China Best Auto Transformers Manufacturer & Factory Serving the Turkey Market

For step-down or step-up voltage adaptation where galvanic isolation between primary and secondary circuits is not strictly required by electrical codes, an autotransformer is significantly more efficient and cost-effective. Because an autotransformer shares a common winding, the core mass and copper wire required are reduced by up to 45%. This delivers higher efficiency (up to 99.4%), a smaller physical footprint, lower thermal emissions, and a purchase cost up to 40% lower than a comparable two-winding isolation transformer.

Yes. All our autotransformers are manufactured under ISO 9001:2015 quality management systems and strictly adhere to international IEC 60076 / EN 60076 standards, which form the technical baseline for Turkish TSE compliance. Our units comply with TEİAŞ voltage regulation limits, short-circuit withstand tolerances, and dielectric insulation standards, ensuring smooth integration into local low-voltage and medium-voltage distribution networks.

Our transformers are engineered specifically for high ambient temperature resilience. Standard dry-type units utilize Class H insulation (rated for up to 180°C operating temperature) with standard winding temperature rise limits capped at 100°C. Oil-filled units are built with high-flashpoint mineral insulating oil adhering to IEC 60296, maintaining a conservative 65°C winding rise limit to guarantee continuous full-load operation even when ambient outdoor temperatures exceed 42°C in Southern and Central Turkey.

Absolutely. When supplying power to variable frequency drives (VFDs), servo drives, rectifiers, or UPS systems, non-linear currents generate harmonic distortion. We offer specialized K-Factor rated (K-4, K-13, K-20) autotransformers designed with electrostatic copper shielding between winding layers, oversized neutral conductors (rated for 200% phase current), and low-loss CRGO silicon steel cores to prevent overheating and voltage waveform distortion.

Standard industrial autotransformers (10KVA to 250KVA) are typically manufactured and factory-tested within 12 to 18 business days. High-capacity custom units or modular substations (such as 10MVA traction autotransformers) require 25 to 35 days. Sea freight from Ningbo, Shanghai, or Shenzhen ports to major Turkish sea ports (Ambarlı/Istanbul, Gebze, Izmit, Mersin, or Aliağa/İzmir) usually takes between 22 and 28 days via direct shipping lines. Air freight options are available for urgent spare parts or compact components.

We provide a standard 24-month comprehensive warranty from the date of commissioning or 30 months from the bill of lading date. Every unit is supplied with full engineering schematics, wiring manuals, and certified Factory Acceptance Test (FAT) reports. Our engineering team provides 24/7 remote technical assistance for installation guidance, commissioning review, and troubleshooting, backed by optional on-site engineering support for large-scale utility and railway projects.