Three Phase 250 Kva Distribution Transformer 20kV S(B)13-NX3 Energy Efficiency Level 3
| 20kV oil-immersed distribution transformer S(B)13-NX3 energy efficiency level 3 | |||||||
| Capacity(kVA) | Voltage Combination |
Vector group |
No load loss (W) | Full Load Loss (W) | Short Circuit Impedance (%) | ||
| HV(kV) | H.V. Tapping Range | LV(kV) | |||||
| 30 |
20 |
±5%/ ±2×2.5% | 0.4 | Dyn11 Yzn11 Yyn0 |
80 | 660/630 | 5.5 |
| 50 | 100 | 960/910 | |||||
| 63 | 120 | 1140/1090 | |||||
| 80 | 140 | 1370/1300 | |||||
| 100 | 160 | 1640/1570 | |||||
| 125 | 190 | 1980/1880 | |||||
| 160 | 230 | 2410/2300 | |||||
| 200 | 270 | 2850/2720 | |||||
| 250 | 320 | 3340/3180 | |||||
| 315 | 380 | 4000/3810 | |||||
| 400 | 460 | 4720/4490 | |||||
| 500 | 540 | 5640/5380 | |||||
| 630 | 650 | 6480 | 6 | ||||
| 800 | 780 | 7840 | |||||
| 1000 | 920 | 10700 | |||||
| 1250 | 1100 | 12500 | |||||
| 1600 | 1330 | 15100 | |||||
| 2000 | 1560 | 19100 | |||||
| 2500 | 1870 | 22200 | |||||
| The full load loss “/” is followed by the data of the vector group Yyn0 | |||||||
- Rural Power Grids: Rural areas often have large distribution coverage, scattered load points, and limited maintenance budgets. The transformer’s cost advantage aligns with rural grid investment constraints, while its outdoor installation capability eliminates the need for expensive indoor 配电 rooms. Additionally, its load flexibility handles the seasonal peaks in rural electricity use (e.g., irrigation in summer, heating in winter).
- Suburban Industrial Distribution: Suburban small and medium-sized enterprises (SMEs)—such as hardware factories, food processing plants, and packaging workshops—have moderate and stable power demands. They prioritize cost control over high energy efficiency, making the transformer a cost-effective choice. The transformer’s ability to withstand short-term overloads also accommodates occasional peak loads (e.g., when starting large machinery like compressors).
- Outdoor Temporary Power Supply: For temporary projects such as road construction, building renovation, and outdoor events (e.g., rural fairs), the transformer’s quick installation (due to standardized design) and outdoor durability meet the demand for flexible, short-term power supply. Its low initial cost also reduces the overall budget for temporary power solutions, as these projects do not require long-term, high-investment equipment.
Our customers
Production Process
Professional Equipment
Target Market
Guanggao Transformer is a professional transformer manufacturer. We produce single-phase, three-phase, dry-type, distribution, and high-voltage transformers (110 kV and above). We meet IEEE/ANSI/UL/CSA and IEC standards. Guanggao Transformer has nearly 25 years of transformer export experience. The company has modern laboratory construction, such as high-voltage test hall, within which there is a 3000kV lightning impulse testing device, and some advanced testing equipment, such as CA-21 moisture analyzer from Mitsubishi, American Fluke Ti30 infrared image detector, American RM-3WE three dimensional vibration. And it was identified as the national power transformer energy efficiency testing laboratories in 2011.
The company has undertaken the National Olympic Security Power Project, the National 851 project, the whole construction of the Guangzhou Asian Games, Guangzhou BRT and other important security power projects. The products used in the above projects are highly safe and in a reliable operation throughout the country. Also, these products are exported to Myanmar, Madagascar, Malaysia,other countries. Enjoying a good reputation on the electromechanical market, "Guanggao Brand"was identified as Guangdong famous brand, the product was identified as the National Energy Efficiency Star Products and Brand-Name Products in Guangdong Province.If you have transformer needs, please contact us.
- Add: No. 15, Yunpu 1st Road, Yunpu Industrial Zone, Huangpu, Guangzhou, Guangdong, China
- Tel: (+86)-020-82505003
- Email: ggelectric@gz-gg.com
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.