Photovoltaic Ribbon Sunwire
Sunwire® is Luvata's branded photovoltaic ribbon - possibly the softest PV ribbon available on the market today
Sunwire is a copper-based flat ribbon used to connect silicon cells electrically and to carry out current in crystalline silicon and thin-film photovoltaic modules.
Sunwire is made from oxygen-free copper core base, offering exceptional electrical conductivity combined with guaranteed elongation and yield strength. Sunwire's softness reduces cell breakages and electrical resistance in PV modules.
Smaller width
- to avoid sacrificing cell yield
- to enable 4-6 busbar cell solutions
Softer material
- to avoid causing stress in the soldering process
- to enable usage of thinner wafers
- to reduce electrical resistance
Straighter material
- to get out the full power of the module
- usable also in large thin-film applications
Tin coating on every surface
The Sunwire® Evolution - passion for improvements
The continuous advancement of our photovoltaic ribbon, branded Sunwire, begins by listening to the new challenges facing PV module manufacturers. The incremental improvements made to Sunwire stem from the need for higher productivity in module manufacturing and improved efficiency of the module. Luvata's passion for finding the answers to these new challenges - this is Sunwire’s evolution.
Sunwire® ES
With a high-purity oxygen-free copper core base, Sunwire ES offers exceptional electrical conductivity combined with guaranteed elongation and yield strength. These enhanced mechanical properties reduce cell breakage rates and improve the productivity.
Sunwire spools
Sunwire spools are getting bigger and bigger. Sunwire’s fully-automated spooling process ensure that its winding is consistent from one spool to the next, resulting in reliable and predictable de-spooling. This means less downtime and higher production output for module manufacturers.
| Crystalline silicon panels | Ongoing development of both multicrystalline and monocrystalline silicon cells requires continuous improvements in the wire. We are developing new products to meet the most stringent technological and market demands for all these applications. |
| Thin-film panels | With the growth of thin-film solar panel markets, there are new requirements for both the wire and the connections between the wire and the thin-film module. Whether it is amourphous or ‘micromorph’ (microcrystalline / amourphous) silicon. CdTe or CIGS thin-films, we can provide the right solution for the module manufacturers. |
Dimensions*
| Rolled from round wire | |
| Thickness (mm) | 0,080-0,600 (Tolerance +/- 0,007) |
| Width (mm) | 0,300-6,000 (Tolerance +/- 0,08) |
Platings (hot dipped)*
| Lead free | Sn100; SnAgCu 96,5/3,0/0,5 |
| Leaded | SnPbAg 62/36/2; SnPb 63/37; SnPb 60/40 |
| Low temperature | Bi-containing lead-free solder alloys |
| Plating composition and thickness | 4-50 μm +/- 3 μm each side |
Melting temperatures of different coating alloys
| Leaded | |
| SnPbAg 62/36/2 | 179 °C |
| SnPb 63/37 | 183 °C |
| SnPb 60/40 | 183/190 °C |
| Lead-free | |
| Sn 100 | 232 °C |
| SnAg Cu96,5/3,0/0,5 | 217/220 °C |
| Low temperature | |
| SnBiAg 60/38/2 | 139-170 °C |
Base Materials
| Cu-OF1 | CW007A | (acc. EN13602) | CDA 102 | Electrical Conductivity 101 103% IACS Resistivity ≤ 1.72 x 10-8 Ωm |
Mechanical Properties
| Available Yield Strengths | Rp0.2 <50-140 N/mm2 |
| Elongation at fracture | >25 % |
| Camber | <6 mm/m measured from the center of the spool |
Spool & disc dimensions* (mm)
| Spool type | d1 | d2 | d3 | L1 | L2 | Approx. winding volume in kg |
| 10-S | 152 | 100,5 | 16,1 | 121,5 | 101 | 5 |
| K 160 | 160 | 100 | 22 | 160 | 128 | 8 |
| HKV 160 | 160 | 90 | 22 | 160 | 85 | 8 |
| HKV 200 | 200 | 112 | 22 | 200 | 106 | 15 |
| SD 300 K | 300 | 212 | 51,5 | 103 | 91 | 15-18 |
Pre-cut*
| 65 mm - 630 mm |
*Also according to customer specifications
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Relevant industries for Photovoltaic Ribbon Sunwire
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Did you know?
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Sustainable packaging for SunwireFor Sunwire deliveries, we use re-usable packaging, which enables customers to pack the empty spools into the very same package ensuring the optimal space utilisation, low damage ratio and high re-usability of spools.