Arcwire PA 200 Polyamide-imide Overcoat Enamel
Polyamide-imide overcoat applied over an Arcwire PV 180 base in the final passes of the enamelling line, giving class 200 N dual coat wire. The overcoat carries the abrasion resistance, cut-through temperature and hydrolysis resistance, while the base carries most of the build.
Grade Arcwire PA 200 | Range Electrical Insulation and Wire Enamels | Technology Polyamide-imide resin in organic solvent
Technical Data Sheet
Arcwire PA 200
Issue 2026.09
1. Product description
A polyamide-imide overcoat applied over an Arcwire PV 180 base in the final passes of the enamelling line to give a class 200 N dual coat wire. The overcoat carries the abrasion resistance, the cut-through temperature and the hydrolysis resistance while the base carries most of the film build, so the two are specified and cured as a pair and the adhesion between the layers is part of the specification. This is the standard construction for hard-wound stators, pull-in windings and machines that see repeated thermal overload.
2. Features
- Class 200 N as a dual coat system over Arcwire PV 180
- Abrasion and cut-through resistance for hard winding and pull-in
- Hydrolysis resistance from the polyamide-imide topcoat
- Typically 10 to 30 per cent of total film build
- Base and overcoat specified and cured as a pair, with interlayer adhesion part of the specification
3. Recommended uses
Dual coat winding wire for hard-wound stators, pull-in windings and machines that see repeated thermal overload.
Substrates. Cured polyesterimide base enamel on round or rectangular copper or aluminium conductor. Not applied directly to bare conductor.
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | Polyamide-imide resin in organic solvent | Formulation |
| Appearance | Clear brown liquid | Visual inspection |
| Non-volatile matter | 25 to 35 per cent by weight | ISO 3251 |
| Resistance to abrasion, unidirectional scrape | Stated for the conductor diameter and build supplied; raised by the overcoat above that of the base enamel alone | IEC 60851-3 |
| Thermal class of the material | 200 N as a dual coat system | IEC 60085 for the designation; thermal endurance to IEC 60216-1 |
| Temperature index, dual coat wire | 200 to 220 at the 20 000 h reference | IEC 60172 |
| Cut-through, softening under load | 320 °C to 350 °C, 120 K to 150 K above the rated thermal class | IEC 60851-6 |
| Heat shock | No cracking after 30 min at 220 °C (class temperature plus 20 K), wound on a mandrel of 1 to 5 times the conductor diameter | IEC 60851-6 |
| Flexibility and adherence after elongation | No cracking or separation of the layers after 15 to 32 per cent elongation followed by winding on a mandrel of 1 to 3 times the conductor diameter | IEC 60851-3 |
| Resistance to solvents and to refrigerants | No film softening, blistering or loss of adhesion after the specified exposure and reheating | IEC 60851-4 |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Method | Last two to four passes on the same enamelling line as the base, die or felt application |
| Substrate | Cured Arcwire PV 180 polyesterimide base on round or rectangular copper or aluminium conductor; not applied directly to bare conductor |
| Base cure | Base cured enough to carry the topcoat and not so far that the two layers fail to bond; the starting pass is agreed for the line |
| Build | Typically 10 to 30 per cent of total film build, to a grade 1 or grade 2 total |
| Viscosity adjustment | Adjust only with the thinner specified for the grade, to suit die or felt application |
| Cure | Same oven sequence as the base |
| Terminations | Not directly solderable: terminations are stripped, welded or crimped |
Process. Applied as the last two to four passes on the same enamelling line, typically 10 % to 30 % of total film build, and cured in the same oven sequence as the base. The base must be cured enough to carry the topcoat and not so far cured that the two layers fail to bond. Thermal class 200 N as a dual coat system.
6. Storage and handling
Store in the original closed containers indoors, in a dry place away from direct heat and frost, and stir before charging the applicator. Shelf life is stated on the label and Certificate of Analysis. Handle and use the product in line with its Safety Data Sheet.
7. Safety and regulatory information
Read the Safety Data Sheet before use. Safety Data Sheets and regulatory declarations are issued by our technical centre against the product and batch supplied, so they are sent on request rather than published. Request a Safety Data Sheet or declaration.
This Technical Data Sheet is published for on-screen reference. The information is given in good faith from laboratory and application experience and describes typical values; it is not a specification and does not replace a trial on your own substrate and line. Arctic Materials may revise this sheet without notice. Issue 2026.09.
Technical Data Sheets on this site are for on-screen viewing. For a controlled copy, write to tech@arcticmaterials.com.
Other grades in this range
Need a Safety Data Sheet, a regulatory declaration or a grade specified to your line? Contact our technical centre.