110kV-500kV Full-series Power Transformers

Our 110kV to 500kV transformers combine precision manufacturing, global certifications, and agile customisation to give you reliable, site-adapted power for smart grids, renewables, rail, and transmission applications.

In the workshop, JOERG shear lines hold silicon steel burrs below 0.02 mm, and we use Japanese grain-oriented high-permeability steel to keep core losses and noise low from the very first cut. High-voltage windings are wound on automatic machines; low-voltage foil windings get automatic foil winding with argon-shielded welding – that ensures low resistance and high conductivity. We also hold patents on winding processing devices and methods, which adapt to different winding sizes and even clean themselves during production.

Every transformer type has passed full type tests – including short-circuit withstand – at China’s national transformer quality supervision centre. Beyond that, we carry KEMA, CESI, ASTA, and CE certifications. So whether your market follows IEC, GOST, or ANSI, our test reports already satisfy local grid entry requirements. That saves you the usual weeks of extra paperwork, translation, and surprise re-testing fees.

We’ve got nearly 200 technical engineers on hand, ready to respond to your specific challenges. Need insulation adjustments for a high-altitude mine in South America? Wide-range tap changing for an ageing grid in Central Asia? Special oil formulations and seals for extreme cold in Russia? We’ll design it, produce multilingual documentation, and help you navigate local certification procedures – all as part of the package.

1. 110kV Power Transformer

2. 220kV Power Transformer

3. 330kV Power Transformer

4. 500kV Power Transformer