We're shiping the 6300kVA copper-wound units right now, and this three-phase 35kV transformer handles the kind of loads that make substations run smoothly—load loss sits at 35060W with a no-load loss of 5250W, so it isn't wasting much power when it's just humming along.

The core is a U-shaped core-type design, oil-immersed with a cooling method that can switch between self-cooling, air cooling, or forced oil circulation depending on how hot things get in your setup, and the vector group is Yd11 which is pretty standard for distribution work. Short circuit impedance is 8.0%, no-load current is 0.48%, and it meet IEC 60076—so if you're feeding a plant or a substation, it'll take the hit.

Basically, don't use this for low-frequency stuff—it's high frequency, so it's better suited to power generation, substations, or heavy industrial systems than a small workshop line. You'll want to check your insulation level matches the 35kV rating, obviously, and the copper conductors are teh main reason we see less heat buildup compared to alumnum-wound alternatives.

We usually have these built to order, with an MOQ of one unit—but lead time can be 20 days or so depending on the batch. The winding is two-winding type, and the certificate is ISO9001, though we always include a COA with each transformer for traceability.

Also, the 6300kVA capacity is a lot for a distribution rig—most buyers in our experience go with this for main substations rather than downstream feeders. Ordering is straightforward; just confirm your votage taps and vector group requirement, and we'll quote weight and crate dimensions specifically.
That 5250W is the power the transformer consumes just by being energized, even when it's not supplying any load. Over a year, it adds up to about 46,000 kWh, so lower no-load loss directly cuts your standby energy costs.
Yes, we can adjust the vector group to match your system requirements, like Yyn0 or Dyn11. Just let us know your needed phase shift and grounding setup when you order.
Our standard MOQ is 1 unit for this model, given it's a high-capacity industrial transformer. If you're looking at a larger project, we can discuss volume discounts on 5+ units.
Absolutely, each transformer comes with a full test report per IEC 60076, including no-load and load loss measurements, plus ISO9001 certification. We can also arrange third-party inspection if your contract requires it.
We vacuum-seal the transformer in a nitrogen-filled bag inside a steel crate to prevent oxidation. The silica gel desiccant breather is also sealed, and we wrap the whole unit in waterproof tarpaulin for ocean transit.