1,000+ Electrical Transformers (7.2–34.5 kV, 25–3000 kVA) — UL Evaluated, Certificate of Compliance Available — In Stock & Ready to Ship from Houston, CA & Florida. Contact Us Today!
Primary Voltage Ratings: 12.47kV & 24.94kV
Secondary Voltage Ratings: 600Y/347 V
H.V. TAP RANGE: 11000V-28800V
CONNECTION TYPE: UL, cUL, CSA
TYPE: SF11-3000-3750/12.4724.94/0.6
BIL: 30-125kV
Standards: CSA C88
Application: Distribution system
Power Rating: 3750 kVA
Daelim Transformer specializes in producing transformers that comply with rigorous standards such as CSA, ANSI/IEEE, and CUL&UL, ensuring the highest levels of quality and safety. With a strong presence in the market, Daelim Transformer has established successful partnerships with Fortune 500 companies, including Amazon, Eaton, Exxon Mobil, and Dow. These collaborations demonstrate the company’s reputation and ability to meet the demanding requirements of major industry players. Daelim Transformer offers customizable solutions for the 3750 kVA and 3500 kVA Substation Transformers, allowing you to tailor the transformer to your specific technical requirements.
| 3750 kVA Substation Transformer Specifications | |||
| HV | 12.47/24.94kV | HV BIL | 125 kV |
| LV | 600 Y/346 V | LV BIL | 30 kV |
| Power Rating(ONAN) | 3000 kVA | Oil weight | 1890L |
| Power Rating(ONAF) | 3750 kVA | Total weight | 16080lbs |
| Frequency | 60Hz | Color | Grey 70 |
| HV(12470V) | 14400V | HV(24940V) | 28800V |
| 13800V | 27600V | ||
| 13200V | 26400V | ||
| 12470V | 24940V | ||
| 12000V | 24000V | ||
| 11500V | 23000V | ||
| 11000V | 22000V | ||
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Contact Daelim Transformer for special requirements
The 3750 kVA substation transformer is specifically designed for the American market. It features a dual high voltage design, enabling the transformer to operate at two different voltage levels. The transformer can be switched between a high voltage of 24.94 kV and a lower voltage of 12.47 kV, providing flexibility and compatibility with various electrical systems and requirements in the American market. This versatility allows the transformer to efficiently handle different voltage levels and support the reliable transmission and distribution of electrical power across the grid.
The SF11-3000-3750/12.47/24.94/0.6 is a three-phase substation transformer designed according to the IEEE C57 standard for the US market. This transformer features a double high voltage design, with one high voltage rated at 24.94 kV and the other at 14.27 kV. The terminal box of the transformer is specifically designed to facilitate connection with both high and low voltage cabinets, resulting in its larger size.
The transformer incorporates the ONAN (Oil Natural Air Natural) and ONAF (Oil Natural Air Forced) cooling methods. It has a maximum capacity of 3000 kVA with self-cooling, allowing for a temperature rise of 65°C. When the fan is activated for air cooling, the maximum capacity increases to 3750 kVA.
For the liquid preservation system, the transformer can withstand a maximum positive pressure of 55 kPa (lbf/in²) and a maximum negative pressure of 0.1 kPa (lbf/in²). The tank is designed to withstand a vacuum filling pressure of 0.1 kPa (lbf/in²). The liquid level is maintained below the top surface of the highest manhole flange, with a variation of 200 mm (in) at 25°C for a 5 mm (in) change per 10°C variation in liquid temperature.
>44kV 3750 kVA Substation Transformer
44kV 3750 kVA Transformer
The SF11-3750/44/0.6 transformer is specifically designed for the Canadian market and manufactured in accordance with CSA (Canadian Standards Association) standards. It operates at a high voltage of 44 kV and a low voltage of 600V. The cooling method employed by this transformer is ONAN (Oil Natural Air Natural), which relies on the natural circulation of the insulating liquid and surrounding air for cooling purposes.
The insulating liquid used in this transformer is mineral oil, which provides effective insulation and heat dissipation properties. With a capacity of 3750 kVA, this transformer is capable of handling substantial power loads in various applications. It ensures efficient and reliable electrical power transmission and distribution in the Canadian market.
The following table is the specification of SF11-3750/44/0.6 transformer.
| HV | 44000V | No. OF TAP POSITION | 5 |
| LV | 600V | Vector Group | Dyn1 |
| Method | ONAN | Width(mm) | 2240 |
| Power rating | 3750 kVA | Length(mm) | 2650 |
| Winding material | COPPER | Height(mm) | 2700 |
| Impedence | 5.75% | On load loss | 37000W |
| Efficiency | 99.37% | No load loss | 3700W |
| Oil weight | 1800KG | Frequency | 60Hz |
| Total weight | 9000KG | Color | Grey 70 |
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