EN
NX2 Three Phase Oil Immersed Transformer(30kVA~31500kVA)
Our oil in transformer solutions use ultra‑pure mineral insulating oil to boost dielectric strength and extend equipment life. This advanced oil circulates naturally to cool and insulate the core and windings, enhancing the transformer’s insulating properties and protecting its solid insulation from thermal and electrical stress. Through continuous R&D, precise breakdown voltage and Dissolved Gas Analysis testing, and iterative core–winding design improvements, we achieve sustainable, energy‑saving operation with reduced losses and lower noise across all efficiency tiers.
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Product Overview
Engineers designed the S-30~31500kVA NX2 Three-Phase Oil-Immersed Transformer for industrial sites and substations. It uses advanced mineral-based oil for insulation and cooling.
The oil flows naturally inside the unit. This helps cool the core and windings. It protects them from heat stress. As a result, the transformer's lifespan and reliability improve greatly.
The NX2 series has a better iron core and a new winding design. This leads to a 23% increase in dielectric strength compared to old paper-only insulation systems. This enhancement guarantees long-term, stable performance in industrial, commercial, and public infrastructure applications, reducing the risk of unexpected failures.
Key Advantages
Enhanced Insulation & Cooling
Superior Dielectric Strength: The high-quality transformer oil provides excellent electrical insulation, preventing partial discharges and breakdowns even under high voltage conditions. This ensures safe and stable operation.
Efficient Heat Dissipation: The oil-immersed design uses natural convection to distribute heat evenly, minimizing hotspots and thermal stress. This not only extends the service life of the transformer but also reduces maintenance needs.
High Efficiency & Low Noise
Reduced Energy Losses: The three-phase structure and optimized windings significantly lower core and load losses. The NX2 series surpasses the GB 20025-2020 efficiency standards, helping users save on energy costs.
Quiet Operation: Oil immersion dampens working noise, making the NX2 much quieter than dry-type transformers. This is ideal for urban substations, residential areas, and other noise-sensitive environments.
Precise Oil Quality Monitoring
Regular Oil Sampling: Technicians routinely test the oil’s breakdown voltage and moisture content on-site or in a lab. This helps ensure that insulation properties stay within the best ranges.
Dissolved Gas Analyzing (DGA) examines gases in the oil. It can find early signs of insulation problems or arcing. This allows for preventive maintenance, reducing the risk of major faults.
Applications
Power Distribution & Substations: These are good for both increasing and decreasing power in city and country grids. They help provide stable and reliable electricity.
Heavy-Duty Industrial Plants: Perfect for steel mills, chemical plants, and manufacturing facilities that require high-capacity, dependable transformers.
Renewable Energy Integration: Effectively connects wind and solar farms to the grid, handling fluctuating loads with stability and efficiency.
Technical standars
GB 1094-2013 《Power Transformer 》
GBT6451-2015 《Oil immersed power transformer technical parameters and requirements 》
IEC 60076 《Power transformer 》
Type description
Performance parameter
| Rated capacity(kVA) | Electrical steel strip | Amorphous alloy | |||||
| No-load loss(W) | Load loss(W) | No-load loss(W) | Load loss(W) | ||||
| Dym11/Yan11 | Vyn0 | Dyn11/Yzn11 | Yyno | ||||
| 30 | 70 | 505 | 480 | 33 | 535 | 510 | |
| 50 | 90 | 730 | 695 | 43 | 780 | 745 | |
| 63 | 100 | 870 | 830 | 50 | 930 | 890 | |
| 80 | 115 | 1050 | 1000 | 60 | 1120 | 1070 | |
| 100 | 135 | 1265 | 1200 | 75 | 1350 | 1285 | |
| 125 | 150 | 1510 | 1440 | 85 | 1615 | 1540 | |
| 160 | 180 | 1850 | 1760 | 100 | 1975 | 1880 | |
| 200 | 215 | 2185 | 2080 | 120 | 2330 | 2225 | |
| 250 | 260 | 2560 | 2440 | 140 | 2735 | 2610 | |
| 315 | 305 | 3065 | 2920 | 170 | 3275 | 3120 | |
| 400 | 370 | 3615 | 3440 | 200 | 3865 | 3675 | |
| 500 | 430 | 4330 | 4120 | 240 | 4625 | 4400 | |
| 630 | 510 | 4960 | 320 | 5300 | |||
| 800 | 630 | 6000 | 380 | 6415 | |||
| 1000 | 745 | 8240 | 450 | 8800 | |||
| 1250 | 870 | 9600 | 530 | 10260 | |||
| 1600 | 1050 | 11600 | 630 | 12400 | |||
| 2000 | 1225 | 14640 | 710 | 14800 | |||
| 2500 | 1440 | 14840 | 860 | 16300 | |||
Maintenance & Reliability
Preventive DGA Testing: Regularly analyzing dissolved gases helps find early problems like overheating or partial discharges. This allows for quick action before serious issues develop.
Oil Filtration & Regeneration: Inline filtration systems remove moisture and particulates, maintaining oil clarity and performance for decades.
Buchholz Relay Protection: This safety device detects gas accumulation from internal faults, providing rapid protection and minimizing damage.
Environmental Impact
Energy Efficiency: High operational efficiency reduces system losses and lowers greenhouse gas emissions across the power network.
Recyclable Oil: Companies can reclaim and purify the mineral insulating oil, minimizing waste and environmental impact.
The S-30~31500kVA NX2 series sets a new benchmark for efficiency, noise reduction, and reliability in transformer technology.
It has a modern oil-immersed design.
This makes it a great choice for power distribution and industrial use. Contact us today for detailed specifications and expert technical support!
