Tri-2-sod is a solderable, Thermal Class 180 polyesterimide wire enamel that meets the requirements of NEMA MW1000, 77-C or 78-C (when applied with a Nylon overcoat, Tri-2-sod/Nylon). The Nylon top coat is applied to reduce the coefficient of friction during winding and/or insertion.
This coating combination can be applied as a basecoat when self-bonding magnet wire is required for a customer’s specific coil winding/forming operation.
Tri-2-sod/Nylon can be soldered without the use of flux (on copper substrates), but soldering temperature and time are increased when directly compared to the Poly 180B/Nylon coating combination.
Tri-2-sod/Nylon is similar to the Tri-2-sod with the additional Nylon overcoat to improve the abrasion resistance. Typical of a dual coat construction, advantage is taken of the high thermal properties of the polyester-imide and the mechanical properties of the polyamide topcoat.
Typical applications are within fractional and integral horsepower motors, coils and relays, control and dry transformers, encapsulated coils and D.C. field coils.
Electrical properties
| NEMA MW1000 |
ASTM D1676 |
IEC 851 | JIS C3003 | MW 77-C (Heavy), 18 AWG |
MW 78-C (Heavy), 18 AWG |
|
| Dielectric strength @ 25°C |
3.8.1.1 | 69-75 | 13-4.2,3,4 | 11.1 | 14.0 kV | 13.5 kV |
| Dissipation factor @ 220°C - 1kHz |
107-114 | 0.05 | 0.14 | |||
| Tangent delta (DIN) | 166°C | 55/ 164°C |
Mechanical properties
| NEMA MW1000 |
ASTM D1676 |
IEC 851 | JIS C3003 | MW 77-C (Heavy), 18 AWG |
MW 78-C (Heavy), 18 AWG |
|
| Adherence and flexibility | ||||||
| No snap | 3.3.1.1 | 141-148 | 8.5.1.1 | 8.1 | Pass | Pass |
| 20% snap | 3.3.1.1 | 141-148 | 9.1 | Pass | Pass | |
| Cut-through temperature | 3.50.1.1 | 61-68 | 306°C | 264°C | ||
| Solderability 455°C (no flux) | 3.13.1.1 | 178-185 | 5.5 sec. | 6.0 sec. |
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials.