15515673159
China Suppliers Factory Oil-Immersed 10kV 500kVA Voltage Regulating Outdoor Power Distribution Transformer
Product Features
1
Ultra-Low No-Load Loss — A Green & Energy-Saving Benchmark
The key lies in using high magnetic conductivity grain-oriented cold-rolled silicon steel sheets, preferably in the ultra-thin 0.20mm specification. Their magnetic permeability can reach 1.93T, with the easily magnetized structure accounting for over 95%. This reduces magnetic hysteresis loss from the source. During production, the 45° full inclined seam holeless stacking process and the horizontal five-step laminating technology are adopted, combined with the core column epoxy glass tape binding reinforcement. This minimizes the magnetic circuit gap and leakage loss to the greatest extent. Compared with traditional S9 series products, the average no-load loss is reduced by more than 30%, the no-load current decreases by 70%–85%, and even during long-term light-load operation, significant energy savings can be achieved.
2
Low Load Loss — Efficient Power Transmission
The windings are made of high-purity oxygen-free copper electromagnetic wire, which undergoes special surface treatment to ensure the smoothness and absence of burrs on the wire, effectively reducing the resistance and eddy current losses. According to the capacity requirements, multi-layer cylindrical, intertwined continuous, or inner shielded winding structures are adopted. For large-capacity products, composite wires are also used. By optimizing the arrangement of the wire buns and the distribution of ampere-turns, the winding current is evenly distributed, reducing local overheating and concentrated losses.
3
Load-Carrying Non-Stop Voltage Regulation — Stable & Controllable Voltage
Equipped with a high-precision on-load voltage regulating switch, a separate voltage regulating winding is specially designed. The axial dimensions and magnetic center of each winding are strictly controlled to ensure stable electromagnetic balance during the voltage regulation process. It can smoothly switch the tap position within the range of 0 to 100% of the rated load. The voltage regulation accuracy is ±2.5%, and it can quickly respond to voltage fluctuations in the power grid and precisely maintain the output voltage within the set range.
Product Specifications
| Rated Capacity (KVA) | Connection Group Label | Voltage Combination (KV) | No-Load Current (%) | Load Loss (T) | No-Load Loss (T) | Short Circuit Impedance (%) | ||
|---|---|---|---|---|---|---|---|---|
| H.V. | High-Voltage Tapping Range | L.V. | ||||||
| 50 | Dyn11 Yyn0 |
35 38.5 |
±5% ±2×2.5% |
0.4 | 1.30 | 2100/1140 | 130 | 6.5 |
| 100 | 1.10 | 2010/1910 | 185 | |||||
| 125 | 1.10 | 2370/2260 | 215 | |||||
| 160 | 1.00 | 2820/2680 | 225 | |||||
| 200 | 1.00 | 3320/3160 | 270 | |||||
| 250 | 0.95 | 3950/3760 | 320 | |||||
| 315 | 0.95 | 4750/4530 | 385 | |||||
| 400 | 0.85 | 5740/5470 | 465 | |||||
| 500 | 0.85 | 6910/6580 | 545 | |||||
| 630 | 0.65 | 7860 | 665 | |||||
| 800 | 0.65 | 9400 | 785 | |||||
| 1000 | 0.65 | 11500 | 920 | |||||
| 1250 | 0.60 | 13900 | 1120 | |||||
| 1600 | 0.60 | 16600 | 1350 | |||||
| 2000 | 0.55 | 19700 | 1590 | |||||
| 2500 | 0.55 | 23200 | 1890 | |||||
Detail Pictures
Frequently Asked Questions
Q
What makes this oil-immersed transformer more energy-efficient than traditional S9 series transformers?
This transformer uses high magnetic conductivity grain-oriented cold-rolled silicon steel sheets in the ultra-thin 0.20mm specification, combined with the 45° full inclined seam holeless stacking process and horizontal five-step laminating technology. These innovations reduce average no-load loss by more than 30% and lower no-load current by 70%–85% compared to traditional S9 series products, making it a significantly greener and more energy-efficient choice.
Q
What type of winding material is used, and why does it matter?
The windings are made of high-purity oxygen-free copper electromagnetic wire with special surface treatment to ensure smoothness and eliminate burrs. This directly reduces resistance and eddy current losses, resulting in lower load losses and more efficient power transmission — especially important for large-capacity applications.
Q
Can this transformer perform voltage regulation while under load without interruption?
Yes. The transformer is equipped with a high-precision on-load voltage regulating switch and a dedicated voltage regulating winding. It can smoothly switch tap positions across 0 to 100% of rated load without any power interruption, maintaining voltage regulation accuracy at ±2.5% and responding quickly to grid voltage fluctuations.
Q
What capacity range is available for this oil-immersed transformer?
This transformer is available in a wide range of rated capacities from 50 KVA up to 2500 KVA, making it suitable for a broad variety of industrial, commercial, and utility power distribution applications.
Q
What connection group labels and voltage combinations are supported?
The transformer supports Dyn11 and Yyn0 connection group labels. The high voltage (H.V.) is 35 kV or 38.5 kV with a tapping range of ±5% or ±2×2.5%, and the low voltage (L.V.) output is 0.4 kV. The short circuit impedance is 6.5% across all capacity ratings.
Q
Is this transformer suitable for long-term light-load operation?
Absolutely. Thanks to the ultra-low no-load loss design, this transformer achieves significant energy savings even during extended periods of light-load operation. The optimized core structure and winding arrangement minimize standby losses, making it a cost-effective solution for applications with variable or intermittent load profiles.