800-31500KVA/35KV Oil Filled Transformer
Delivery Time: 2017
Country: Turkey
Application Scenario: Electrified railway power supply system requiring support for frequent start-stop loads.
Brief Advantages: Special overload capability design (150% load for 2 hours), passed electromagnetic compatibility testing
Have questions? GNEE sales representatives are available for live chat now
Send E-mail: sales@gneeelectric.com
Tel: +8615824687445
Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of 800-31500kva/35kv oil filled transformer in China. If you're going to buy customized 800-31500kva/35kv oil filled transformer made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.
Manufacturing Technology and Process of Oil Filled transformer
• Premium Material Selection
The oil-immersed power transformer utilizes imported high-grade silicon steel sheets (B30P130) for its core, increasing magnetic permeability by 18%.
Transformer windings are made of oxygen-free copper conductors (TMY-1), reducing resistivity by 5%.
• Production Process
Winding & Varnishing: Vacuum Pressure Impregnation (VPI) process enhances coil insulation strength.
Assembly & Sealing: Laser-welded tank seams ensure 100% airtightness for oil immersion.
Factory Testing: Full-voltage partial discharge tests, lightning impulse tests, and temperature rise tests with traceable data archives.
• Eco-Friendly Innovations
Eco-friendly DFA transformer oil replaces traditional PCB oil, complying with ROHS and REACH standards.
Products parameter
| High Voltage:35(33,38.5)KV Connection Symbol:Yd11 or YNd11 Rated Frequency:50Hz/60Hz Low Voltage:10(3.15,6.3,10.5,11)KV Tapping Range of HV:±2x2.5% Insulation Level:LI200 AC85/LI75 AC35 |
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| Rated power (KVA) |
Short-Circuit Impedance(%) | S22 (KW) | S20 (KW) | S11/S13/18 (KW) | No-Load Current (%) |
Sound pressure dB(A) |
Weight (kg) |
Overall Dimension(mm) | |||||
| No-Load Loss | On-Load Loss | No-Load Loss | On-Load Loss | No-Load Loss | On-Load Loss | L | W | H | |||||
| 800 | 6.5 | 0.57 | 6.8 | 0.64 | 6.8 | 0.72 | 8.6 | 0.80 | 62 | 4000 | 2150 | 1380 | 2420 |
| 1000 | 0.67 | 8.4 | 0.75 | 8.4 | 0.84 | 10.5 | 0.70 | 62 | 4500 | 2210 | 1480 | 2500 | |
| 1250 | 0.82 | 10.1 | 0.92 | 10.1 | 1.02 | 12.6 | 0.60 | 65 | 4900 | 2470 | 1550 | 2600 | |
| 1600 | 0.99 | 12.1 | 1.11 | 12.1 | 1.23 | 15.1 | 0.50 | 65 | 6000 | 2600 | 1620 | 2700 | |
| 2000 | 1.27 | 13.3 | 1.43 | 13.3 | 1.59 | 16.6 | 0.50 | 65 | 6600 | 2780 | 1850 | 2790 | |
| 2500 | 1.49 | 14.6 | 1.68 | 14.6 | 1.86 | 17.8 | 0.50 | 67 | 7600 | 2830 | 2000 | 2860 | |
| 3150 | 7.0 | 1.55 | 18.8 | 1.82 | 18.8 | 2.18 | 19.9 | 0.45 | 70 | 8400 | 2890 | 2340 | 3130 |
| 4000 | 1.82 | 22.4 | 2.09 | 22.4 | 2.64 | 23.5 | 0.45 | 72 | 9600 | 2950 | 2780 | 3210 | |
| 5000 | 2.18 | 25.6 | 2.55 | 25.6 | 3.18 | 27.0 | 0.45 | 74 | 10900 | 3000 | 3050 | 3230 | |
| 6300 | 8.0 | 2.64 | 28.6 | 3.09 | 28.6 | 3.82 | 30.3 | 0.45 | 74 | 12600 | 3190 | 3200 | 3250 |
| 8000 | 3.64 | 31.5 | 4.27 | 31.5 | 5.27 | 33.2 | 0.40 | 76 | 15700 | 3250 | 3280 | 3600 | |
| 10000 | 4.36 | 37.1 | 5.18 | 37.1 | 6.36 | 39.1 | 0.40 | 76 | 19500 | 3270 | 3460 | 3610 | |
| 12500 | 5.00 | 44.0 | 5.91 | 44.0 | 7.27 | 46.5 | 0.35 | 78 | 20600 | 3290 | 3680 | 3640 | |
| 16000 | 6.09 | 53.8 | 7.18 | 53.8 | 8.82 | 56.8 | 0.35 | 80 | 26300 | 3350 | 3960 | 4100 | |
| 20000 | 7.18 | 65.1 | 8.55 | 65.1 | 10.45 | 68.6 | 0.35 | 80 | 31500 | 3460 | 3980 | 4150 | |
| 25000 | 10.0 | 8.55 | 76.9 | 10.09 | 76.9 | 12.36 | 81.2 | 0.30 | 83 | 33500 | 4000 | 3640 | 4370 |
| 31500 | 10.09 | 91.6 | 11.91 | 91.6 | 14.73 | 96.7 | 0.30 | 83 | 40100 | 3890 | 4420 | 4510 | |
| Note: The above parameters are only for designing and selecting reference, and the final parameters are subject to the actual product. | |||||||||||||
Application Scenarios of Oil Filled transformer
The Three-phase Oil-immersed power Transformer serves as a critical component in high-load power systems across industries, with its 800-31500KVA capacity range and 35KV voltage rating enabling diverse applications:
Industrial Sector:
Supports heavy-load operations in metallurgy, chemical, and textile plants.
Features short-circuit impedance design (7%-10.5%) to withstand equipment startup surges and IP54-rated full-sealed structure for dust resistance.
Power Grid Infrastructure:
Acts as a core component in substations, enabling 35KV high-voltage input and multi-level outputs (10KV/0.4KV).
Ideal for urban grid expansion and rural electrification with ultra-low no-load losses (≤20%).
Renewable Energy Integration:
Essential for solar and wind farm grid connections, featuring wide-temperature adaptability (-30℃ to +50℃) and low noise (≤65dB) for urban distributed energy systems.
Specialized Environments:
Deploys in mining, transportation, and critical facilities (e.g., railways, hospitals) with explosion-proof (IP55) and earthquake-resistant (9-seismic rating) capabilities.
Delivers 150% overload capacity for 2 hours to ensure stability during extreme conditions.
Agricultural & Rural Electrification:
Smaller models (≤800KVA) serve villages, while large units empower regional substations.
Lightning-proof design enhances grid reliability, while 25+ year lifespan minimizes maintenance costs.
Detailed photos
Full Lifecycle Service and Support of Oil Filled transformer
1.Pre-Sales Services
Customized selection tools generate compatible solutions based on input voltage, load, and environmental parameters.
Free provision of transformer product drawings and installation layout recommendations.
2.Delivery & Installation
Detailed installation tutorial videos and on-site technical guidance included.
Custom-designed transport frames ensure safety during long-distance shipping.
3.Post-Sales Assurance
Three-phase Oil-immersed Power Transformer offers a 5-year warranty with 24/7 global technical support.
Regular maintenance checkups and firmware upgrades to optimize efficiency.
Emergency response: Engineers dispatched within 24 hours domestically and 72 hours internationally.
pavking and delivery
Why choose us?
GNEE strictly follows the comprehensive acceptance testing process to ensure that the performance of each device meets the standards. Our products and services have been successfully applied in more than 50 countries and regions around the world. As a trusted global industrial partner, we are always committed to helping customers achieve their sustainable development vision through high-quality products and full-process services.
SGS certification certificate
Production environment
FAQ
Q: What Are the Core Competitive Advantages of Your Company?
A: Experience and Scale: Since its establishment in 2008, our company has been focusing on the transformer field for 18 years. We have delivered over 50,000 units of equipment and served more than 2,000 customers globally.
R&D and Production: A team of 200 professionals with a 20,000㎡ modern production base covering three major locations in China: Shijiazhuang, Xingtai, and Anyang. This ensures full autonomy from raw materials to finished products.
Customization Capability: Supports the design of transformers ranging from 50kVA to 5000kVA. Customized solutions can be provided for special scenarios such as high altitude or extreme temperatures.
Q: How Do You Ensure Delivery Time and Quality?
A: Supply Chain Assurance: Leveraging the industrial cluster advantages of three factories, we maintain sufficient raw material inventory, enabling faster order response compared to the industry average by 30%.
Quality Control System: From the precision of core stacking (±0.5mm) to 200 inspection items before product delivery, we ensure that each device complies with international standards such as CE and IEC.
Q: What Is the Delivery Cycle for Standard Products? Will Custom Products Affect Delivery Time?
A: Standard Products: The typical delivery cycle is 15-30 working days (starting from the signing of the contract and receipt of the advance payment).
Custom Products: Delivery cycles may extend depending on specific requirements, usually requiring 30-60 working days. If special materials, non-standard designs, or international transportation are involved, the specific time will be negotiated between both parties.
Q: Does Your Company's Transformers Meet International Standards?
A: Certifications: Passed certifications including IEC 60076 (International Standard), GB/T 6451 (Chinese National Standard), SGS, CE, UL, etc.
Special Certifications: Non-crystalline alloy transformers meet the IEC 61786 (high-efficiency transformer) standard; pre-assembled substations comply with the IEC 62271-200 (pre-assembled substation) requirement.
Q: How to Choose the Appropriate Type of Transformer?
A: Energy Efficiency Priority: Select amorphous alloy or epoxy resin dry-type transformers.
High Load Scenarios: Oil-immersed transformers are preferable.
Complex Distribution Needs: Contact engineers to customize pre-assembled substation solutions.
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