Cu-Al Transition Busbar For Wind Power
The core advantage for Cu-Al Transition Busbar
1.Anti-Corrosion & Longevity
2.Excellent Conductivity & Low Energy Loss
3.High Mechanical Strength & Stability
4.Easy Installation & Wide Compatibility
The Technical Specific For Cu-Al Transition Busbar
Parameter Category |
Technical Data |
Matched with the fan power |
1.5MW - 15MW (Land-based / Offshore) |
Applicable voltage level |
0.69kV - 35kV |
Rated current |
500A-3000A |
Rated short-term withstand current (4S) |
25kA、31.5kA、40kA、50kA |
Contact resistance |
≤ 50μΩ (initial value) |
Working temperature |
-40℃~150℃ |
Connection method |
Screw fixation |
Material combination |
Purple copper (T2) + Pure aluminum (1060) |
Surface treatment |
Tinned / Silver-coated (optional) |
The Application For Cu-Al Transition Busbar
1. Internal connections of wind turbine generator cabins:
• Transition connection between generator stator/rotor copper terminals and the aluminum busbar of the cabin (suitable for doubly-fed and direct-drive generators)
• Connection between copper components in the cabin control cabinet and the aluminum busbar (such as the wiring terminals of frequency converters and contactors)
• Copper-aluminum connection between slip ring boxes and the cabin power distribution system (able to withstand the rotating vibration environment of the wind turbine)
2. Connection of box-type transformers (box transformers):
• Transition connection between the copper bushings on the high-voltage side (10kV-35kV) of the box transformer and the aluminum busbar
• Connection between the copper terminals on the generator side of the low-voltage side (0.69kV) and the aluminum busbar of the box transformer
• Transition connection of copper-aluminum wiring terminals for internal components such as transformers and lightning arresters in the box transformer
3. Connection of combiner boxes / inverters:
• Connection between the copper terminals in the combiner box and the aluminum busbar of the combiner box in photovoltaic-wind hybrid projects
• Transition connection between the copper terminals at the input/output of the inverter and the aluminum busbar (suitable for high current and high-frequency start-stop scenarios)
4. Connection of step-up stations / collection lines:
• Transition connection between the copper busbar of the switch cabinet in the wind farm step-up station and the aluminum collection line
• Transition connection between the aluminum collection line and the copper busbar bridge when multiple wind turbines operate in parallel
• Terminal connection between the submarine cables (copper core) of the offshore wind farm and the aluminum busbar of the land-based step-up station

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