100kVA 34.5kV Single Phase Pole Mounted Transformer for Rural Distribution
Product Overview
Winley supplies project-specific single-phase pole-mounted transformers for rural utilities, farms, remote properties and cold-climate distribution. These projects can involve higher-voltage overhead feeders, long outdoor distribution routes and substantial 120/240V loads at the point of use.
This 100kVA design supports 35kV-class overhead distribution and ambient temperatures down to -50°C, giving utilities and EPCs a practical option for bringing single-phase service to locations where conventional lower-voltage distribution designs do not cover the project requirement.
Product Display
Main Data
Electrical Ratings
| Specification | Data | Specification | Data |
| Model | D11-100/34.5/0.12-0.24 | Rated Capacity | 100kVA |
| Phase | Single Phase | Frequency | 60Hz |
| Primary Voltage | 34.5kV | Secondary Voltage | 120/240V |
| Primary BIL | 3200kV | Secondary BIL | 30kV |
| Temperature Rise | 65°C | Insulation Class | Class E |
Construction & Installation
| Parameter | Value | Parameter | Value |
| Winding Material | Aluminum | Cooling Type | ONAN |
| Ambient Temperature | -50°C to +50°C | Sound Level | 51dBA |
| Dimensions | 37.4D × 32.3W × 64.0H in | Total Weight | 1878lb |
Factory-Tested Performance
| Test Item | A1 | Test Item | A2 |
| No-Load Current | 0.50% | No-Load Current | 0.50% |
| No-Load Loss | 219.8W | No-Load Loss | 218.2W |
| Load Loss at 85°C | 707.6W | Load Loss at 85°C | 704.0W |
| Impedance | 2.58% | Impedance | 2.58% |
Technical drawings
Applications
The 100kVA single-phase capacity can support agricultural properties with several buildings, workshops, pumps or other substantial 120/240V loads.
Suitable for remote load points reached by overhead distribution where a local pole-mounted transformer is used to provide low-voltage service.
The -50°C operating limit suits outdoor projects where severe winter temperatures form part of the transformer specification.
Standard Features
- External Five-Position Tap Changer: Allows primary voltage adjustment from outside when the transformer is de-energized.
- Double Hanger Brackets: Built for secure pole mounting while keeping the transformer off the ground.
- H1/H2 High-Voltage Bushings: Provide the two primary-side connections required by this 34.5kV configuration.
- X1/X2/X3 4-Hole Spade Terminals: Provide practical connection points for the high-current 120/240V secondary circuit.
- Grounded X2 Neutral: Supports the grounded-neutral arrangement used for the 120/240V secondary service.
- Lightning Arrester Mounting Provisions: Pre-arranged mounting points allow external surge protection to be added when required.
- Automatic Pressure Relief Device: Releases excessive internal pressure to help protect the transformer tank.
- Weather-Resistant Exterior Finish: Coated-steel construction with stainless-steel hardware is configured for permanent outdoor installation.
Customization Range
| 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 |
Why Choose US
- 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.
FAQ:
Q1: What is the standard lead time?
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.
Q2: How soon can I get a quotation, and what is the MOQ?
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.
Q3: Is OEM/ODM available?
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.
Q4: Do you provide UL/cUL and ANSI/IEEE support?
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.
Q5: What documents can you provide for project approval?
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.
Q6: How do you ensure product quality?
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).
Q7: How long is the warranty?
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.
Q8: Can you support replacement projects?
A: Yes. Winley matches existing nameplates, utility specifications, mounting dimensions and protection configurations for replacement projects.
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