Bare Rectangular Copper Conductor
ISO-CU-BAR-F
CROSS-SECTION & LAYERS
Flat Wires
The core and insulation layers are shown to scale as a representation; refer to the datasheet for exact thickness and tolerance values.
APPLICATIONS
Where Is This Product Used?
The gold area in the scenes shows where the conductor sits in the machine.
Power Transformer Manufacturers
In LV/HV windings and regulation taps; as paper and film insulated conductor.
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Power Transmission Facilities
In switchgear and busbar connections; with busbar, rod and braided conductors.
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Wind Turbine Generators
In nacelle generator windings; with high thermal-class insulated wires.
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ALSO Power transformer windings
Dry-type transformers
Reactor and choke coils
Busbar and connection elements
Current transformers
Product Description
Flat bare copper conductor is the basic semi-finished product used in manufacturing methods where the insulation of transformer and reactor windings is applied on the winding line. The rectangular section gives a markedly higher fill factor than round in the same bobbin window; this means lower resistance and less copper loss in the same physical volume.
The product is drawn from Cu-ETP grade electrolytic copper and annealed in a controlled atmosphere. After annealing, elongation at break rises and hardness drops; the conductor takes shape in tight-radius windings without cracking at the corners. The corner radius is machined within a thickness-dependent tolerance so the paper or tape insulation applied over it seats without gaps.
Supplied to EN 13601; on request an ASTM B49 certificate for electrical-purpose copper bar is issued. Delivery is in continuous lengths on wooden or steel reels; cut-to-length can be applied to project needs.
Applications
Power transformer windings, dry-type transformers, reactor and choke coils, busbar and connection elements, current transformers.
Related Products
Technical Documentation
| Conductor Material | Electrolytic Copper (Cu-ETP, 99.9%) |
| Standard | EN 13601 |
| Conductor Size | 2 – 16 mm |
| Thickness / Grade | 0.80 – 5.60 mm |
| Surface | Annealed |
| Product Code | ISO-CU-BAR-F |
| Thermal Class | According to insulation system |
| Build Increase | 0.80 – 5.60 mm |
| Conductor Section | 1.50 – 90.00 mm² |
| Insulation Type | Bare (uninsulated) |
| Winding Type | Reel / drum, continuous length |
| Test Certificate | EN 10204 3.1 (kimyasal analiz + iletkenlik) |
Flat Copper Conductor Dimension and Weight Table
| Width b (mm) | Thickness a (mm) | Corner Radius r (mm) | Section (mm²) | Approx. Weight (kg/km) |
|---|---|---|---|---|
| 2.00 | 0.80 | 0.30 | 1.52 | 13.5 |
| 3.15 | 1.25 | 0.40 | 3.80 | 33.8 |
| 4.00 | 1.60 | 0.50 | 6.19 | 55.0 |
| 5.00 | 2.00 | 0.65 | 9.64 | 85.7 |
| 6.30 | 2.24 | 0.65 | 13.75 | 122.2 |
| 8.00 | 2.50 | 0.80 | 19.45 | 172.9 |
| 10.00 | 3.15 | 0.80 | 30.95 | 275.1 |
| 12.50 | 4.00 | 1.00 | 49.14 | 436.9 |
| 16.00 | 5.00 | 1.25 | 78.66 | 699.3 |
Our Bare Rectangular Copper Conductor product is supplied in accordance with internationally accepted manufacturing and inspection standards. Dimensional tolerances, material chemical analysis and mechanical values meet the requirements of the relevant standard.
- Manufacturing standard: EN 13601
- Conductor material: Electrolytic Copper (Cu-ETP, 99.9%)
- Thermal class: According to insulation system
- Wall thickness: 0.80 – 5.60 mm
- Diameter range: 2 – 16 mm
- Visual inspection and dimensional control are carried out before shipment.
If your project requires a different standard, you can consult our technical team for alternative products.
On request, the products we supply are shipped together with an EN 10204 3.1 material certificate. Our quality management system and product documents are updated regularly; batch-based traceability is provided.
Communicating your certificate request at the quotation stage speeds up the shipment process.
ISO 9001:2015 Quality Management System
ISO 14001 Environmental Management System
ISO 45001 Occupational Health and Safety Management System
EN 10204 3.1 Material Certificate
IEC 60317 Declaration of Conformity
IATF 16949 Automotive Quality Management System
REACH Declaration of Conformity
RoHS Declaration of Conformity
Note: The values in the datasheet are nominal. For requests outside the standards and dimensions above, reach us through the quote form; non-catalogue dimensions are planned according to the production schedule.