Built for the Elements, Trusted for Performance: The Single Phase Pole Mounted Transformer.
01 General
1.1 Project Description
167 kVA single phase pole mounted transformer was delivered to Canada in 2025. The rated power of the transformer is 167 kVA with ONAN cooling. The high voltage is 2.4 kV, the low voltage is 0.347 kV, they formed a vector group of Ii6.
The modern single phase pole mounted transformer, integrating an Internal Fault Detector (IFD) and Anti-Tracking insulation, is engineered for superior reliability in critical applications such as residential power distribution, rural electrification, and industrial feeder lines. The IFD proactively monitors for internal faults to enable predictive maintenance and prevent failures, while the Anti-Tracking system robustly resists surface tracking caused by coastal salt fog, industrial pollution, or humid environments. This synergy of diagnostics and durability ensures enhanced safety and minimizes service interruptions for utility customers.
1.2 Technical Specification
167 kVA single phase pole mounted transformer specifications type and data sheet
| Delivered to | Canada |
| Year | 2025 |
| Type | Pole mounted transformer |
| Standard | CSA C2.2-06 |
| Rated Power | 167 kVA |
| Frequency | 60HZ |
| Phase | 1 |
| Polarity | Additive |
| Cooling Type | ONAN |
| Primary Voltage | 2.4 kV |
| Secondary Voltage | 0.347 kV |
| Winding Material | aluminum |
| Vector Group | Ii6 |
| Impedance | 2.3%(±10%) |
| Tap Changer | N/A |
| No Load Loss | 0.096 kW |
| On Load Loss | 1.85 kW |
1.3 Drawings
167 kVA single phase pole mounted transformer diagram drawing and size.
02 Manufacturing
2.1 Core
| Its core is constructed using a continuous wound design from high-grade silicon steel. This innovative structure creates an optimal magnetic path with minimal gaps, leading to superior energy efficiency and quieter, more reliable operation. |  |
2.2 Winding
 | It employs an aluminum foil-wound design for the low-voltage side to provide superior short-circuit strength and a layered aluminum wire-wound design for the high-voltage side for optimal voltage distribution. This hybrid winding approach, using aluminum, achieves an optimal balance of reliability, cost-efficiency, and thermal performance. |
2.3 Tank
| The tank is constructed from high-grade stainless steel, providing exceptional corrosion resistance and eliminating the need for painting. Its hermetically sealed design, combined with corrugated fins, ensures robust protection against harsh environments and efficient, maintenance-free heat dissipation throughout an extended service life. |  |
2.4 Final Assembly
 | Final assembly represents the precision integration of all major components. The core-winding assembly is sealed within the corrosion-resistant stainless steel tank, which is vacuum-filled with dielectric fluid to guarantee superior dielectric strength and cooling. The attachment of high-voltage bushings, accessories, and rigorous final testing validate complete performance, resulting in a durable and maintenance-efficient transformer optimized for overhead distribution. |
03 Testing
The single phase pole mounted transformer (model: 167kVA-2.4/0.347kV) by SCOTECH complied with CSA C2.2-06(R2022) and CSA C802.1-13(R2022) standards. Routine tests included winding resistance measurement (HV: 0.09067Ω, LV: 1.919mΩ at 32℃ and 60% relative humidity), ratio test (deviation: 0.04% ≤ 0.5%, vector group: Ii6), polarity test (Additive, meeting requirements), no-load test (loss: 96W within +15% tolerance, current: 0.36%), load test (loss at 85℃: 1165W, total loss: 1261W, short-circuit impedance: 2.17% within ±10% tolerance, efficiency: 99.57% ≥ 98.63%), applied voltage test (LV: 10kV for 60s, no voltage collapse), induced voltage withstand test (0.694kV, 150Hz for 48s, no voltage collapse), insulation resistance measurement (LV-HV to ground: 29.1GΩ), 20kPa pressure leak test (24h, no leakage or damage), and oil test (dielectric strength: 58.4kV, moisture content: 9.5mg/kg, etc.).
| 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: Ii6 | 0.04 | Pass |
| 3 | Polarity tests | / | Additive | Additive | Pass |
| 4 | No-load losses and excitation current | % | I0 :: provide measured value | 0.36 | Pass |
| kW | P0: provide measured value | 0.095 | |||
| / | the tolerance for no load loss is +15% | / | |||
| 5 | Load losses , impedance voltage,total losses and efficiency | / | t:85℃ the tolerance for impedance is ±10% the tolerance for total load loss is +8% | / | Pass |
| % | Z%: measured value | 2.17 | |||
| kW | Pk: measured value | 1.165 | |||
| kW | Pt: measured value | 1.261 | |||
| % | Efficiency not less than 98.63% | 99.57 | |||
| 6 | Applied Voltage Test | / | LV: 10kV 60s | No collapse of the test voltage occurs | Pass |
| 7 | Induced Voltage Withstand Test | / | Applied voltage (KV):0.694 | No collapse of the test voltage occurs | Pass |
| Duration(s):48 | |||||
| Frequency (HZ): 150 | |||||
| 8 | Insulation Resistance Measurement | GΩ | LV-HV to Ground | 29.1 | Pass |
| 9 | Leakage Test | / | Applied pressure：20kPA | No leakage and no Damage | Pass |
| Duration：12h | |||||
| 10 | Oil Test | kV | Dielectric Strength | 58.4 | Pass |
| mg/kg | Moisture Content | 9.5 | |||
| % | Dissipation Factor | 0.00194 | |||
| mg/kg | Furan Analysis | 0.03 | |||
| / | Gas Chromatography Analysis | /
|
04 Packing and Shipping
4.1 Packing
| For packaging, the single phase pole mounted transformer is securely housed in a durable plywood wooden box. Before being placed into the box, the transformer is covered with a layer of plastic film to shield against humidity and contaminants. The wooden box is equipped with metal edge reinforcements for better durability, and essential handling instructions and warning signs are clearly printed on its surface. Additionally, it is set on a pallet, facilitating smooth logistics operations and ensuring the transformer stays in good condition during shipping and storage. |  |
4.2 Shipping
 | Under CIF Montreal terms, the single phase pole mounted transformer are transported via ocean freight. The seller arranges and covers the cost of sea transportation to the Port of Montreal, procures marine cargo insurance to safeguard against potential transit risks, and ensures the transformers are properly handled and loaded onto the vessel for safe delivery to the destination port. |
05 Site And Summary
From its robust stainless steel construction to its highly efficient wound core and windings, every aspect of this single phase pole mounted transformer is designed for one purpose: unmatched reliability in the field. It is the smart, sustainable choice for utilities seeking to enhance grid resilience, reduce operational costs, and provide exceptional service to their customers. Ready to power the future with confidence? Contact us today to discover how this transformer can be integrated into your network.
