The bridge of power transmission, the backbone of energy-transformers make electricity flow seamlessly!
01 General
1.1 Project Description
The 2 MVA distribution transformer was delivered to Albania in 2024.The rated power of the power distribution transformer is 2000 kVA with ONAN cooling, the primary voltage is 20 kV with ±2*2.5% tapping range@ HV side (NLTC), the secondary voltage is 0.4 kV, they formed a vector group of Dyn5.Oil-immersed distribution transformer has the characteristics of energy saving and environmental protection, low loss, low noise, high overload, high mechanical strength, strong short-circuit resistance, small partial discharge, good thermal stability, high reliability, long service life and so on. Safe, fireproof, pollution-free, can be directly operated in the load center, can also be widely used in industry, agriculture, transportation, urban communities and other fields, while for new energy power stations, data centers, 5G base stations, heating and other fields can effectively save energy and reduce consumption and emission. Through reasonable ampere-turns balance strength calculation, densification treatment to resist winding, uniform distribution and compaction, special force protection. In addition, the sealing flange adopts groove structure, the oil discharge valve adopts copper valve, and the radiator adopts vacuum butterfly valve to ensure the sealing performance.
1.2 Technical Specification
2000 kVA power distribution transformer specifications type and data sheet
| Delivered to | Albania |
| Year | 2024 |
| Type | Power transformer |
| Standard | IEC60076 |
| Rated Power | 2000KVA |
| Frequency | 50HZ |
| Phase | 3 |
| Cooling Type | ONAN |
| Primary Voltage | 20 KV |
| Secondary Voltage | 0.4 KV |
| Winding Material | Copper |
| Angular displacement | Dyn5 |
| Impedance | 6% |
| Tap Changer | NLTC |
| Tapping Range | ±2*2.5%@HV side |
| No Load Loss | 1.95KW |
| On Load Loss | 19.14KW |
| Accessories | Standard Configuration |
1.3 Drawings
2000 kVA power distribution transformer diagram drawing and size.
02 Manufacturing
2.1 Core
| The core material is made of high permeability and low loss silicon steel sheet with excellent performance, effectively reducing no-load loss and noise. The iron core adopts a multi-level all-oblique joint structure, so that the magnetic field distribution at the joint of the iron core is better, and the no-load loss and noise are reduced. Coil using suitable wire type, such as paper-covered wire or self-adhesive transposition wire, effectively reduces load loss. It can effectively reduce the operating costs of the power grid and users. |  |
2.2 Winding
 | The coil adopts elliptic structure. The low-voltage coil is wrapped with foil and insulated with high-quality A-E class insulation materials; The high voltage coil is wound with copper wire to improve lightning resistance. The axial ampere-turns magnetic circuit of the coil is evenly distributed, which can reduce the mechanical force and improve the anti-short circuit ability of the coil. |
2.3 Tank
| The surface of the product is sprayed with paint after oil removal, embroidering and sandblasting treatment, which has good moisture resistance and can meet the special requirements of metallurgical and petrochemical systems and wet and dirty areas. Suitable for operation in high humidity and other harsh environments. The body and the fuel tank have a solid positioning structure, so that it is not easy to displace during transportation. The product can always be stable during long-term operation. |  |
2.4 Final Assembly
03 Testing
1. Measurement Of Voltage Ratio And Check Of Phase Displacement
2. Measurement Of Winding Resistance
3. Measurement Of D.C Insulation Resistance Between Each Winding To Earth And Between Windings
4. Measurement Of No-Load Loss and Current
5. Induced Voltage Withstand Test
6. Measurement of Short-circuit Impedance and Load Loss
7. Applied Voltage Test (AV)
8. Oil Test
9. Leak Testing With Pressure For Liquid-Immersed Transformers (Tightness Test)
04 Packing and Shipping
05 Site And Summary
power distribution transformer are indispensable core equipment in power systems, ensuring efficient, stable, and safe energy transmission and distribution. Our transformers are built with advanced technology and strict manufacturing standards, guaranteeing exceptional quality and reliable performance. They provide robust power support for industrial, commercial, and public infrastructure applications. By choosing our products, you gain durable and dependable energy solutions, taking a step with us toward a more efficient and sustainable future!
