125kVA 20kV Oil-immersed Distribution Transformer S(B)22-NX1 Energy Efficiency Level 1
| 20kV oil-immersed distribution transformer S(B)22-NX1 energy efficiency level 1 | |||||||
| Capacity(kVA) | Voltage Combination | Vector group | No load loss(W)(W) | Full Load Loss (W) | Short Circuit Impedance (%) | ||
| HV(kV) | H.V. Tapping Range | LV(kV) | |||||
| 30 | 20 20(10) or others | ±5%/ ±2×2.5% | 0.4 | Dyn11 Yzn11 Yyn0 |
70 | 480/560 | 5.5 |
| 50 | 85 | 700/660 | |||||
| 63 | 100 | 830/800 | |||||
| 80 | 120 | 990/940 | |||||
| 100 | 135 | 1190/1140 | |||||
| 125 | 160 | 1440/1360 | |||||
| 160 | 190 | 1740/1660 | |||||
| 200 | 225 | 2060/1970 | |||||
| 250 | 265 | 2420/2300 | |||||
| 315 | 315 | 2880/2750 | |||||
| 400 | 375 | 3410/3240 | |||||
| 500 | 445 | 4070/3880 | |||||
| 630 | 530 | 4680 | 6 | ||||
| 800 | 635 | 5660 | |||||
| 1000 | 750 | 7710 | |||||
| 1250 | 895 | 9000 | |||||
| 1600 | 1080 | 10880 | |||||
| 2000 | 1270 | 13760 | |||||
| 2500 | 1525 | 15990 | |||||
| The full load loss “/” is followed by the data of the vector group Yyn0 | |||||||
* Above specification may be changed to improve performance.
* Transformer of other specification than listed above can be made to order.
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Core Values and Adaptable Scenarios:
- Ultra-Low Loss Characteristic: Its no-load loss is only 60%-70% of that of ordinary S13-type transformers. In the power distribution system, it can greatly reduce "invalid energy consumption", making it particularly suitable for scenarios with long-term full-load operation and helping users reduce electricity expenses.
- Strong Environmental Compatibility: Some models adopt environmentally friendly insulating materials and low-noise designs, which can meet the usage requirements of ecologically sensitive areas (such as suburban industrial parks and power distribution points around scenic areas). At the same time, they comply with the national environmental protection policies on green standards for power equipment.
- Adaptability to Intelligent Operation and Maintenance: The built-in intelligent monitoring module can seamlessly connect with the smart operation and maintenance systems of power grid companies, supporting remote data reading, status evaluation and fault diagnosis. This reduces the frequency of manual inspections, lowers operation and maintenance costs, and improves the reliability of the power distribution system.
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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