EN
Single-Phase Pad-Mounted Transformer
Single-Phase Pad-Mounted Transformer is configured to the purchaser's network, load and site requirements. The typical range below is for product-page reference; final guaranteed values are confirmed in the approved technical schedule.
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RATED VOLTAGE |
RATED CAPACITY |
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STANDARDS BASIS |
TYPICAL APPLICATION |
- Overview
- Recommended Products
- Loop or radial feed.
- dead-front construction.
- utility metering and protection options.
- mineral oil or ester fluid.
- Utility voltage system, kVA rating, phase and frequency.
- Radial/loop feed, live-front/dead-front and bushing arrangement.
- Secondary voltage, cabinet layout, fusing/protection and efficiency rule.
- Utility specification, finish, accessories and destination.
- Loop or radial feed.
- dead-front construction.
- utility metering and protection options.
- mineral oil or ester fluid.
- North American-style underground or overhead distribution.
- Residential, commercial and utility networks.
- Data-center, BESS and renewable distribution projects where specified.
General Overview：
Our floor-mounted (Pad-mounted) transformers are fully integrated, tamper-resistant power distribution solutions. These units are designed for underground power systems where space is limited and safety is paramount. The compact, weather-resistant enclosure houses the transformer, high-voltage switching, and low-voltage protection in a single, secure unit.
Single-phase vs. Three-phase：
A. Single-phase Pad-mounted
Designed for low-density residential loads and rural electrification. They feature a smaller footprint and simplified installation for serving a smaller number of consumers.
B. Three-phase Pad-mounted
Designed for high-density commercial centers, industrial parks, and multi-family residential complexes. They provide a balanced power supply and higher capacity for heavy equipment and centralized loads.
Technical Specifications ：
| Item | Specification |
|---|---|
| Single-phase Specs | - Capacity: 10kVA - 167kVA - Voltage: Up to 34.5kV |
| Three-phase Specs | - Capacity: 75kVA - 5000kVA - Voltage: Up to 35kV |
Application & Selection Logic：
✅Use Three-phase when: Supplying power to shopping malls, large office buildings, or industrial equipment that requires balanced 3-phase power.
Appurtenance
Inquiry
Please provide the following information so the product selection and quotation can be prepared accurately:
Overview
General Product Overview
The single-phase pad-mounted transformer is a compact, sealed unit for residential and light-commercial underground distribution. Primary and secondary interfaces, feed arrangement, protection, tank construction and corrosion protection are matched to local utility practice.
Main Technical Specifications
Parameter |
Typical range / configuration basis |
Rated voltage |
Up to 34.5 kV class |
Rated capacity |
10-250 kVA |
Frequency |
50 Hz or 60 Hz; utility-specific where applicable |
Standards basis |
IEEE C57.12.38; CSA where specified |
Feed arrangement |
Radial or loop feed where applicable |
Primary interface |
Dead-front or live-front bushings to utility practice |
Protection |
Bayonet fuse, backup fuse, arrester or CSP package as required |
Tank and finish |
Sealed tank with outdoor corrosion-protection system |
Utility Interface and Protection Options
Utility interfaces define the product. Bushing wells/inserts, feed arrangement, fusing, arresters, secondary terminals, cabinet dimensions, locking provisions and coating system are configured to the destination utility's practice.
Main Applications
Residential developments and single-phase underground utility networks.
Engineering Support
Apex supports requirement review, product selection, drawing and interface coordination, manufacturing follow-up, inspection/test-document coordination, export packing and delivery planning. The final scope is defined in the quotation and approved technical agreement.
Recommended Products
Three-Phase Pad-Mounted Transformer | Single-Phase Pole-Mounted Transformer | Medium-Voltage Ring Main Unit
