

ZISHENG Single-Phase Padmount Transformers are engineered to efficiently convert underground single-phase power to homes, commercial buildings, and urban public spaces. Featuring a tamper-proof, low-profile design and compact footprint, these units excel in space-constrained environments while adhering to the highest industry standards. With a capacity range of 5 kVA to 250 kVA and voltage rating up to 19.9 kV (150 kV BIL), they deliver reliable, DOE 2016-compliant efficiency for utility and non-utility applications in commercial, industrial, and residential sectors.
Zisheng are a professional 19+ years manufacturer in producing Oil-Immersed Transformers, Compact Substation, Pad Mounted Transformers, Pole Mounted Transformers and Dry Type Transformers. We own the certificates of ISO/CE/IEC 60076 and TUV Rheinland.
Transformers undergo rigorous FAT and type testing, support voltage/capacity customization. Welcome to consult for Catalog and Product. you can contact us at email info@bdzstransformer.com.

The Single Phase American-Type Pad Mounted Transformer is a compact and fully enclosed power distribution solution designed for underground distribution systems in residential, commercial, industrial, and renewable energy applications. The transformer integrates high-voltage components, low-voltage components, protective devices, and transformer units into a tamper-resistant steel enclosure, providing safe, reliable, and efficient power distribution.
Designed according to ANSI, IEEE, and IEC standards, the transformer features excellent insulation performance, strong overload capability, low energy loss, and stable operation in harsh outdoor environments. The compact structure minimizes installation space and simplifies maintenance, making it an ideal choice for urban power grids, residential communities, commercial centers, solar projects, and infrastructure construction.
With flexible customization options for voltage ratings, capacity, protection configuration, and enclosure materials, the Single Phase American-Type Pad Mounted Transformer can meet various project and utility requirements worldwide.
The Single Phase American-Type Pad Mounted Transformer is manufactured using high-quality silicon steel cores, premium copper or aluminum windings, and durable insulating materials to ensure high efficiency and long service life. The sealed tank design effectively prevents moisture intrusion and environmental contamination, improving operational reliability and reducing maintenance requirements.
The transformer adopts a dead-front or live-front design with integrated fuse protection and lightning arresters for enhanced operational safety. Its compact pad-mounted structure supports easy installation in limited spaces while providing excellent resistance against corrosion, humidity, high temperature, and severe weather conditions.
Widely used in residential distribution networks, utility projects, renewable energy systems, and commercial power supply systems, the transformer delivers efficient and stable power distribution with low noise and energy-saving performance.
The fully enclosed tamper-resistant cabinet design improves operational safety, reduces installation space, and is suitable for underground power distribution systems.
Manufactured with high-quality core materials and low-loss winding technology, the transformer effectively reduces no-load and load losses, improving overall energy efficiency.
The sealed structure provides excellent moisture resistance, corrosion resistance, and stable operation in harsh environments including high humidity and high temperature areas.
Voltage rating, transformer capacity, protection configuration, enclosure material, and cooling method can be customized according to different utility and project requirements.
| Item | Specification |
|---|---|
| Product Name | Single Phase American-Type Pad Mounted Transformer |
| Phase | Single Phase |
| Rated Capacity | 25kVA – 500kVA |
| Primary Voltage | 2.4kV / 4.16kV / 7.2kV / 13.8kV / Customized |
| Secondary Voltage | 120V / 240V / 277V / Customized |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN |
| Insulation Medium | Mineral Oil / FR3 Fluid |
| Vector Group | Customized |
| Tap Changer | Off-Circuit Tap Changer |
| Protection Device | Bay-O-Net Fuse / Current Limiting Fuse / Lightning Arrester |
| Enclosure Type | Tamper-Resistant Cabinet |
| Protection Level | IP43 / Customized |
| Winding Material | Copper / Aluminum |
| Temperature Rise | 55°C / 65°C |
| Standards | ANSI / IEEE / IEC |
| Installation Type | Outdoor Pad Mounted |
| Application | Residential Areas, Commercial Buildings, Solar Projects, Utility Distribution Networks |
| Customization | Available |
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