120V to 240V single-phase Toroidal Autotransformer

I. Core Conductors & Winding Technology

UL-Certified Full Copper Windings

Built with UL-certified American-grade copper conductors, the windings are tin-plated for enhanced oxidation resistance and high-temperature durability. This ensures long-term stable operation with excellent electrical performance.

QZ-2 Industrial-Grade Enamelled Wire

The transformer uses dual-layer insulated, enamelled copper wire with high mechanical strength and superior dielectric performance, delivering:

• Low energy loss

• High conversion efficiency

• Strong operational stability

II. Core & Electromagnetic Performance

High-Flux Cold-Rolled Silicon Steel Core

Precision-stacked silicon steel laminations with extremely tight gaps ensure:

• Low operating noise

• Minimal electromagnetic interference

• High energy conversion efficiency

• Stable magnetic performance under continuous load

III. Insulation & Safety Protection

DuPont PET Insulation Film (USA Standard)

High-performance polymer PET insulation material with temperature resistance up to 130°C, providing:

• Excellent dielectric strength

• Stable thermal performance

• Reliable inter-layer insulation protection

Dual-Layer Reinforced Insulation Design

The transformer adopts a dual-insulation structure combining:

• Double-layer enamelled winding insulation

• Polyester film barrier between primary and secondary

This significantly improves the safety margin and dielectric strength for secure operation in demanding environments.

IV. Protection Functions & Operational Reliability

Built-in Self-Resetting Thermal Protection System

The transformer is equipped with an integrated temperature protection device that automatically shuts down the system in case of overheating.

Additional protections include:

• Overload protection

• Overcurrent protection

These safety features effectively prevent equipment damage and significantly extend service life, ensuring reliable long-term performance in industrial and commercial applications.

Key Advantages Summary

✔ UL-certified full copper windings for stable performance
✔ High-efficiency toroidal design with low noise operation
✔ High-grade silicon steel core for superior energy conversion
✔ Dual-layer insulation system for enhanced electrical safety
✔ Built-in thermal and electrical protection system
✔ Reliable 120V to 240V voltage conversion for global applications