Jiangsu Huachen Transformer Co.,Ltd.
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The S18/S20/S22 series new energy Hua-type transformer is a core power distribution device tailor-made for wind and photovoltaic new energy generation scenarios. This equipment adopts a three-phase double-winding oil-immersed, self-cooling, off-circuit tap-changer, fully sealed structure, serving as the critical core component of Hua-type compact substations. It consists of a transformer body, oil tank, radiator, high and low voltage side insulating bushings, oil level gauge, pressure release valve, temperature controller, oil conservator (required for capacity ≥630kVA), gas relay, and dehydrating breather. Paired with high-voltage and low-voltage electrical components and enclosure, it forms a complete Hua-type compact substation. This oil-immersed Hua-type transformer for new energy covers a wide capacity range, with a voltage grade up to 40.5kV and below, fully adapting to complex operating conditions of new energy projects.
The new energy Hua-type transformer features a reinforced winding structure, withstanding frequent power fluctuation impacts of wind and photovoltaic systems to ensure stable output under intermittent generation conditions. Its fully sealed structure isolates internal insulation oil from external air and moisture, greatly extending the service life of insulation materials.
As the core of Hua-type compact substations, this transformer achieves high integration with switchgear, reducing equipment floor space by over 40% compared with conventional split solutions, significantly cutting civil construction costs for new energy power stations.
Equipped with a complete safety protection system including pressure release valve, gas relay and temperature monitoring module, it realizes real-time fault monitoring and rapid protection response, effectively avoiding equipment damage from overload and short circuit, and improving continuous operation stability of new energy projects.
Parameter Category | Core Technical Index |
|---|---|
Series Model | S18, S20, S22 |
Rated Capacity Range | 30kVA - 2500kVA |
Rated Voltage Grade | Up to 40.5kV and below |
Phase Structure | Three-phase double-winding |
Cooling Method | Natural air cooling (ONAN) |
Voltage Regulation Mode | Off-circuit tap-changer |
Sealing Structure | Fully sealed oil-immersed structure |
Standard Components | Insulating bushings, oil level gauge, pressure release valve, temperature controller |
Optional Components | Oil conservator, gas relay, dehydrating breather (for capacity ≥630kVA) |
Product Model | Rated Capacity (kVA) | Vector Group | High Voltage (kV) | Tapping Range | Low Voltage (kV) | Core & Winding Weight (kg) | Oil Weight (kg) | Total Weight (kg) | Short-Circuit Impedance (%) |
|---|---|---|---|---|---|---|---|---|---|
S11-3900 | 3900 | Dy11 | 37 | ±2×2.5% | 0.8 | 3860 | 2100 | 8580 | 8.0 |
S11-6900 | 6900 | Dyn11 | 37 | ±2×2.5% | 1.14 | 5870 | 2540 | 12125 | 8.0 |
S13-1600 | 1600 | Dy11 | 37 | ±2×2.5% | 0.8 | 2225 | 1210 | 5050 | 6.5 |
S13-3125 | 3125 | Dy11 | 37 | ±2×2.5% | 0.8 | 3265 | 1450 | 6950 | 6.5 |
S18-3300 | 3300 | Dy11 | 37 | ±2×2.5% | 0.8 | 3385 | 1410 | 6950 | 7.0 |
S18-3200 | 3200 | Yd11 | 37 | ±2×2.5% | 0.8 | 3380 | 1650 | 7300 | 7.0 |
S20-3150 | 3150 | Dy11 | 37 | ±2×2.5% | 0.8 | 3265 | 1450 | 6950 | 6.5 |
S22-3000 | 3000 | Dy11 | 10.5 | ±2×2.5% | 0.8 | 3000 | 1250 | 6450 | 5.5 |
This Hua-type transformer for wind and solar power is widely used in on-grid/off-grid wind power stations, utility-scale and distributed photovoltaic power plants, industrial and commercial park new energy distributed generation projects, remote area new energy micro-grid systems, and rural new energy power supply renovation projects.
We support customized adjustment of rated capacity, voltage grade and tap range to match regional grid connection standards. Optional configurations include intelligent temperature monitoring systems, remote communication modules, high-performance lightning protection components, and corrosion-resistant coatings for high-altitude, high-humidity and saline-alkali harsh environments. We also customize installation size and interface position to match your Hua-type compact substation enclosure design, realizing seamless integration with electrical components.
All new energy Hua-type transformers are manufactured in strict accordance with national and international power transformer standards, with 100% full-item factory testing to ensure compliance with design requirements. We provide full life cycle technical support, including pre-sales scheme design, on-site installation guidance, commissioning support, regular maintenance and 24/7 after-sales fault response, to ensure long-term stable operation of your power distribution system.
The Hua-type transformer is a special core component for Hua-type compact substations, with a highly integrated structure that can directly match high and low voltage switchgear to form a complete prefabricated substation. Compared with conventional products, it has a more compact footprint, higher integration, and better adaptability to the rapid installation needs of new energy projects.
Our S18/S20/S22 series new energy Hua-type transformer supports a maximum voltage grade of 40.5kV and below, with a capacity range of 30kVA to 2500kVA, fully meeting the power distribution needs of most wind power, photovoltaic and other new energy generation projects.
