20kV Dry-type Distribution Transformer SC(B)18-NX1 Energy Efficiency Level 1 800kVA
| 20kV dry-type distribution transformer SC(B)18-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) | F(120℃) | H(145℃) | ||||
| 50 | 20 22 24 | ±5%/ ±2×2.5% | 0.4 | Dyn11 Yyn0 | 219 | 1110 | 1180 | 6 |
| 100 | 348 | 1790 | 1920 | |||||
| 160 | 432 | 2220 | 2380 | |||||
| 200 | 470 | 2650 | 2830 | |||||
| 250 | 542 | 3080 | 3290 | |||||
| 315 | 626 | 3670 | 3920 | |||||
| 400 | 742 | 4360 | 4660 | |||||
| 500 | 872 | 5210 | 5570 | |||||
| 630 | 985 | 6160 | 6590 | |||||
| 800 | 1130 | 7430 | 7960 | |||||
| 1000 | 1340 | 8800 | 9360 | |||||
| 1250 | 1534 | 10400 | 11100 | |||||
| 1600 | 1800 | 12400 | 13300 | |||||
| 2000 | 2091 | 14700 | 15800 | |||||
| 2500 | 2503 | 17400 | 18600 | |||||
| 2000 | 2091 | 16000 | 17200 | 8 | ||||
| 2500 | 2503 | 19100 | 20400 | |||||
* 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 Advantages & Application Scenarios
Key strengths include ultra-low no-load loss (slashing standby energy waste by up to 30% compared to mid-range models), ultra-quiet operation (typically ≤50dB, compliant with strict noise regulations for public and medical spaces), and robust short-circuit resistance—all paired with excellent environmental adaptability (resisting moderate humidity and dust without performance degradation). It is ideally suited for scenarios with rigorous requirements for energy efficiency, noise control, and operational safety: hospitals (where quiet environments and uninterrupted power are vital for patient care), elite schools (to avoid noise disrupting teaching activities), luxury commercial complexes (aligning with green building certifications), and core industrial parks (supporting high-precision production with stable, low-consumption power). Over the long term, its superior energy efficiency not only delivers substantial electricity cost savings but also aligns with global sustainability goals by reducing carbon emissions.
Guanggao Transformer is a professional transformer manufacturer. We produce single-phase, three-phase, dry-type, distribution, and high-voltage transers (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 impulsforme 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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