Product Overview

Renewable energy oil-immersed transformers are engineered for solar PV, wind power, and energy storage systems, with design compliance aligned to IEC 60076. They are suitable for centralized and distributed PV plants, wind farms, energy storage stations.

The design is optimized for large load variations, frequent grid fluctuations, harsh environmental conditions, low maintenance requirements, and long service life. The transformers are built to withstand variable generation profiles, grid-side disturbances, and environmental stress while maintaining reliable electrical performance.

Stable insulation processing, precise oil filling, high-quality core manufacturing, and corrosion-resistant finishing help improve product reliability, reduce maintenance requirements, and support long operating life in renewable energy installations.

Key Benefits

Renewable-ready Design
Engineered for PV, wind, and storage applications with
frequent load and grid fluctuations.

01
Reliable Long-term Operation
Oil-immersed construction and controlled insulation
processes support stable operation and long service life.

02
High Manufacturing Consistency
Automated core processing, robotic stacking, vacuum
drying, and robotic welding improve process stability.

03
Strong Environmental Adaptability
Designed for demanding outdoor renewable energy
project environments and harsh operating conditions.

04
Low Maintenance Requirements
Robust structure, controlled oil filling, and corrosion
protection help reduce lifecycle maintenance needs.

05
Project Flexibility
Supports mineral oil and natural ester oil options, with
project-specific electrical configurations available.

06

Process Highlights

Automatic Iron Core Processing Line
High-quality silicon steel sheets are processed on digital
    shearing lines for low burr levels and precise dimensional
    accuracy.
Automatic robotic stacking improves lamination efficiency
    and supports verified reductions in no-load loss and noise.

01
Terahertz Vacuum Drying
Efficient drying improves insulation performance compared
with conventional electric heating.
The process reduces energy consumption by approximately
40% and helps extend insulation life.

02
Direct Winding on the Core
Compact winding structure improves core window
utilization and short-circuit withstand capability.
Mold-free wrapping simplifies manufacturing and
improves production efficiency.

03
Vacuum Oil Filling Technology
Vacuum oil filling minimizes residual air bubbles and helps
    maintain high oil purity in accordance with IEC 60296.
The system supports both mineral oil and natural
    ester oil, with controlled oil volume and flow to protect
    insulation integrity.

04
Robotic Welding
Dedicated robotic workstations support stable welding
quality for radiators and oil tanks.
Consistent welding helps improve appearance, efficiency,
and oil-leakage prevention.

05
C5 Anti-Corrosion Protection
The anti-corrosion system meets C5 corrosion protection
requirements defined in ISO 12944.
Primer, middle coat, and topcoat processes support
uniform coating quality and improved corrosion resistance.

06

Standards and Configuration Notes

Transformer design and short-circuit withstand capability are aligned with IEC 60076.
Silicon steel processing is referenced to IEC 60404 requirements.
Vacuum oil filling and oil purity control are aligned with IEC 60296.
Anti-corrosion protection follows ISO 12944 C5-class requirements.
Voltage combination, tapping range, connection symbol, short-circuit impedance, and additional project-specific ratings are available upon request.

Applications

Centralized and distributed PV plants
Wind farms and renewable energy bases
Energy storage stations
Integrated source-grid-load-storage projects
Renewable power projects requiring robust step-up transformation

Technical Specifications

Rated Capacity (kVA)	Peak Efficiency Index (Tier 2)	No-Load Current (%)	Weight (kg)		Overall Dimension (mm) L×W×H	Connection Symbol	Short-Circuit Impedance (%)	Voltage Combination and Tapping Range
Rated Capacity (kVA)	Peak Efficiency Index (Tier 2)	No-Load Current (%)	Oil	Total	Overall Dimension (mm) L×W×H	Connection Symbol	Short-Circuit Impedance (%)	HV (kV)	HV Tapping Range (%)	LV (kV)
1000	99.484%	0.52	1350	5500	2020×1680×1950	Dyn11/Dd0	6.5 7	38.5 37 36.75 35	±2×2.5	0.8
1500	99.492%	0.48	1370	5760	2100×1750×1980
2000	99.502%	0.48	1420	6630	2200×1980×2080
2500	99.514%	0.44	1760	8050	2290×2020×2250
3000	99.517%	0.35	2000	9920	2480×2200×2420
3300	99.532%	0.35	2060	9980	2500×2200×2450
4000	99.532%	0.30	2570	10120	2550×2200×2480
6600	99.575%	0.29	2880	11810	2950×2220×2560	Dyn11/Y11	6~11	0.8~0.8 1~1
8000	99.602%	0.29	3550	14920	3400×2220×2650
9000	99.604%	0.28	3670	16270	3450×2220×2650
10000	99.615%	0.28	4210	18560	4000×2230×2650