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Engineered for industrial managers, technical directors, and procurement teams who demand maximum efficiency, proven reliability, and on‑time delivery.
Get a Free Quote in 24 h| Parameter | Typical Value | Custom Range |
|---|---|---|
| Power Rating | 500 W – 10 kW | 300 W – 15 kW |
| Primary Voltage | 120 V / 240 V | 90 V – 480 V (custom) |
| Frequency | 50 Hz / 60 Hz | 45 Hz – 65 Hz |
| Efficiency | ≥ 99.5 % | ≥ 99.9 % (premium core) |
| Noise Level | ≤ 38 dB(A) | ≤ 35 dB(A) (optional) |
| Operating Temp. | ‑40 °C – 85 °C | ‑55 °C – 105 °C (special coating) |
Industrial Automation: A U.S. robotics plant replaced 12‑inch E‑core units with our 2 kW toroidal models, cutting annual electricity cost by USD 45,000 and reducing downtime by 18 %.
Medical Imaging: A hospital’s MRI power supply upgraded to a custom 3 kW toroidal transformer, achieving ISO 13485 compliance and meeting the ≤ 30 dB noise requirement.
New‑Energy Inverters: A solar‑farm integrator sourced 5 kW units for inverter banks, gaining a 12 % boost in overall system efficiency.
“Switching to Xinchangda’s toroidal transformers cut our power loss by 11 % and delivered on a 2‑week schedule, far quicker than any Chinese competitor.” – James L., Procurement Manager, Global Automation Inc.
Certificates & Compliance: CE, FCC, RoHS, VDE, CB, ISO 9001, ISO 13485, GS, SAA.
Standard models are stocked and ship within 7 days. Custom OEM projects typically require 3–4 weeks after design approval, thanks to our 14 fully automated lines.
Yes. We offer ±5 % voltage tolerance, IEC 60384‑14 insulation, and optional UL‑certified enclosures for high‑risk environments.
We provide FOB Shenzhen, CIF Los Angeles, and DDP options. For orders > 5 000 units we can arrange rail‑to‑port consolidation to reduce freight by up to 12 %.
Our 24/7 technical hotline and on‑site engineering team provide troubleshooting, firmware updates for smart transformers, and a 12‑month warranty.
Absolutely. We ship a fully functional 500 W sample at no cost; if it doesn’t meet your specs, you pay only for shipping.

Limited‑Time Offer: Place an order before 30 June 2026 and receive a 5 % discount plus free expedited shipping for the first 20 units.
Risk‑Free Guarantee: Try a sample; if performance is unsatisfactory, we’ll refund the sample cost.
Emily R., Operations Manager, SolarTech USA
"The 5 kW toroidal units arrived in 10 days, performed exactly as specified, and helped us hit our 2026 efficiency target three months early."
Michael T., Senior Engineer, MedEquip Corp.
"Xinchangda’s low‑noise design met our strict hospital standards without extra shielding—saving us $12k on enclosure costs."
Laura K., Procurement Lead, Global Automation Inc.
"Transparent pricing, ISO‑9001 quality, and a responsive engineering team—no surprises, just results."
Dr. Alex Wei, Ph.D.
Senior Magnetics Engineer with 18 years of experience designing high‑efficiency transformers for the aerospace, medical, and renewable‑energy sectors. Holds patents on low‑loss core geometry and has authored 12 IEEE papers. Leads Xinchangda’s R&D team that delivers over 70 000 units monthly.
Contact: grace01@xinchangdadz.com | Phone: +86 131 2825 6415