutral point connections, and grounding busbars.
Box-type substations (European/American style): Connection between high-low voltage cabinets and transformers for long-term outdoor operation.
PV/wind power transformers: High-current busbars for inverter side, withstanding high frequency and inrush current.
Industrial special transformers: Kiloampere-level DC busbars for smelting and electrolysis transformers.
