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Reflecting Reliability
The cells are electrically connected using tinned copper ribbon known as PV Interconnect Ribbon, Tabbing Strip, Tabbing Ribbon, Stringing Ribbon. Tabbing ribbons are commonly applied as parallel strips that weave from the top of one cell to the bottom of the next to connect the positive and negative sides of the cells in series. The ribbon is soldered onto the paste that was applied to the TCO. The tabbing application creates a cluster of solar cells. The tabbing ribbon collects electric current within its cluster of solar cells and delivers it to the bus ribbon.
Other commonly used names for the PV Interconnect Ribbon are
Flat wire, Ribbon, String Wire, Photovoltaic Wire, PV Wire, Interconnecting tab, PV Copper Ribbon, Solar cell interconnect tabbing, Flattened copper wire, Solder plated copper ribbon, Tabbing Strip, Tabbing Ribbon , Stringing Ribbon.
| PARAMETERS | VALUE | TOLERANCE |
|---|---|---|
| Width | 1.00 mm to 4.00 mm | ± 0.1 mm |
| Thickness | 0.10 mm to 0.25mm | ± 10 % |
| Resistivity | 1.7241-1.70µΩ/ cm | IACS * — International Annealed Copper Standard |
| Yield Strength | < 100 N/mm2 | |
| Tensile Strength | < 250 N/mm2 | |
| Elongation | Between 20% and 37 % | Semi Soft< 25 % Soft < 32 % Supper Soft < 38 % |
| Camber | < 6 mm / 1000 mm | |
| Coating Type | Various Solder Types as per customer requirement Type | Thickness of coating can vary from .010mm to 0.050 mm |
| Packing type | Pulp Reel, Plastic Spools, Cut To Length | Packing Options and Sizes |
| Application | Solar Cells / Module , Contacts , Electronic Repair Kits |
| LEAD BASED SOLDERS | ||||
|---|---|---|---|---|
| ALLOY COMPOSITION | SOLIDUS | LIQUIDUS | ||
| Sn | Pb | Ag | °C | °C |
| 60 | 40 | – | 183 | 191 |
| 62 | 36 | 2 | 179 | 179 |
| ALLOY COMPOSITION | SOLIDUS | LIQUIDUS | ||||
|---|---|---|---|---|---|---|
| Sn | Pb | Ab | Bi | Cu | °C | °C |
| 95.5 | – | 3.8 | – | 0.7 | – | MP217 |
| 96 | – | 2.5 | 1 | 0.5 | – | MP222 |
| 96.5 | – | 3.5 | – | – | 221 | 221 |
| 99.3 | – | – | – | 0.7 | 227 | 227 |
| 100 | – | – | – | – | – | MP232 |
Other variants available on request
| S.NO | TYPE | D1 | D2 | L1 | L2 | D3 |
|---|---|---|---|---|---|---|
| 1 | Plastic | 152 | 90 | 110 | 90 | 22,36 |
| 2 | Plastic | 160 | 100 | 160 | 128 | 22 |
| 3 | Plastic | 200 | 125 | 200 | 160 | 22,36 |
| 4 | Plastic | 55 | 224 | 200 | 160 | 36 |
| 5 | Pulp | 356 | 101.4 | 12 | 5.2 | 22 |
Cut to length option is also available for busbar for direct use.
Electrical Resistivity (Resistivity, specific electrical resistance, or volume Resistivity) is a measure of how strongly a material opposes the flow of electric current. A low resistivity indicates a material that readily allows the movement of electric charge.
Copper is one of the most useful metals known to man, and it was one of the first to be utilized. It has the second best electrical c onductivity of the metals, second only to silver compared to which it has a conductivity of 97%
Solder is a fusible metal alloy used to join together metal
| LEAD BASED SOLDERS | ||||
|---|---|---|---|---|
| ALLOY COMPOSITION | SOLIDUS | LIQUIDUS | ||
| Sn | Pb | Ag | °C | °C |
| 60 | 40 | – | 183 | 191 |
| 62 | 36 | 2 | 179 | 179 |
| LEAD FREE SOLDERS | ||||||
|---|---|---|---|---|---|---|
| ALLOY COMPOSITION | SOLIDUS | LIQUIDUS | ||||
| Sn | Pb | Ab | Bi | Cu | °C | °C |
| 95.5 | – | 3.8 | – | 0.7 | – | MP217 |
| 96 | – | 2.5 | 1 | 0.5 | – | MP222 |
| 96.5 | – | 3.5 | – | – | 221 | 221 |
| 99.3 | – | – | – | 0.7 | 227 | 227 |
| 100 | – | – | – | – | – | MP232 |
The solders are available on customer request.
All solder coating come with a spectrometer test certificate ensuring the correct proportions and uniform coating quality.
The Spools and Reels are wound using state of the art automated systems giving a level and uniform winding to the finished ribbon for easy and hassle free unwinding.
Computerized System are used to measure the mechanical properties of the Interconnect ribbon and Photovoltaic Busbar material supplied has properties as follows
Tensile Strenght < 250 N/mm2
Yield Strenght < 140 N N/mm2
Address: Sy No. 192, 195, 196, 199, Kucharam(V), Toopran(M), Medak(D) – 502 336, Telangana, India
Branch: Surat, Jaipur, Delhi, Singapore
Mobile No: +91 98298 99955
Email: lavi@muthametal.com
