For customers who need such transformers for the SCB13 product, please contact our company and provide us with the specific parameters you require. We will offer you a quotation. Our products are all manufactured according to standards. We are a well-known manufacturer in Jiangsu, China.

I. Detailed Explanation of the SCB13 Transformer Model Meaning

The model of a transformer is usually composed of a series of letters and numbers, each representing its specific technical characteristics. Let's take the model SCB13-1000/10 as an example for breakdown:

S

Meaning: Three-phase

Explanation: Indicates that this is a three-phase transformer. If it were a single-phase transformer, it would be represented by the letter D.

C

Meaning: Epoxy resin cast

Explanation: Indicates that the coils (windings) of this transformer are vacuum-cast and molded with epoxy resin. This is the most common insulation form for dry-type transformers, offering advantages such as moisture resistance, flame retardancy, maintenance-free operation, high mechanical strength, and long service life.

B

Meaning: Foil-wound

Explanation: Indicates that the low-voltage winding is made of copper or aluminum foil. The alternative is wire-wound (usually indicated by a letter but often omitted). Foil-winding offers advantages like strong short-circuit resistance, excellent heat dissipation, and compact structure.

13

Meaning: Performance level code or Loss level code

Explanation: This is the most critical number in the model. "13" indicates that the no-load loss and load loss levels of this transformer meet the "13" energy efficiency level specified in the 《GB 20052-2020 Limits of Energy Efficiency and Energy Efficiency Grades for Power Transformers》 standard. The smaller the number, the lower the loss and the higher the energy efficiency level. SCB13 is currently the most widely used second-level energy efficiency dry-type transformer on the market (SCB14 is first-level efficiency, SCB12 is third-level efficiency).

1000

Meaning: Rated Capacity

Explanation: Indicates that the rated apparent power of this transformer is 1000 kVA (kilovolt-ampere). Common capacities include 50, 100, 200, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500 kVA, etc.

10

Meaning: High Voltage Rating

Explanation: Indicates that the rated voltage level of the high-voltage winding of this transformer is 10 kV (kilovolts). Other common levels include 6kV and 35kV.

Summary:

SCB13-1000/10 denotes a three-phase, epoxy resin cast insulated, low-voltage foil-wound, energy efficiency level 13 (second-level efficiency), rated capacity 1000kVA, high voltage rating 10kV dry-type power transformer.

II. SCB13 Transformer Parameter Table

The following is a technical parameter table for a typical SCB13 series dry-type transformer. Please note that specific parameters (such as dimensions and weight) may vary slightly between different manufacturers, but the core electrical performance parameters (losses, impedance, etc.) must comply with national standards.

Parameter Interpretation

No-load Loss (Po): The power consumed by the primary winding when the secondary winding is open-circuited and rated voltage is applied to the primary. Commonly known as "iron loss," it is mainly consumed by hysteresis and eddy currents in the core. SCB13 significantly reduces no-load loss compared to older models (e.g., SCB10/11), which is core to its energy savings.

Load Loss (Pk): The power consumed when the secondary winding is short-circuited and rated current flows through the primary winding. Commonly known as "copper loss," it is mainly consumed by the resistance of the windings.

No-load Current (Io%): The current flowing in the primary winding when the secondary is open-circuited, expressed as a percentage of the rated current. A smaller value is better, indicating less excitation power required to establish the magnetic field.

Short-circuit Impedance (Uk%): Also known as impedance voltage, it is an important parameter affecting short-circuit current magnitude and voltage regulation. It is typically 4% or 6% for 10kV distribution transformers.

Vector Group: Dyn11 is the most common configuration. It indicates that the high voltage (HV) winding is delta-connected, and the low voltage (LV) winding is star-connected with a neutral point brought out. The "11" indicates that the LV voltage phasor lags the HV voltage phasor by 330 degrees (i.e., the 11 o'clock position). This connection is beneficial for harmonic suppression and provides a stable neutral point.

III. Important Notes

1. Energy Efficiency Standards: SCB13 corresponds to the second-level energy efficiency in the 2020 national energy efficiency standards. The latest standards have now introduced even higher efficiency levels, such as SCB14 (first-level efficiency) and SCB18 (super first-level efficiency). For new construction or renovation projects, it is recommended to prioritize higher-efficiency models like SCB14 or SCB18. Although the initial investment is slightly higher, the long-term savings on electricity bills are substantial.

2. Selection: When selecting a transformer, in addition to capacity and voltage, factors such as the installation environment (indoor/outdoor), protection rating (IP20, IP23, etc.), cooling method (AN/AF), and whether an enclosure is needed must be considered.

3. Quotation: Final technical parameters and prices should be based on the formal quotation and technical agreement from the specific manufacturer.