Single-Phase Pole Mounted Transformer
Product Overview
A type of distribution transformer mounted horizontally on utility poles (wood or concrete) and connected to overhead cables. Its core function is to step down high-voltage electricity from distribution lines to low-voltage levels for end users, serving as the “final voltage reduction link” in power distribution systems. It is also known as a “breadbox transformer” for its compact, box-like structure.
Core Specifications:
Rated capacity: 5kVA – 500kVA (key models: 5/10/15/25/37.5/50/75/100/167kVA).
Voltage parameters: HV options include 34.5kV/19.92kV, 13.8kV/7.9kV, 13.2kV/7.6kV, 12.47kV/7.2kV (customizable); LV options: 120-240V, 240-480V, 347V, 600V (customizable).
Frequency: 50Hz/60Hz.
Product type: Oil-immersed, fully sealed structure; cooling method (ONAN for partial models).
Efficiency standards: Complies with DOE and CSA , with efficiency ranging from 98.47% to 99.33%.
Core Design: Adopts high-efficiency energy-saving coil core structure, focusing on reducing line losses and optimizing power supply quality.
Advantage
Energy-Saving & High Efficiency Cuts low-voltage line loss by over 60%; reduces low-voltage power supply radius and distribution line length, improving power supply quality.
Compact & Cost-Effective Small size, low infrastructure investment, suitable for space-constrained or remote areas.
Reliable & Low-Maintenance Fully sealed structure, strong overload capacity, high continuous operation reliability, and simple maintenance.
Safety Compliance Meets CE, UL, ISO, IEC, IEEE, KEMA standards, ensuring stable performance.
Technical Parameter
| Rated Capacity (kVA) | HV (Customizable Options) | LV (Customizable Options) | Efficiency (%) – DOE (2016) | Efficiency (%) – CSA (2023) |
| 5 | 34.5kV/19.92kV, 13.8kV/7.9kV, etc. | 120-240V, 240-480V, etc. | 98.58 | 98.47 |
| 10 | Same as above | Same as above | 98.70 | 98.60 |
| 15 | Same as above | Same as above | 98.82 | 98.73 |
| 25 | Same as above | Same as above | 98.95 | 98.87 |
| 37.5 | Same as above | Same as above | 99.05 | 98.97 |
| 50 | Same as above | Same as above | 99.11 | 99.04 |
| 75 | Same as above | Same as above | 99.19 | 99.13 |
| 100 | Same as above | Same as above | 99.25 | 99.19 |
| 167 | Same as above | Same as above | 99.33 | 99.28 |
Application
Ideal for scenarios requiring distributed, space-saving power supply, including:
Rural & remote areas: Rural power grids, remote mountainous areas, scattered villages (agricultural production, lighting).
Infrastructure: Energy-saving renovations for railways and urban power grids.
Key sectors: Power systems, auxiliary power for transportation, and small-scale rural/remote industrial power needs.


