110kV Power Transformer
Flagship high-voltage power transformer for sub-transmission, industrial main supply, and generator step-up. OLTC, full type-tested, built to IEC 60076 / IEEE C57.
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 | 6.3–200 MVA (typical: 20/31.5/40/50/63/75/100/120/150/200) |
| Primary voltage | 110 kV (max 126 kV) |
| Secondary voltage | 10, 11, 20, 35 kV / custom |
| Frequency | 50 Hz or 60 Hz |
| Phase | 3-phase |
| Vector group | YNd11, YNd1, YNa0 (custom) |
| Impedance | 10.5% – 14% (per spec) |
| Cooling method | ONAN / ONAF / ODAF |
| Tap changer | On-load (OLTC) ±8×1.25% |
| Insulation level | LI550AC230 (110kV) / per voltage class |
| Temperature rise | 65K (oil); 65K (winding) |
| No-load loss | Per IEC 60076 / customer spec |
| Load loss | Per IEC 60076 / customer spec |
| Noise level | ≤70 dB (per IEC 60076-10) |
| Protection level | IP00 indoor; IP54 outdoor available |
| Applicable standards | IEC 60076, IEEE C57.12.00, GB/T 6451 |
| Ambient temperature | -25°C to +40°C |
| Altitude | ≤1000m (derating above) |
| Accessories | OLTC, Buchholz, pressure relay, DGA, temp gauges, surge arrester, control cubicle |
Product Advantages
Verifiable benefits — not empty claims. Here’s exactly what you get when you choose JINXING.
Full Type Test
Impulse, PD, temp-rise, sound — witnessed per IEC 60076.
48h Quote / 3–5 Day Custom
Standard quoted in 48h; custom in 3–5 working days.
OLTC + Monitoring
On-load tap changer with online DGA and temperature monitoring.
English Documentation
Spec, GA drawing, test report, manual — all English.
Material Options
Core steel, copper, oil brand — selectable per request.
Third-Party Witness
SGS/CiT/Intertek witness FAT welcome.
OEM Support
Private label and custom branding available.
Export Packing
Sea-worthy, shock-fixed for large-unit shipping.
Components and connection detailsApplications
Where this transformer is used — connecting the product to real-world industry applications.
Sub-transmission
110kV regional transmission substations.
Generator Step-up
Power plant GSU — 110kV grid connection.
Industrial Main Supply
Large industrial plants — 110kV main power supply.
City Substation
Urban distribution substations — 110/10kV.
Solar/Wind Farm
Main step-up for renewable energy plants.
Oil & Gas
Refinery and processing facility main supply.
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.