Solar Step-up Transformer
Multi-winding, harmonic-tolerant step-up transformer matched to PV inverters. Designed for solar power plant inverter-to-grid step-up applications.
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 | 100–3150 kVA |
| Primary voltage (LV) | 0.4 / 0.69 / 0.8 kV (inverter output) |
| Secondary voltage (HV) | 10, 20, 35 kV (collection grid) |
| Frequency | 50 Hz or 60 Hz |
| Phase | 3-phase |
| Vector group | Dyn11, Dyn5 (custom for multi-winding) |
| Impedance | 4.0% – 6.0% (K-factor adjusted) |
| Cooling method | ONAN / ONAF |
| Tap changer | Off-circuit (OCTC) ±2×2.5% |
| Insulation level | LI75AC35 / LI95AC50 |
| Temperature rise | 65K (oil); 65K (winding) |
| No-load loss | Per IEC 60076 (low-loss design) |
| Load loss | Per IEC 60076 (K-factor adjusted) |
| Noise level | ≤55 dB |
| Protection level | IP54 (outdoor standard); IP65 available |
| Applicable standards | IEC 60076, IEEE 1547, IEEE C57.12.00 |
| Ambient temperature | -25°C to +50°C (derating above 40°C) |
| Altitude | ≤1000m (up to 4000m with derating) |
| Accessories | Temp gauges, Buchholz, pressure relief, breather, IP54 enclosure |
Product Advantages
Verifiable benefits — not empty claims. Here’s exactly what you get when you choose JINXING.
Inverter-Matched
Multi-winding design for 1–4 MPPT/inverter inputs — reduces transformer count.
Harmonic-Tolerant
K-factor rated (K-4 to K-20), eddy-current loss controlled for THDi up to 30%.
Desert-Ready
IP54 outdoor, sand/dust resistant, UV-resistant enclosure.
High Altitude
Designs available up to 4000m with derating.
Full Routine Test
IEC 60076-1 + harmonic loss verification.
English Docs
Complete documentation including harmonic analysis.
Applications
Where this transformer is used — connecting the product to real-world industry applications.
Utility Solar
1–500 MW utility-scale PV plant inverter step-up.
Distributed Solar
Commercial rooftop and distributed PV systems.
Solar + Storage
Hybrid solar + battery storage step-up transformers.
Collection Grid
10/20/35kV collection grid for PV farms.
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.