35 kV Class Three Phase Distribution Oil Immersed Transformer
35 kV Class Three Phase Distribution Oil Immersed Transformer
Zisheng’s 35 kV Class Three Phase Distribution Oil Immersed Transformer is a flagship high-voltage product of Baoding Zisheng Electrical, a manufacturer with 20+ years of power equipment R&D and production experience. Compliant with IEC, IEEE, and ANSI standards, it features a cold-rolled silicon steel core and oxygen-free copper coils, offering low no-load/on-load loss and reliable sealing. Ideal for large-scale power grids, industrial parks, and infrastructure projects, it delivers stable operation and global after-sales support.
Key Features:
- Low Loss Core
- High Insulation Safety
- Reliable Sealing
- Stable Operation
- Wide Grid Adaptability
What makes the 35 kV Class Three Phase Distribution Oil Immersed Transformer energy-efficient?
How does the 35 kV Class Three Phase Distribution Oil Immersed Transformer ensure insulation safety at 35 kV?
What sealing technology does the 35 kV Class Three Phase Distribution Oil Immersed Transformer use for long service life?
Why is the 35 kV Class Three Phase Distribution Oil Immersed Transformer suitable for large-scale power grids?
How does the 35 kV Class Three Phase Distribution Oil Immersed Transformer adapt to harsh environments?
Case 1: State Grid Shandong Electric Power Co., Ltd.
Application Scenario: 35 kV power grid expansion to replace aging transformers and improve transmission efficiency.
Solution: 40 units of 10000 kVA fully sealed transformers with low-loss design and anti-corrosion treatment.
Results: No-load loss reduced by 32%, annual energy savings of ~$680,000; stable operation for 24 months with zero unplanned outages, meeting Shandong’s smart grid standards.
Case 2: Tenaga Nasional Berhad (TNB, Malaysia)
Application Scenario: 35 kV power distribution for high-speed rail stations and supporting facilities, requiring high reliability and compact design.
Solution: 25 units of 5000 kVA transformers with corrugated plate radiators and compact structure.
Results: Compliant with Malaysian Standard (MS IEC 60076), operated continuously for 18 months without downtime; compact design saved 20% installation space, supporting on-schedule project completion.
Case 3: Saudi Electricity Company (SEC)
Application Scenario: Outdoor 35 kV substations in high-temperature desert environments, requiring heat resistance and low maintenance.
Solution: 30 units of 8000 kVA transformers with optimized heat dissipation (enhanced radiators) and salt spray-resistant coating.
Results: Stable operation at 52℃ ambient temperature; maintenance frequency reduced by 60%, meeting SEC’s “low maintenance” requirements; passed SABER certification for market access.
Case 4: Kenya Power and Lighting Company (KPLC)
Application Scenario: Long-distance 35 kV power transmission for rural areas, requiring cost-effectiveness and durability.
Solution: 35 units of 3150 kVA conservator-type transformers with reinforced tank structure and dust-proof design.
Results: Reduced rural grid construction costs by 40%; power supply coverage expanded to 80+ villages; withstood dusty and humid conditions, service life verified to exceed 20 years.
| Rated Power (kVA) | Rated High Voltage (kV) | Rated Low Voltage (kV) | Connection Symbol | Short Circuit Impedance (%) | No Load Loss (W) | On-Load Loss (W) | No Load Current (%) | Cooling Mode | Tank Type |
|---|---|---|---|---|---|---|---|---|---|
| 800 | 35/38.5 | 6.3/6.6 | Yd11/Ynd11 | 6.0 | 980 | 9350 | 1.05 | ONAN | Sealed/Conservator |
| 1000 | 35/38.5/44 | 10.5/12.47 | Yd11/Ynd11 | 6.0 | 1160 | 11500 | 1.00 | ONAN | Sealed/Conservator |
| 2500 | 35/38.5/44 | 10.5/13.8 | Yd11/Ynd11 | 6.5 | 2450 | 19600 | 0.75 | ONAN/OFAF | Sealed/Conservator |
| 5000 | 35/38.5/44 | 10.5/13.8 | Yd11/Ynd11 | 7.0 | 4270 | 31200 | 0.60 | ONAN/OFAF | Sealed/Conservator |
| 10000 | 35/38.5/44 | 10.5/13.8 | Yd11/Ynd11 | 7.5 | 8260 | 45100 | 0.55 | OFAF | Sealed/Conservator |
| 20000 | 35/38.5/44 | 10.5/13.8 | Yd11/Ynd11 | 7.58 | 14100 | 79100 | 0.50 | OFAF | Sealed/Conservator |
| 31500 | 35/38.5/44 | 10.5/13.8 | Yd11/Ynd11 | 8.0 | 20000 | 112200 | 0.40 | OFAF | Sealed/Conservator |
Note: All parameters comply with IEC 60076-1/7 standards. Custom voltage grades (18kV/22kV) and technical parameters are available for specific grid requirements.
It fully meets IEC 60076, IEEE C57.12, and ANSI C57.12.00 standards, holding CE (LVD/EMC), SGS, RoHS, and ISO 9001 certifications. Regional certifications such as SABER (Middle East), UL/CSA (North America), and UKCA (UK) can be applied for to ensure market access.
Standard models in stock: 20-25 working days; customized orders (e.g., special voltage, enhanced heat dissipation): 30-40 working days. Expedited delivery (15 days) is available for urgent projects with a 15% surcharge.
Yes. We can adjust short-circuit impedance, tap changer range, and voltage levels to match your local grid standards. For extreme environments (high temperature, salt spray, dust), we offer customized anti-corrosion, heat dissipation, and protection grade (IP44/IP54) upgrades.
Compared to 10 kV/20 kV transformers, it has 2-3 times higher power supply capacity, lower line loss in long-distance transmission (reduced by 40-50%), and better adaptability to large-scale power grids. It is designed for high-voltage distribution scenarios such as regional power grids and large industrial parks.
We have technical teams stationed in Southeast Asia, the Middle East, and Africa, offering on-site installation guidance, commissioning, and maintenance. All products come with a 12-month warranty, and we provide lifelong technical support and spare parts supply via global logistics networks.
Routine maintenance is simple: monthly check oil level (conservator type) and operating temperature; quarterly inspect sealing joints for leaks; annually clean radiators (more frequently in dusty areas); hermetically sealed models require no oil replacement under normal operation for 20+ years.
Yes. It is optimized for renewable energy grid integration, with enhanced voltage regulation to handle fluctuations from solar/wind power. We can customize short-circuit impedance and insulation levels to match your renewable energy system’s technical requirements.
With high-quality raw materials, advanced production technology, and strict quality control, the designed service life is 25 years. Under normal operation and regular maintenance, the actual service life can extend to 30 years.
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