Mica-over-Enamel Rectangular Copper Conductor
ISO-CU-EMK-F200
CROSS-SECTION & LAYERS
Mica Insulated 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 Transmission Facilities
In switchgear and busbar connections; with busbar, rod and braided conductors.
View Sector
Wind Turbine Generators
In nacelle generator windings; with high thermal-class insulated wires.
View Sector
Electric Motor Factories
In stator and rotor slots; with enamelled round and flat winding wires.
View Sector
ALSO Frequency-converter-driven motors
Generator stator bars
High-voltage machine windings
Traction motors
Product Description
In this product two different insulation mechanisms work on top of each other. The enamel layer on the conductor provides inter-turn insulation at low thickness; the mica tape wound over it forms protection against partial-discharge (corona) erosion and thermal overloads.
In machines driven by frequency converters, the very short rise-time impulse voltages cause an uneven voltage distribution across the first turns of the winding. While organic insulations erode over time under this condition, the inorganic mica structure resists for a long time. The composite structure meets both requirements in a single product.
Mica-based insulation materials are assessed to the IEC 60371 series; conductor dimensions are set to the IEC 60317 series approach. Tape width and overlap ratio are chosen according to the winding geometry and the targeted insulation thickness.
Applications
Frequency-converter-driven motors, generator stator bars, high-voltage machine windings, traction motors.
Related Products
Bare Round Copper Conductor
ISO-CU-BAR-R
Mica-Covered Rectangular Copper Conductor
ISO-CU-MKA-F240
Mica-Covered Round Copper Conductor
ISO-CU-MKA-R240Technical Documentation
| Conductor Material | Electrolytic Copper (Cu-ETP, 99.9%) |
| Standard | IEC 60371 |
| Conductor Size | 2 – 12.5 mm |
| Thickness / Grade | 0.80 – 4.00 mm |
| Surface | Annealed |
| Product Code | ISO-CU-EMK-F200 |
| Thermal Class | Class 200 (N) |
| Build Increase | 0.80 – 4.00 mm |
| Conductor Section | 1.50 – 49.00 mm² |
| Insulation Type | Enamel + mica tape (glass-fibre carrier) |
| Winding Type | Helical tape winding, 50% overlap |
| Test Certificate | IEC 60851 test report + mica tape declaration of conformity |
| Impregnation Compatibility | Suitable for VPI (vacuum-pressure impregnation) systems |
Mica Tape Insulation Structure
| Winding Layer | Tape Width (mm) | Overlap Ratio (%) | Total Build Increase (mm) | Thermal Class |
|---|---|---|---|---|
| Enamel + 1 layers mica tape | 20 | 50 | 0.25 | Class 200 (N) |
| Enamel + 2 layers mica tape | 20 | 50 | 0.45 | Class 200 (N) |
| Enamel + 2 layers mica + glass fibre | 25 | 50 | 0.60 | Class 200 (N) |
| Enamel + 3 layers mica tape | 25 | 50 | 0.65 | Class 220 (R) |
Conductor Dimension and Weight Table (uninsulated section)
| Width b (mm) | Thickness a (mm) | Corner Radius r (mm) | Section (mm²) | Approx. Weight (kg/km) |
|---|---|---|---|---|
| 2.50 | 1.00 | 0.35 | 2.41 | 21.4 |
| 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 |
Our Mica-over-Enamel 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: IEC 60371
- Conductor material: Electrolytic Copper (Cu-ETP, 99.9%)
- Thermal class: Class 200 (N)
- Wall thickness: 0.80 – 4.00 mm
- Diameter range: 2 – 12.5 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.