Jiangsu Huachen Transformer Co.,Ltd.
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Our 35kV power transformer is a cutting-edge power distribution solution engineered with advanced design concepts, featuring comprehensive upgrades in material selection, structural optimization, and manufacturing processes. This 35kV class power transformer adopts a robust frame structure with high and low voltage clamps tightened by steel tension bands, top beams and side beams, which greatly enhances core clamping force and resistance to transportation impact. Our SZ13-20000/35 transformer prototype has passed the sudden short-circuit test by the National Transformer Testing Center in one go, verifying its exceptional short-circuit withstand capability. Longitudinal oil ducts in the high and low voltage windings effectively improve heat dissipation, significantly reducing the copper-oil temperature difference and the hottest spot temperature rise inside windings. With reliable operation, low loss, low noise and aesthetic appearance, this series reaches the advanced level of similar products worldwide.
The reinforced frame structure and precision winding design grant our low loss 35kV distribution transformer exceptional short-circuit resistance, validated by authoritative national sudden short-circuit tests, minimizing downtime and safety risks in grid operation.
Optimized electromagnetic design greatly reduces no-load and load losses, cutting long-term operation costs for utility operators and industrial users. Advanced noise reduction technology keeps operational noise at an ultra-low level, compliant with strict environmental requirements.
Dedicated longitudinal oil ducts in windings enhance oil circulation and heat dissipation efficiency, effectively reducing winding hot spot temperature rise, extending insulation service life, and ensuring long-term stable full-load operation.
The integrated rigid frame structure improves the overall mechanical strength of the 35kV oil-immersed power transformer, ensuring excellent impact resistance during transportation and installation, adapting to complex and harsh working environments.
Model | Rated Capacity (kVA) | HV Voltage Level (kV) | LV Voltage Level (kV) | No-Load Loss (W) | Load Loss (W) | Short-Circuit Impedance (%) | No-Load Current (%) |
|---|---|---|---|---|---|---|---|
SZ13-20000/35 | 20000 | 35 | 10.5 | 18500 | 85000 | 8.0 | 0.6 |
S13-10000/35 | 10000 | 35 | 6.3 | 10500 | 52000 | 7.5 | 0.7 |
S11-5000/35 | 5000 | 35 | 10.5 | 5800 | 31000 | 7.0 | 0.8 |
This 35kV power transformer is widely used in:
Urban and rural 35kV power distribution networks
Industrial parks and medium-scale manufacturing facilities
Medium-scale solar and wind power grid integration projects
Commercial complexes and high-rise buildings
Mining and metallurgy auxiliary power systems
Railway and airport infrastructure projects
We offer flexible customization to meet diverse project requirements:
Tap changer options: on-load tap changer or off-circuit tap changer
Tap range: ±2×2.5% to ±8×1.25% adjustable
Cooling methods: ONAN, ONAF customizable
Winding material: copper or aluminum winding options
Protection devices: temperature monitoring, pressure relief, gas relay configurations
Smart monitoring modules for remote operation and maintenance
All our 35kV class power transformers are manufactured in strict accordance with national and international standards, with each unit undergoing rigorous type tests and factory tests before delivery. We provide comprehensive after-sales support, including professional technical consultation, on-site installation and commissioning guidance, regular maintenance training, and 24/7 responsive after-sales service. For inquiry and quotation, contact us via hotline or email at any time.
Under normal operation and standard maintenance, our 35kV oil-immersed power transformer has a design service life of over 30 years, with stable insulation performance and operational reliability throughout the life cycle.
Yes. Our SZ13-20000/35 prototype passed the national authoritative sudden short-circuit test in one go, and all series products are designed to meet strict short-circuit withstand requirements.
Absolutely. We provide targeted customization for high altitude, high humidity, corrosive and other harsh environments, including anti-corrosion coating, enhanced insulation and sealed structure optimization.
