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25kVA 6.9kV Single Phase Pole Mounted Transformer for Overhead Distribution
| Brand Name: | WINLEY |
| Model Number: | D11-M-25/6.9 |
| MOQ: | 1unit |
| Price: | $1000-$100000 |
| Packaging Details: | Plywood case |
| Payment Terms: | T/T |
Winley’s 25kVA single-phase pole-mounted transformer steps 6.9kV overhead power down to 120/240V for residential, rural, and local distribution. Pole mounting saves ground space, while the outdoor design is built for year-round service.
Need a different spec or a replacement unit? We can custom-build to your requirements. Send us your utility spec or nameplate for a quick quote. MOQ: 1 unit. Quote time: 1–2 days.
| Specification | Data | Specification | Data |
|---|---|---|---|
| Rated Capacity | 25kVA | Phase | Single Phase |
| Primary Voltage | 6.9kV | Secondary Voltage | 120/240V |
| Frequency | 60Hz | Primary Voltage Class | 8.7kV Class |
| Primary BIL | 95kV | Secondary BIL | 30kV |
| Temperature Rise | 65°C | Insulation Class | Class E |
| Specification | Data | Specification | Data |
|---|---|---|---|
| Transformer Type | Conventional Pole Mounted | Cooling | ONAN, Self-Cooled |
| Winding Material | Copper | Insulating Fluid | Type II Mineral Oil, Non-PCB |
| Ambient Operating Range | -40°C to +40°C | Dimensions | 22.0in × 25.0in × 33.4in |
| Sound Level | 48dBA | Efficiency Requirement | DOE 2016 |
| Specification | Data | Specification | Data |
|---|---|---|---|
| No-Load Loss | 60.7W | Load Loss at 85°C | 257.9W |
| No-Load Current | 0.29% | Impedance | 2.16% |
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Cold-Climate Outdoor Distribution
Engineered for a -40°C to +40°C ambient temperature range, this transformer provides dependable, year-round operation in cold environments. The weather-resistant epoxy coating and stainless-steel hardware deliver long-term protection and lower maintenance needs.
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Pole-Mounted Transformer Replacement
Simplifies equipment retrofits. By reviewing your existing transformer nameplate, mounting dimensions, and protection features, we provide a precise mechanical and electrical match to minimize installation risks and downtime.
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Outdoor Overhead Distribution
Mounts directly onto utility poles to seamlessly connect with existing overhead distribution lines. The durable tank construction supports prolonged outdoor exposure without occupying valuable ground-level footprint.
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Local Single-Phase Distribution
The 25kVA rating and 120/240V secondary voltage offer a practical supply point for localized power demands, helping utilities serve residential, rural, or distributed loads directly from the overhead grid.
- External Five-Position Tap Changer
Easy voltage adjustment from outside the tank, with no need to open it. - Double Hanger Brackets
Secure pole mounting without taking up ground space. - Tin-Plated Terminals
Flexible cable connections for easier on-site installation. - Grounded X2 Neutral
Ready for standard 120/240V service connections. - Lightning Arrester Mounting Provisions
Pre-arranged mounting points make adding lightning protection quick and easy. Need to know whether your project requires a conventional or CSP design? See Conventional vs. CSP Pole-Mounted Transformers. - Automatic Pressure Relief Device
Automatically releases excess internal pressure to help protect the transformer. - Non-PCB Mineral Oil
Uses non-PCB insulating oil for standard transformer insulation and cooling. - Oil Drain & Sampling Valve
Makes oil sampling and draining easier during routine service. - Weather-Resistant Exterior
Helps protect the transformer from rain, sunlight, and long-term outdoor exposure.
| Rated Capacity (kVA) | High Voltage (kV) | No Load Loss (W) | On Load Loss (W) | Height (mm) | Depth (mm) | Width (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 15kVA |
34.5/19.92 13.8/7.96 13.2/7.6 12.47/7.2 or others |
50 | 195 | 840 | 740 | 610 | 294 |
| 25kVA | 80 | 290 | 840 | 740 | 610 | 362 | |
| 37.5kVA | 106 | 360 | 840 | 760 | 610 | 476 | |
| 50kVA | 135 | 500 | 840 | 810 | 610 | 553 | |
| 75kVA | 190 | 650 | 840 | 860 | 610 | 672 | |
| 100kVA | 280 | 1010 | 910 | 1200 | 965 | 714 | |
| 167kVA | 435 | 1530 | 1000 | 1200 | 965 | 913 | |
| 250kVA | 550 | 2230 | 1250 | 1300 | 1430 | 1106 |
- UL and cUL Listed Product Range
Our pole-mounted distribution transformer range from 10kVA to 500kVA is UL and cUL Listed under File No. E543292. Products are designed to meet or exceed applicable ANSI/IEEE, CSA, DOE 2016, and IEC 60076 requirements.
- Flexible Project Customization
Each transformer can be configured around project-specific voltage, capacity, protection, connection, and installation requirements. Customer-specified accessory brands, including Eaton Cooper Power series and Qualitrol, are also available upon request.
- Global Supply and Technical Support
With products supplied across North America, South America, and Southeast Asia, Winley Electric combines decades of transformer experience with responsive technical support. From specification review to final delivery, we provide safe, reliable, and efficient transformer solutions for utility and industrial projects.
A: Winley delivers standard pole-mounted distribution transformers within 30 days after technical approval. We provide a detailed production schedule and real-time manufacturing photos to help track progress.
A: We offer a flexible MOQ of just 1 unit. Complete inquiries are quoted within 1–2 days with 24/7 support, we ensure highly cost-effective and reliable solutions.
A: Yes. We accept OEM and ODM. Winley pole-mounted distribution transformers are available in standard ratings from 15-333 kVA (and maximum capability up to 500kVA), with HV systems up to 34.5 kV. According to customer drawings, we can customize secondary voltage, conventional or CSP design, copper or aluminum windings, low-carbon steel or stainless-steel tanks, tap changers, surge arresters, secondary circuit breakers, meter sockets and custom colors. We also integrate components from brands such as Qualitrol and Eaton Cooper.
A: Yes. Our full range of products are UL/cUL-certified under UL File No. E543292, designed strictly in compliance with ANSI/IEEE, CSA, DOE, NEMA and IEC 60076 to meet grid connection and regulatory standards.
A: We deliver a complete compliance package: approval drawings, datasheets, nameplate drawings, routine test reports, UL/cUL certs, DOE 2016 docs and accessory manuals. We also back your project with lifetime documentation support.
A: Winley ensures quality through 4 annual unannounced UL audits and strict ISO 9001 process management with dedicated QC oversight. Prior to delivery, every unit undergoes comprehensive routine testing, including Winding Resistance, Turns Ratio, Polarity and Phase Relation, and No-Load Loss and Excitation Current tests. We also fully support Factory Acceptance Testing (FAT) and third-party inspections (SGS).
A: 24 months from the B/L date, with extended warranty options available for up to 5 years. During the warranty period, If there are any accessory problems, just provide photos of damaged accessory, then we will provide free service. According to the number of products, we will provide easily damaged accessories for free. We can also provide technical support if you need.
A: Yes. Winley matches existing nameplates, utility specifications, mounting dimensions and protection configurations for replacement projects.
