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Single phase Pad Mounted
A single-phase pad-mounted transformer is a compact, outdoor distribution transformer designed to convert medium-voltage grid power into low-voltage electrical power for residential, commercial, industrial, agricultural, and infrastructure applications.
The BDACEE Single-Phase Pad-Mounted Transformer is engineered as a compact, integrated outdoor distribution solution. Its hermetically sealed metal enclosure, oil-immersed construction, and ONAN cooling system provide a practical solution for underground and pad-mounted electrical distribution networks where reliability, compact installation, low maintenance, and environmental adaptability are important.
The transformer is designed for applications in urban and rural power distribution networks, industrial and agricultural power systems, and industrial and mining enterprises. Its structure and accessories can be customized according to customer requirements, while the catalog identifies IEEE and CSA as the applicable performance standards for this product family.
For North American applications, the catalog specifically references IEEE C57.12.38 for single-phase pad-mounted units up to 250 kVA, with high-voltage ratings up to 34.5 kV GrdY.
Compact Outdoor Design
The transformer uses a compact construction intended for outdoor distribution applications. Its relatively compact design provides advantages where installation space is limited, including:
- Residential developments
- Commercial areas
- Urban distribution networks
- Industrial facilities
- Agricultural sites
- Infrastructure projects
- Mining applications
- Rural distribution systems
Oil-Immersed Transformer Construction
The single-phase pad-mounted transformer is an oil-immersed distribution transformer. Transformer oil provides insulation between energized components and also transfers heat away from the transformer core and windings. The product uses ONAN cooling, meaning:
ONAN = Oil Natural, Ai Natural
Under normal operation, transformer oil circulates naturally through the transformer, while heat is dissipated to the surrounding air through natural convection. This cooling arrangement is widely suited to distribution-transformer applications where a simple, reliable cooling system is preferred.
Hermetically Sealed Metal Enclosure
The transformer is designed with a hermetically sealed metal enclosure. This construction provides a protected housing for the transformer assembly and contributes to the product's suitability for outdoor installation. The enclosure helps protect internal transformer components from normal outdoor environmental exposure and supports the manufacturer's positioning of the unit as a compact, low-maintenance outdoor distribution solution.
IEEE and CSA Standards
as applicable standards/performance bases. IEEE C57.12.38 for single-phase pad-mounted units up to 250 kVA, with HV up to 34.5 kV GrdY. For export projects, the exact applicable standard should always be confirmed against:
- Country requirements
- Utility specifications
- Project specifications
- Transformer voltage class
- Rated capacity
- Installation environment
- Required certification
- Customer technical specification
Exact rated kVA, primary voltage, secondary voltage, frequency, connection arrangement, vector/phase relationship, impedance, temperature rise, insulation levels, dimensions, weight, losses, accessories and protection configuration must be confirmed from the factory technical datasheet for the specific transformer model.
Transformer Construction
- Transformer type: Oil-immersed
- Installation: Outdoor pad-mounted
- Cooling: ONAN
- Enclosure: Hermetically sealed metal enclosure
- Core material: To approved factory design
- Winding material: To approved factory design
- Tank/enclosure: Outdoor-rated metal construction
- Finish/coating: Project-specific
- Accessories: Project-specific
