45 kva transformer dimensions

The dimensions of a 45 kVA transformer vary depending on the **model, type (dry-type/oil-cooled), protection class, and manufacturer**. 

The following are common dimension references:

I. Typical Dimension Parameters

1. Isolation Transformer (3-phase, 415V to 208V, IP24 protection)

- **Aluminum Wire Winding**

  - **Open Type**: 500×330×480 mm (Length×Width×Height), installation dimension 340×190 mm

  - **Protective Type**: 455×660×710 mm

- **Copper Wire Winding**

  - **Open Type**: 440×350×420 mm, installation dimension 300×200 mm

  - **Protective Type**: 420×610×610 mm

2. Dry-Type Distribution Transformer (600V to 208Y/120V)

- **Jefferson Model 424-7219-881**:

  32×27×21 inches (approximately 813×686×533 mm), with a weight of approximately 2000 pounds

3. Low-Voltage Distribution Transformer (480V to 208Y/120V, NEMA 3R protection)

- **wankong Transformers**:

  26×21.5×28.5 inches (approximately 660×546×724 mm), with a weight of 420 pounds

  (Source: www.transformerandswitchgear.com)

4. Rental-Type Transformer (480V to 208V, with circuit breaker)

- **Cat Energy Rental**:

  32×44×38 inches (approximately 813×1118×965 mm), with a weight of 560 pounds

  (Source: www.transformerandswitchgear.com)

 II. Factors Affecting Dimensions

1. **Protection Class**:

   - The open type (without a casing) has the smallest dimensions, and the protective type (such as IP24, NEMA 3R) requires additional space.

2. **Winding Material**:

   - Copper wire transformers are usually more compact than aluminum wire ones (for example, the ATO copper wire model is 10% to 

15% smaller than the aluminum wire model).

3. **Additional Functions**:

   - Models with wheels, circuit breakers, or cooling fans are larger in size (for example, the Aggreko rental model is 5×5×5 feet, approximately 1.5m³).

III. Selection Suggestions

- **Industrial Applications**: Give priority to referring to the dimensions of the protective type (such as 600 to 700mm in height) to ensure 

heat dissipation and mechanical protection.

- **Indoor Installation**: The open-type transformer saves more space, but ventilation gaps need to be reserved (it is recommended to 

leave a space of 200mm around it).

- **Rental Scenarios**: Pay attention to the transportation dimensions (for example, for the Cat model, the width of the forklift handling 

passage needs to be considered).

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

 such as the voltage level and protection requirements to confirm with the supplier.