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5kVA Dual-Secondary Single Phase Pole-Mounted Transformer 24940Y/14400V to 120/240V DOE Efficiency
| Brand Name: | WINLEY |
| Model Number: | D11-5/24.94/0.24-0.12 |
| MOQ: | 1unit |
| Price: | $1000-$100000 |
| Packaging Details: | Plywood case |
| Payment Terms: | T/T |
- Winley Electric pole-mounted distribution transformers are UL and cUL Listed under File No. E543292, with ratings from 10 kVA through 500 kVA. They are built to meet or exceed applicable requirements of ANSI/IEEE, CSA, DOE 2016, and IEC 60076 standards.
- Winley Electric pole-mounted transformers can be flexibly customized to meet project requirements. Customer-specified accessory brands, such as Eaton Cooper Power series and Qualitrol, can also be provided upon request.
- Winley Electric transformers are supplied to global markets, including North America, South America, and Southeast Asia. Backed by decades of industry experience, we deliver safe, reliable, and efficient transformer designs with comprehensive technical support.
This 5kVA single-phase pole-mounted transformer is configured for a 24.94kV grounded-wye distribution system, using a 14.4kV phase-to-neutral primary input and two separately terminated 120/240V secondary windings. The X and Y secondary groups are brought out through six low-voltage bushings with NEMA 4-hole spade terminals, providing clearly identified connection points for two low-voltage circuit groups.
Built with copper windings, Type II non-PCB mineral oil, ONAN self-cooling and 125kV/30kV BIL, the transformer is designed for outdoor overhead distribution. A five-position no-load tap changer provides primary voltage adjustment from 13.68kV to 15.12kV. The configuration is well suited to utility replacement projects, special rural service points and applications requiring two separately identified 120/240V outputs.
| Specification | Data | Specification | Data |
|---|---|---|---|
| Product Type | Conventional single-phase pole-mounted distribution transformer | Model | D11-5/24.94/0.24-0.12 |
| Primary Voltage | 24940Y/14400V | Secondary Voltage | 2 × 120/240V |
| Rated Capacity | 5kVA | Phase | Single phase |
| Frequency | 60Hz | BIL | 125kV HV, 30kV LV |
| Specification | Data | Specification | Data |
|---|---|---|---|
| Transformer Configuration | Liquid-filled, conventional pole-mounted | Cooling Method | ONAN |
| Insulating Liquid | Type II non-PCB mineral oil | Winding Material | Copper |
| Core Material | Cold-rolled grain-oriented steel | Insulation Class | Class E, 120°C |
| Temperature Rise | 65°C | Ambient Range | -40°C to +40°C |
| Dimensions | Approx. 18.9 W × 25.1 D × 51.2 H in | Total Mass | 406 lb |
| Test Item | Tested Value | Test Item | Tested Value |
|---|---|---|---|
| Short-Circuit Impedance at 85°C | 2.11–2.15% | No-Load Loss | 19.9–22.0W |
| Load Loss at 85°C | 61.5–63.2W | No-Load Current | 0.80–0.89% |
Additional verification included:
- Winding resistance measurement
- Insulation resistance measurement
- Voltage ratio and connection-group test
- Polarity verification
- No-load loss and excitation-current test
- Load loss and impedance test
- Applied-voltage withstand test
- Induced-voltage withstand test
- Tank pressure-integrity test
- Two Porcelain High-Voltage Bushings
Provide H1 and H0 connection points for the 14.4kV phase-to-neutral primary circuit.
- Six Low-Voltage Bushings with NEMA 4-Hole Spades
Provide separate X1-X2-X3 and Y1-Y2-Y3 terminal groups for the two 120/240V secondary windings.
- External Five-Position No-Load Tap Changer
Allows de-energized primary voltage adjustment from 13.68kV to 15.12kV.
- Neutral-to-Tank Grounding Connections
The X2 and Y2 center taps are connected to the transformer grounding arrangement.
- Tank Grounding Terminal
Provides a dedicated field connection for grounding the transformer tank.
- Pressure Relief Device
Relieves excessive internal pressure during abnormal tank pressure buildup.
- Drain and Sampling Port
Provides access for insulating-oil draining, sampling and maintenance.
- Lightning-Arrester Mounting Provisions
Allow surge arresters to be installed close to the high-voltage terminals.
- Double Pole-Mounting Hanger Brackets
Secure the transformer to the utility pole structure.
- Lifting Lugs
Provide defined lifting points for transportation and field installation.
- Stainless Steel Riveted Nameplate
Displays electrical ratings, tap positions, terminal connections and unit identification.
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Utility Replacement & Specification Matching
Suitable for replacing existing pole-mounted transformers where voltage ratio, dual-secondary arrangement, polarity, tap range, mounting interface and terminal positions must match an established utility specification.
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Dual Low-Voltage Circuit Groups
Configured for service points requiring two separately identified 120/240V secondary groups through X1-X2-X3 and Y1-Y2-Y3 terminals.
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Rural Service Drops & Farm Power
Ideal for remote residences, cabins, small farms, barns and agricultural pump systems connected to 24.94kV grounded-wye overhead feeders.
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Agricultural Controls & Remote Equipment
Provides auxiliary power for irrigation controls, livestock equipment, gate automation, outdoor lighting and remote monitoring systems.
| 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 |
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 B/L. 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.
