15515673159
China Energy-Saving SZ11 Three-Phase Oil-Immersed Power Distribution Transformer 20 KV 1000 KVA - Suppliers & Factory
Product Features
High short-circuit resistance and reliable operation safety
Through multi-dimensional structural optimization design, the anti-short-circuit performance is enhanced. Advanced simulation software is used to accurately calculate the leakage magnetic field and force field of the windings, optimize the distribution of ampere-turns and shielding measures, and minimize the short-circuit electromagnetic force. The windings are wound using semi-hard copper wires or self-adhesive staggered wires on a high-stiffness hard paper tube. The wire buns are designed with "0" tolerance, the end wire turns are flattened and tightly bound with non-woven tape, and the insulation of key parts is strengthened.
Efficient heat dissipation design, prolongs insulation lifespan
The full oil circuit guiding cooling structure is adopted, with longitudinal oil channels set inside the windings, combined with the end face guiding design of the coil. This enables the transformer oil to form an efficient circulating cooling circuit, quickly removing the heat from the windings and the core. The oil tank adopts a corrugated structure or is paired with an efficient plate-type heat sink. The corrugated oil tank's corrugations can freely expand and contract with the oil temperature, enhancing the heat dissipation area and improving the sealing performance. Through temperature field simulation to optimize the cooling path, the hotspot temperature of the windings is effectively reduced. Compared with traditional products, the average temperature rise is reduced by 10K, significantly delaying the insulation aging speed, and extending the insulation life of the equipment by more than double.
Fully sealed structure design, no maintenance required and more convenient to use
A fully sealed bell-shaped oil tank or corrugated oil tank structure is adopted, eliminating the traditional oil reservoir. Through corrugated sheets or diaphragm-type oil reservoirs, the volume compensation of the oil is achieved, completely isolating the transformer oil from the atmosphere. This effectively prevents moisture, dust, and impurities from entering, and slows down the deterioration rate of the oil.
Product Specifications
| rated capacity(KVA) | connection group lable | voltage conbination(Kv) | no-loadcurrent(%) | loadloss(T) | no-load loss(T) | short circuit impedance(%) | ||
| (H.V.) | High-voltage tapping range | (L.V.) | ||||||
| 50 | Dyn1 1Yym0 |
35 38.5 |
士 5% ±2X2.5% |
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 (FAQ)
How does this transformer achieve high short-circuit resistance?
The anti-short-circuit performance is enhanced through multi-dimensional structural optimization. It uses advanced simulation software to calculate magnetic and force fields, optimizing ampere-turns. Additionally, the windings are wound on a high-stiffness hard paper tube with flattened, tightly bound end wire turns.
What is the benefit of the efficient heat dissipation design?
It employs a full oil circuit guiding cooling structure that quickly removes heat from the windings and core. This reduces the average temperature rise by 10K compared to traditional products, significantly delaying insulation aging and extending the equipment's insulation life by more than double.
Does this oil-immersed transformer require regular maintenance?
No, it features a fully sealed structure design requiring no maintenance. By utilizing a completely sealed bell-shaped or corrugated oil tank, the transformer oil is isolated from the atmosphere, preventing moisture, dust, and impurities from entering.
What is the rated capacity range for these transformers?
According to the product specifications, the rated capacity ranges from 50 KVA up to 2500 KVA to suit various application needs.
What are the high-voltage and low-voltage combinations?
The high-voltage (H.V.) combination is 35 or 38.5 kV with a tapping range of ±5% or ±2x2.5%. The low-voltage (L.V.) output is standard at 0.4 kV.