ENAMELLED COPPER WIRE AND ALLOY
COPPER WIRES FOR ALL YOUR NEEDS
Nous présentons ici les types de fils que nous utilisons nous-même et proposons aux industriels. Nous décrivons ici les fils de cuivre nu et les fils de cuivre émaillé, mais d’autre type de fils peuvent être disponibles, sur demande. Nous proposons des fils unitaires de diamètre 0,03mm à 5,0mm.
Nous proposons de conditionner les fils selon différentes bobines plastiques (P-125/160/250).
Il est possible d’utiliser les fils de cuivre unitaires dans des domaines très variés, comme l’électronique, la robotique, les énergies renouvelables, le bobinage de machines tournantes, etc mais également pour les particuliers. Aussi le cuivre est l’élément que l’on utilise le plus couramment dans la matière des conducteurs de fils électriques.
Pour rappel, le cuivre est un matériau connu pour sa très grande conductivité, ses propriétés le rendant également malléable et très résistant.
What type of wire to choose?
The type of copper (bare, enameled, tinned, etc.) will depend on the use of the wire. The wire diameter is also to be chosen according to the application.
Enamelled copper wire is copper wire covered with varnish, enamel, coating. This coating can be of different material, such as polyester, polyurethane, polyimide, etc. The table below shows the type of varnish according to the temperature to which the wires must withstand in operation. We have drawn up a non-exhaustive list of applications requiring this type of wire, depending on the temperature. The joined enamelled wires form what are called Litz wires. You will find more information and the advantages of Litz's wires by clicking here.
Conductor
This type of wire is a polished annealed electrolytic copper wire (99%), made with Cu-ETP. It is in fact annealed copper, that is to say relatively malleable, the properties of which must allow an elongation of up to 25%.
Varnish
The wires are covered with a layer of enamel, a coating. This enamel layer can be of different material, which will be chosen according to the maximum temperature to withstand.
Applications
Ce type de fil peut être utilisé dans divers domaines, tels que l’électronique ou le bobinage, selon le type. Quelques exemples :
Classe thermique (°C) | Classe H, 180°C |
Isolation / Email | Polyurethane |
Isolation | Couche de finition – | – |
Isolation | Couche de liaison – | – |
Gamme de production (mm) | 0.03 -1.10 mm |
Normes IEC | IEC 60317 – 51 |
Certification UL | Sur demande |
Classe Thermique (°C) | 180°C |
Choc thermique (°C) | ≥ 200°C |
Température de passage (°C) | ≥ 230°C |
Température de soudure (°C) | > 380°C |
Température de collage (°C) | Non applicable |
Température de ramollissement (°C) | Non applicable |
Résistance normale aux solvants | 3H – 4H |
Trempage Vernis Résistance | Bon |
Résistance au réfrigérant | Non applicable |
Résistance à l’huile du transformateur | Non applicable |
Caractéristiques particulières | Excellente soudabilité basses températures |
Domaines d’utilisation | Electromecanique, automotive |
To note
The enamelled conductor is therefore defined according to whether it is weldable or not, according to the temperature class and according to the number of layers of varnish.
- The temperature indices are called thermal class, and indicate the temperature at which the copper wires can operate for about 20,000 hours.
- Polyurethanes can be welded. In theory, this does not require stripping beforehand. This is because the coating layer evaporates with heat. This is called weldable. They can also be of different colors (black, purple, green, blue) but are mostly red or yellow. Note that the color has no effect on the insulating capacity of the varnish.
- Polyesterimides are brown in color. They are generally non-weldable, since they must be pickled before welding.
- Polyimides must also be pickled before welding, and are therefore considered as non-weldable.
- The grade indicates the number of enamel layers. Grades 1 and 2 are the most commonly used. The number of layers increases the insulation property of the wire. Grade 2 is therefore thicker and offers better strength than grade 1. Grade 3 is also possible.
The total diameter of the wire (nominal + with varnish) increases according to the grade. This must be taken into account, particularly concerning the installation and the conditions of use (size, contact with the environment, etc.).
You can consult here the calculations of the filling rate according to the wire diameter and the applied grade.
Characteristics
These are annealed, bare or tinned electrolytic copper wires. The wires are of chemical and electrical composition according to standard EN13602. The wires are delivered in coils of P-150 to P-250, depending on the quantities requested.
Applications
Bare or tinned copper wires can be used for a variety of electronic and electrical conductor construction applications. The wires can be used individually or combined in strands.
NOTE
The types of wires shown here are indicative. On request, we can in fact supply wires of different shapes (square, rectangular), of different diameters, and of different material (silver, etc.).
Do not hesitate to contact us for any request. Our technicians will be happy to answer you.