Transforming the future of power—single-phase pole-mounted solutions for unparalleled efficiency.
01 General
1.1 Project Description
This 167kVA single phase pole mounted transformer was exported to Guyana in July, 2024. The rated power of the cooper pad mounted transformer is 167 kVA, the primary voltage is 13.8 kV and secondary voltage is 0.24/0.12 kV. In distributed power distribution network, cooper pad mounted transformer as a distribution transformer has great advantages, it can reduce the length of low-voltage distribution line, reduce line loss, improve the quality of power supply. High efficiency and energy saving coil core structure design is adopted, the transformer is characterized by the use of column mounted suspension, small size, small infrastructure investment, reduce low-voltage power supply radius, can reduce the line loss more than 60%. The transformer adopts fully sealed structure, strong overload capacity, high reliability in continuous operation and simple maintenance. It is suitable for rural power grids, remote mountainous areas, scattered villages, agricultural production, lighting and power consumption, and can also be used for energy-saving transformation of pillar distribution lines in railways and urban power grids.
The 167kVA pole mounted transformer was designed with advanced technology and adopts high quality material and components which result in reliable quality and long operation time.
We ensure that each one of our delivered units has undergone rigorous full acceptance testing. We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services, our products are now operating in more than 50 counties in the world. We aim to be your most reliable supplier as well as your best partner in business!
1.2 Technical Specification
50 kVA cooper pad mounted transformer specification and data sheet
| Delivered to | Guyana |
| Year | 2024 |
| Type | Pole Mounted Transformer |
| Standard | IEEE C57.12.20 |
| Rated Power | 167KVA |
| Frequency | 60HZ |
| Phase | 1 |
| Cooling Type | ONAN |
| Vector Group | li0 |
| Primary Voltage | 13.8KV |
| Secondary Voltage | 0.24/0.12 KV |
| Winding Material | Copper |
| Polarity | Subtractive |
| Impedance | 2.5% |
| Tolerance | ±10% |
| Efficiency | 99.05% |
| Tapping Range | ±2*2.5% with NLTC |
| Liquid insulant | Mineral Oil |
| No Load Loss | 0.395KW |
| On Load Loss | 1.790KW |
| Accessories | Standard Configuration |
1.3 Drawings
167 kVA cooper pad mounted transformer diagram drawing and size.
02 Manufacturing
2.1 Core
cooper pad mounted transformer use a coil core structure, the coil core is made of silicon steel sheet with high magnetic permeability, which allows it to carry a high magnetic flux density in a small volume, thereby improving the efficiency of the equipment. The coil core is designed to reduce iron loss (including hysteresis loss and eddy current loss), and the coil core manufacturing process allows for greater design flexibility, which can be adjusted to the needs of the specific application. For example, by changing the geometry, material or winding of the core, the performance of the equipment can be optimized to meet different technical requirements. The design of the coil core reduces electromagnetic noise, which is particularly important for high frequency applications. Reducing noise not only improves the working environment comfort of the equipment, but also improves the overall operating stability of the equipment. Because the structural design of the coil core allows for better air flow and heat dissipation, it can dissipate heat more efficiently in high-power applications, thereby avoiding overheating problems and improving the reliability and service life of the equipment.
2.2 Winding
 | Because of its planarization design, foil winding can effectively reduce electromagnetic interference (EMI) and electromagnetic noise. Its structure makes the magnetic field distribution more uniform and reduces the electromagnetic interference inside the winding. Compared with traditional coil winding, foil winding can effectively reduce resistance and energy loss. The wide surface of the foil provides a large current conduction area and reduces the resistance of the winding. Compared with traditional coil winding, foil winding can effectively reduce resistance and energy loss. The wide surface of the foil provides a large current conduction area and reduces the resistance of the winding. The foil winding design can reduce the inductance value of the winding, which is particularly important for some high-frequency applications. At the same time, foil winding can withstand higher current load.· |
2.3 Tank
| The tank design of single-phase cooper pad mounted transformer is usually compact and suitable for use in space-limited environments. Its column structure saves space while providing adequate insulation and heat dissipation. The oil tank and its internal insulating oil have good high temperature resistance and can maintain stable performance during the operation of the transformer. Transformers are designed with the heat resistance of the oil in mind, ensuring that it does not break down or lose its insulating ability under high temperature conditions. |  |
2.4 Final Assembly
03 Testing
| No. | Test Item | Unit | Acceptance Values | Measured Values | Conclusion |
| 1 | Resistance Measurements | / | / | / | Pass |
| 2 | Ratio Tests | / | The deviation of voltage ratio on the principal tapping: ≤0.5% Connection symbol: Ii0 | -0.02 | Pass |
| 3 | Polarity tests | / | Subtractive | Subtractive | Pass |
| 4 | No-load losses and excitation current | % kW | I0 : provide measured value P0: provide measured value the tolerance for no load loss is +10% | 0.62 0.389 | Pass |
| 5 | Load losses, impedance voltage, total losses and efficiency | / kW kW | t: 85℃ Z%: measured value Pk: measured value Pt: measured value the tolerance for impedance is ±10% the tolerance for total load loss is +6% | 2.73 1.788 2.177 99.06 | Pass |
| 6 | Applied Voltage Test | / | HV: 34KV 60s LV: 10kV 60s | No collapse of the test voltage occurs | Pass |
| 7 | Induced Voltage Withstand Test | / | Applied voltage (KV): 2 Ur Duration(s): 48 Frequency (HZ): 150 | No collapse of the test voltage occurs | Pass |
| 8 | Insulation Resistance Measurement | GΩ | HV-LV to Ground LV-HV to Ground HV&LV to Ground | 83.9 69.4 68.1 | / |
| 9 | Leakage Test | / | Applied pressure: 20kPA Duration: 12h | No leakage and No Damage | Pass |
| 10 | Oil Dielectric Test | kV | ≥45 | 53.23 | Pass |
04 Packing and Shipping
05 Site And Summary
Thank you for your interest and support in our single-phase pole-mounted transformer! With its efficient energy conversion, excellent safety features, and stable performance, this product is widely applicable to power distribution systems and industrial fields. We always uphold the principle of quality first and service excellence, striving to provide you with reliable, eco-friendly, and efficient power solutions. If you have any needs or questions, please feel free to contact us. We look forward to working with you to create a brighter future together!
