35kV Power & Distribution Transformer
Sub-transmission and industrial main supply transformer. Step-down 35kV to 10kV/0.4kV for industry, substations, and renewable collection.
Technical Parameters
Standard parameter ranges for this model. Special requirements can be assessed by our engineering team — contact us for custom specifications.
| Parameter | Standard Range |
|---|---|
| Rated capacity | 50 kVA – 31.5 MVA |
| Primary voltage | 35 kV (max 40.5 kV) |
| Secondary voltage | 0.4, 10, 11 kV / custom |
| Frequency | 50 Hz or 60 Hz |
| Phase | 3-phase |
| Vector group | Dyn11, YNd11, Yyn0 |
| Impedance | 6.0% – 10.5% (per spec) |
| Cooling method | ONAN / ONAF; oil or dry-type |
| Tap changer | Off-circuit (OCTC) ±2×2.5%; OLTC optional |
| Insulation level | LI200AC85 (35kV) |
| Temperature rise | 65K (oil); 65K (winding) |
| No-load loss | Per IEC 60076 / GB/T 6451 |
| Load loss | Per IEC 60076 / GB/T 6451 |
| Noise level | ≤55 dB (typical) |
| Protection level | IP20 indoor; IP44/IP54 outdoor |
| Applicable standards | IEC 60076, IEEE C57.12.00 |
| Ambient temperature | -25°C to +40°C |
| Altitude | ≤1000m (derating above) |
| Accessories | Buchholz, temp gauges, breather, rollers, tap changer |
Product Advantages
Verifiable benefits — not empty claims. Here’s exactly what you get when you choose JINXING.
Full Routine Test
IEC 60076-1 tests on every unit.
48h Quote
Standard products in 48h.
English Docs
Complete documentation in English.
Witness FAT
Third-party inspection welcome.
OEM Support
Private label available.
Flexible Design
Oil or dry-type, with/without OLTC.
Applications
Where this transformer is used — connecting the product to real-world industry applications.
Sub-transmission
35kV step-down to 10kV for distribution.
Industrial
Factory main supply — 35/10kV.
Solar Collection
PV plant 35kV collection grid.
Substation
Secondary substations — 35kV level.
Quality Proof — 9-Step Manufacturing Process
Every transformer passes through 9 quality-controlled stages, from raw material to shipping. Full traceability with documentation at every step.
Material Inspection
Raw material verification — core steel, copper, oil, accessories checked against certificates before production.
Core Cutting
CNC step-lap core cutting for low-loss grain-oriented silicon steel. Core loss measured before assembly.
Winding
Controlled winding tension, turn-count verification, and insulation paper application for each coil.
Assembly
Core-coil assembly with dimensional checks for fit, clearance, and clamping force.
Vacuum Drying
High-vacuum drying ovens remove moisture from insulation before oil impregnation.
Oil Filling
Filtered insulating oil with breakdown voltage >70kV/2.5mm and moisture <10ppm.
Final Testing
Full routine test per IEC 60076-1 — insulation, resistance, ratio, losses, withstand.
Packing
Sea-worthy export packing with shock-fixed crating for ocean shipping.
Shipping
On-time delivery with documentation — test reports, drawings, manuals in English.
Need a Custom Transformer Solution?
Our engineering team can assess non-standard voltage, capacity, impedance, or environmental conditions — and deliver a full proposal within 48 hours.