Applications Renewable Energy
Renewable Energy
From nacelle to borewell: winding wire for renewable energy
A wind turbine, a solar farm and a solar pump have very little in common mechanically, and quite a lot in common electrically. Each one winds copper, and each one is expected to earn its keep for twenty five years outdoors. This is where our wire fits.
Wind generators
A wind turbine generator lives in a nacelle eighty metres up, where the temperature swings from freezing to sixty degrees daily and nobody visits without a crane. The stator winding is heavy gauge, Class 200 polyesterimide dual coat, and the rule is simple: the enamel must never be the reason the crane comes. Doubly-fed induction generators also wind the rotor, which sees inverter switching on the slip rings and needs the same inverter-duty wire we supply for industrial drives.
We supply SWG 8 to 16 for direct-wound stators and can support rectangular sections against a drawing, all with batch certificates for the OEM's type-test file.
Solar inverters and the magnetics inside them
A photovoltaic string inverter is mostly power electronics, but the transformer and the boost and filter chokes inside it are wound components running at tens of kilohertz. That calls for fine and medium gauge wire with a very smooth, pinhole-free enamel, because at high frequency the current runs on the surface and every defect is a loss. We supply polyesterimide Grade 1 and Grade 2 in SWG 20 to 40 for these, and litz-wire constructions through partners for the highest frequencies.
Solar water pumps
Millions of borewell pumps across India and Africa now run on solar. The motor is a wet-wound submersible unit, and the wire is our submersible polyester-wrapped copper: a conductor whose insulation is designed to sit in water for years. Solar pumps cycle on and off with the sun, so they see more starts than a grid pump; we specify the same 200 °C stable jacket and hold the overall diameter to the submersible table so slot fill is predictable across pump sizes.
Responsible sourcing
Renewable customers ask where the copper came from, and rightly. Ours is 99.99% ETP cathode bought against mill certificates from LME-registered producers. Our packaging (spools, pallets and wrap) is returnable: it comes back, is cleaned and goes out again. Process scrap is segregated and returned to the smelter. We are happy to complete supplier sustainability questionnaires and to host audits at Jeedimetla.
Key takeaways
- Wind generators: heavy-gauge Class 200 dual coat; DFIG rotors need inverter-duty wire.
- Inverter magnetics: fine-gauge, pinhole-free polyesterimide; surface quality is a loss figure at high frequency.
- Solar pumps run on our submersible wrapped wire; packaging is returnable and copper is certified cathode.
