112.5 kva transformer dimensions

The dimensions of a 112.5 kVA transformer vary depending on the **type, voltage level, winding material, and 

manufacturer**. The following are the dimension references for common models:

 I. Typical Dimension Parameters

1. Dry-Type Distribution Transformer (Three-Phase)

- **Jefferson 423-7255-805 (Copper Wire Winding)**

  - **Dimensions**: 38×29×23 inches (965×737×584 mm)

  - **Weight**: 885 pounds (401 kg)

  - **Voltage**: 480VΔ to 480Y/277V

  - **Protection Class**: Ventilated type (without a casing)

- **Jefferson 423-925F-015 (Aluminum Wire Winding)**

  - **Dimensions**: 38×29×23 inches (the same as above)

  - **Weight**: 785 pounds (356 kg)

  - **Voltage**: 480VΔ to 380Y/220V

2. Isolation Transformer (Square D 112T3HF)

- **Dimensions**: 32×28×44 inches (813×711×1118 mm)

- **Weight**: 1020 pounds (463 kg)

- **Voltage**: 480V to 208Y/120V

- **Protection Class**: Type 2 (Indoor protection)

3. Compact Insulated Transformer (Square D 112T6HCT)

- **Dimensions**: 30×24×37 inches (762×610×940 mm)

- **Voltage**: 480V to 240V

- **Application**: Industrial power distribution

4. Rental-Type Transformer (Cat Energy Rental)

- **Dimensions**: 36×48×48.5 inches (914×1219×1232 mm)

- **Weight**: 1000 pounds (454 kg)

- **Features**: With a casing and a transportation base, suitable for temporary power supply

 II. Factors Affecting Dimensions

1. **Winding Material**:

   - The copper wire transformer (such as Jefferson 423-7255-805) is about 10% heavier than the aluminum wire model, 

but the dimensions are similar.

2. **Protection Class**:

   - The ventilated type (without a casing) has the smallest dimensions. For Type 2 protection, the thickness of the casing 

needs to be increased (for example, the height of Square D 112T3HF increases by 21%).

3. **Voltage Level**:

   - The high-voltage winding (such as 13.2kV) requires a larger insulation distance, and the dimensions are 20% to 30% 

larger than those of the low-voltage model (480V).

III. Selection Suggestions

- **Indoor Industrial Applications**: Give priority to choosing the **dry-type ventilated model** (such as Jefferson 38×29×23

 inches), and a heat dissipation space of 200mm needs to be reserved.

- **Commercial Buildings**: The **isolation transformer** (such as Square D 32×28×44 inches) supports multi-voltage output.

 Pay attention to the distance between the mounting holes (usually 28×24 inches).

- **Temporary Rental**: Pay attention to the **transportation dimensions** (for example, the Cat model requires the width of 

the forklift passage to be ≥ 1.2 meters), and the weight needs to match the load-bearing capacity.

**Note**: The specific dimensions should be subject to the **manufacturer's model manual**. It is recommended to provide the

 following parameters when consulting the supplier:

- Input/Output Voltage

- Number of Phases (Single-Phase/Three-Phase)

- Protection Class (NEMA/IP)

- Additional Functions (Circuit Breaker, Wheels, etc.)