Established in 1994 in Pune, Maharashtra, India, Torotrans operates a modern 3,500 sq.ft. ISO 9001:2015 certified production facility. As a premier manufacturer, supplier, and global exporter, we specialize in high-efficiency Toroidal Power Transformers (15VA to 5KVA) and high-accuracy Low-Tension Toroidal Current Transformers (tape-insulated and resin-cast options). Our engineering workflow integrates advanced automated winding machinery, stringent thermal management, and comprehensive ERDA-certified type testing to meet rigorous global industrial standards.
Watch our automated core winding, precision copper distribution, resin casting, and multi-stage testing in action inside our specialized facility in Pune.
We utilize high-grade Cold-Rolled Grain-Oriented (CRGO) silicon steel cores. Continuous tape slit cores are wound under tension and subjected to controlled thermal annealing in protective atmospheres to eliminate mechanical stresses and achieve ultra-low core losses with high magnetic permeability.
State-of-the-art automatic toroidal winding machines uniformly distribute high-purity electrolytic copper wire around the core circumference. This ensures optimal copper packing density, exceptionally low stray magnetic flux leakage, and quiet, hum-free transformer operation.
Transformers undergo rigorous layer-to-layer and primary-to-secondary insulation using high-temperature polyester films, Mylar tape, or vacuum resin encapsulation. For high-humidity and harsh industrial environments, epoxy resin casting is applied to secure structural integrity and superior dielectric breakdown resistance.
Every unit manufactured undergoes 100% routine electrical tests in accordance with IEC and IS standards. Testing includes turns ratio accuracy, polarity verification, excitation current measurement, insulation resistance testing, high-voltage withstand tests, and temperature rise verification.
To serve our international buyers across North America, Europe, the Middle East, and Southeast Asia, finished transformers are sealed in moisture-proof anti-static wraps, shock-absorbent cushioning, and heavy-duty export corrugated cartons to prevent any transit damage.
Torotrans transformers are backed by ISO 9001:2015 certification and independent ERDA Type Test Reports, ensuring top-tier performance for critical industrial control panels, switchgear, audio amplifiers, medical instruments, and renewable energy systems.
Validated by the Electrical Research & Development Association for short-circuit withstand, dielectric insulation, and thermal limits.
Tailored mechanical dimensions, custom mounting hardware, custom dual primaries/secondaries, and thermal protection cutouts.
Tight core geometry and precision winding eliminate mechanical humming, making our transformers ideal for noise-sensitive applications.
Connect directly with our engineering team to review your electrical specifications, custom dimensions, or bulk export procurement requirements.
