Enamelled aluminium winding wire
One product sits in this category: Novaton HeatLine 200 AL, a round enamelled aluminium winding wire made at the Akvaton plant in Rivne, Ukraine.
A word on naming first. North American practice calls this aluminum magnet wire, and enameled aluminum wire means the same thing again. Spelling varies by market; the specification behind every one of those names is IEC 60317-25.
The conductor is AL 99.7 aluminium to EN 1715, grade EN AW-1370. Insulation is a two-layer enamel: a base coat based on polyester or polyesterimide, an outer coat based on polyamide-imide. That pairing delivers thermal class 200 along with resistance to transformer oils, solvents and Freon, so the wire keeps its properties in windings that meet both heat and technical fluids.
Two grades are made, differing in enamel build. Grade 2 carries roughly twice the coating, which buys dielectric margin. Grade 1 keeps the overall diameter down, which is what matters when slot fill is the limiting factor.
Technical data
- Specification: IEC 60317-25; test methods to IEC 60851; production certified to ISO 9001
- Diameters: 0.40–2.50 mm in 36 sizes; limit deviations from ±0.005 to ±0.025 mm
- Thermal class 200: temperature index ≥200 °C, thermal shock 220 °C, insulation thermoplasticity 320 °C
- Breakdown voltage: 2300–5000 V
- Conductor resistivity: 0.028 Ω·mm²/m
- Relative elongation: from 10–15% and above
- Minimum insulation thickness: 0.021–0.042 mm for Grade 1, 0.040–0.079 mm for Grade 2, depending on diameter
The full dimensional table for both grades — nominal diameter, limit deviation, minimum insulation thickness, maximum outer diameter — is in the datasheet PDF on the product page.
Applications
Motor stators, oil-cooled transformers, dry-type insulated transformers and welding transformers account for most of it.
The second case, and the one this wire is specified for outright, is lightweight structures. Where the mass of a winding counts as much as its resistance, aluminium takes real weight out of the assembly. Freon resistance also makes it usable in windings inside refrigeration circuits.
Aluminium or copper
The question every designer asks first, so here it is in numbers.
Aluminium has a resistivity of 0.028 Ω·mm²/m against roughly 0.0175 for copper. Matching the winding resistance therefore needs a cross-section about 1.6 times larger, which means the core window has to have room to spare.
What you get back is weight. Aluminium is around three times lighter than copper, so at equal resistance the winding comes out almost half the mass — and the material cost is markedly lower.
The rule of thumb: aluminium pays off where there is space for a bigger cross-section and where weight and budget shape the design. Copper wins where power density and envelope are critical.
Ordering, packaging and delivery
Standard packaging is spools K250, K400, K315/500 and K400/630. Minimum order on standard items is 3 kg for customers in Ukraine and 20 kg for deliveries to the EU. Non-standard diameter, enamel grade or packaging is produced to your technical specification — send the requirement and our engineers confirm feasibility.
The plant has run since 1991, with a combined capacity of about 350 tonnes per month of finished copper and aluminium enamelled wire. Every batch passes three-stage control in our own laboratory — incoming rod, in-process geometry and insulation, final electrical tests — and ships with a test report.
Customers in Ukraine buy from the plant directly, with no intermediary. Deliveries inside the European Union go through Elktrim in Poland, our official representative, which handles warehousing, logistics and customs clearance, with the contract concluded in euro.
