Product Overview This 20kV full-sealed oil-immersed distribution transformer features ultra-low loss performance, with actual measured indicators exceeding national and international standards. Certified by CE and KEMA, it has been verified for high reliability through stable operation in more than 50 countries and regions, making it ideal for 20kV power distribution networks, industrial and mining enterprises, and civil building power supply and distribution systems.
The transformer adopts advanced design and manufacturing technologies, including 45° full miter joint step-lap laminated core, high-voltage copper tape winding and low-voltage copper foil winding structure, delivering low magnetic leakage, high mechanical strength and strong short-circuit withstand capability. Its tank is precision-processed with Mitsubishi equipment and ABB robotic welding, with electrostatic plastic spraying for long-term corrosion resistance and a fully sealed maintenance-free design supporting a service life of over 30 years.
Constructed with high-quality raw materials including Baosteel and WISCO silicon steel sheets, premium oxygen-free copper and CNPC transformer oil, the product complies with IEC 60076 series, IEC 6013, IEC 60214-1, IEC 60296, GB/T 6451-2015, GB/T 7597-2007 and other standards. Jinma Electric has supplied 2,598 OEM units to European customers including Spain, Germany, France, Italy, Greece, Iceland and Finland, establishing a strong reputation in the European market.
| (kVA) Rated Capacity | Voltage Combined | Vector-group | (%)Short-circui t Impedance | (w) No-load Loss | (w) 75℃ Load loss | ||
| HV (kV) | Tapping Ranges | LV (kV) | |||||
| 30 | HV 20 | ±5% ±2×2.5% | LV 0. 4 | Dyn11 Yyn0 | 4 | 100 | 690/660 |
| 50 | 130 | 1010/960 | |||||
| 63 | 150 | 1200/1150 | |||||
| 80 | 180 | 1440/1370 | |||||
| 100 | 200 | 1730/1650 | |||||
| 125 | 240 | 2080/1980 | |||||
| 160 | 290 | 2540/2420 | |||||
| 200 | 340 | 3000/2860 | |||||
| 250 | 400 | 3520/3350 | |||||
| 315 | 480 | 4210/4010 | |||||
| 400 | 570 | 4970/4730 | |||||
| 500 | 680 | 5940/5660 | |||||
| 630 | 4. 5 | 810 | 6820 | ||||
| 800 | 980 | 8250 | |||||
| 1000 | 1150 | 11330 | |||||
| 1250 | 1380 | 13200 | |||||
| 1600 | 1660 | 15950 | |||||
| 2000 | 1950 | 19140 | |||||
| 2500 | 2340 | 22220 | |||||
Transformers feature low loss with actual test data better than standard, and hold CE & KEMA certifications. They are verified in over 50 countries and comply with IEC 60076, IEC 60214-1, GB/T 6451-2015 and other international standards. Strict production control and full inspection guarantee stable and safe performance.
Jinma Electric adopts high-quality grain-oriented silicon steel, premium oxygen-free copper, and high-grade transformer oil from CNPC. Core, winding and tank are all made with top-grade materials to ensure long service life and low loss.
Standard models follow common IEC/GB ratings and dimensions. Customized versions support special voltage, tapping range, protection devices, terminal type, paint color and export packaging according to customer requirements.
Standard accessories include thermometer, oil level gauge, pressure relief device, earthing bolts, lifting lugs, nameplate and export wooden packaging. Additional accessories can be added upon request.
Yes. We offer full technical support including parameter selection, installation guidance, testing consultation and after-sales maintenance. Professional engineers respond quickly to solve on-site problems.
We provide factory test reports, CE & KEMA certification, material certificates, quality inspection reports and all required customs documents to meet customs clearance and project acceptance requirements.
