REQUEST ADVICE
This product range contains several solutions that are suitable for your motor.
We can help you choose the best component for your requirements. Contact us for a free consultation.
Miotti for Huber&Suhner
Miotti has been a partner of Huber+Suhner for 40 years and today it is its Distribution HUB for the Coil Winding sector.
International logistics management, fast delivery times and conformity with the highest standards: these are some of Miotti’s guarantees.
Read about the benefits of relying on a Global Distribution Hub.
- A large stock available and ready for delivery
- Various sections available
- Large selection of colours
- Technical support for special applications
- Standard (RADOX® 155, UL3289, UL3266 and UL3680) and special versions
Become a partner, get exclusive global cables and dedicated services.
Discover all the spool sizes available and contact us to find out more about the different cable lengths we can provide for the various types of cable. Being a Global Distribution Hub, we have a large inventory available and can offer you a purchasing experience that meets all your needs in a very short time.
RADOX® cables for coil winding applications
The ease with which they can be processed, their mechanical strength and their incredible ability to withstand temperature spikes, which are well above their temperature class (up to 250°C in the case of RADOX® 155 and RADOX® UL 3289), ranks RADOX® cables among the best-sellers in the electrical winding industry.
They also have a small outside diameter, high soldering resistance, and a high current capacity.
The most commonly used types are RADOX® 155, RADOX® UL 3266, RADOX® UL 3289 and RADOX® UL 3680.
In certification body specifications (e.g. UL, CSA etc.) they are indicated as XLPE or XLPO cables in order to classify them according to the chemical composition of the polyethylene and their cross-linking characteristics.
Discover the range:
- RADOX 125
- RADOX 155
- RADOX UL 3266
- RADOX UL 3289
- RADOX UL 3680
Discover the range:
Radox® Winding Cables: Compare Features
| Cable | Thermal Class | Rated Voltage | UL Approval | Oil Resistance | Gasoline Resistance | Halogen Free |
|---|---|---|---|---|---|---|
| RADOX 125 | Class B (125°C) | 300 V | No | No | No | Yes |
| RADOX UL 3266 | Class B (125°C) | 300 V | Yes (XLPE 125) | No | No | No |
| RADOX 155 | Class F (155°C) | 600 V | No | No | No | No |
| RADOX UL 3289/30097 | Class F (155°C) | 750 V | Yes (XLPE 150) | No | No | No |
| RADOX UL 3680 | Class F (155°C) | 600 V | Yes (XLPE 150) | Yes | Yes | No |
Single Core Cables for Power and Signal Transmission in Coil Winding Applications
RADOX®: a family of flexible single core cables offering excellent resistance to heat, hot pressure and aging.
The electronically crosslinked insulation offers high mechanical ruggedness. It will not melt and is resistant to most media as well as insulating varnishes and impregnating resins.
Brief exposure to heat up to +280°C will not have any lasting effect.
The Insulation of Radox® Wires is Cross-linked by Irradiation
This complicated process guarantees:
- very good resistance to high temperatures
- excellent resistance to abrasion
- the insulation does not melt
- good mechanical and insulation properties even up to 250°C.
- behavior similar to thermo-shrinking tubes so small deformations caused by machining can be restored with just heat.
- resistance to most products, e.g. insulating varnishes and impregnating resins
Result
Once cross-linked, the material will no longer melt, even at high temperatures.
In addition, the presence of simple adhesion forces coupled with carbon double-bonds means the material acts similarly to heat-shrinking tubes: because of these properties, the compression/traction marks left after procesing are eliminated as soon as the material is heated.
That’s why RADOX® cables are the best for Electric Machinery – their unique features are the result of a highly technological production process that guarantees unbeatable performance!
How does the irradiation cross-linking process work?
From vulcanization to cross-linking
The cross-linking of synthetic materials is similar to the vulcanization of rubber. In its natural state, rubber is thermoplastic, but Good Year discovered that by adding sulphur and exposing it to a temperature of 150°C for a few minutes made it hard and elastic.
The same result can also be obtained in synthetic materials, through cross-linking.
This can be achieved:
- by using catalysts, temperature and pressure
- by electron beam irradiation (beta or gamma ray)
Electron beam cross-linking
Thermoplastic materials are composed of long, thin, randomly arranged molecules.
The strength of these materials depends on:
- The distance between molecules
- The bonds between the molecular chains
- The crystal structure of the molecules
- The force of attraction between the molecules (in the case of polar materials)
- In a non-cross linked thermoplastic material, the polymer chains resemble a plate of spaghetti: the adhesion between one strand and another is the only force that holds them together.
As soon as the material is heated, this weak bond is broken and the molecules are free to slide past each other, causing the material to melt (similar to adding oil to a plate of spaghetti).
When the material cools, the bonds re-form, producing a new structure.
The irradiation process can be used to modify the crystal structure of the polymer chains and transform the thermoplastic material into an elastomeric material. In addition, the material will no longer melt.
The images show the cross-linking process for polyethylene: two adjacent molecular chains are bombarded with electrons, which break some of the C-H bonds, releasing hydrogen atoms.
The free carbon atoms bind with double bonds to other carbon atoms of adjacent chains, building a very strong and stable cross-linked structure.
Treccia semiconcentrica
Semiconcentric strand
RADOX® wires have a semiconcentric strand.
This solution offers many advantages in comparison to the cheaper bunched stranding chosen by our competitors as:
- wires easier to strip
- better insulation (breakthrough voltage)
- constant shape of outer layer
- easier set-up of cut/trip machines
REQUEST ADVICE
This product range contains several solutions that are suitable for your motor.
We can help you choose the best component for your requirements. Contact us for a free consultation.