15515673159
China Suppliers SZ11 Three-Phase 20 KV 1000 KVA Oil-Immersed Power Distribution Transformer Factory Energy-Saving Efficiency
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 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 | Dyn1 / Yym0 | 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 resistant to short-circuit faults?
The transformer uses multi-dimensional structural optimization combined with advanced simulation software to accurately calculate leakage magnetic fields and force fields. Windings are wound with semi-hard copper or self-adhesive staggered wires on high-stiffness paper tubes, with "0" tolerance wire bun design and reinforced insulation at key parts, significantly minimizing short-circuit electromagnetic forces.
Q
How does the cooling system work in this transformer?
A full oil circuit guiding cooling structure is adopted, featuring longitudinal oil channels inside the windings and end face guiding on the coils. This allows transformer oil to circulate efficiently, rapidly removing heat from windings and the core. The corrugated oil tank or plate-type heat sink further enhances the heat dissipation area and overall cooling performance.
Q
By how much does this transformer extend insulation lifespan compared to traditional products?
Through temperature field simulation and optimized cooling paths, the average winding temperature rise is reduced by 10K compared to traditional products. This significantly slows down insulation aging, extending the insulation life of the equipment by more than double.
Q
Does this transformer require regular oil maintenance or oil reservoir management?
No. This transformer adopts a fully sealed bell-shaped or corrugated oil tank structure that eliminates the traditional oil reservoir. Volume compensation is achieved through corrugated sheets or diaphragm-type oil reservoirs, completely isolating the transformer oil from the atmosphere, requiring no routine oil maintenance.
Q
What is the available capacity range and high-voltage specification for this transformer?
The transformer is available in rated capacities ranging from 50 KVA to 2500 KVA. The high-voltage (H.V.) specification supports 35 KV and 38.5 KV, with tapping ranges of ±5% or ±2×2.5%, and a low-voltage (L.V.) output of 0.4 KV. The short-circuit impedance is 6.5% across all capacity ratings.
Q
What connection group labels are supported by this oil-immersed transformer?
This transformer supports Dyn1 and Yym0 connection group labels, making it suitable for a wide range of power distribution applications and compatible with standard grid configurations across various industrial and commercial installations.