45kVA Single Phase Pad-Mounted Transformer 13800V to 120/240V 304 Stainless Steel For URD
| Brand Name: | WINLEY |
| Model Number: | ZGD-H-45/13.8/0.12-0.24 |
| MOQ: | 1unit |
| Price: | $1000-$100000 |
| Packaging Details: | Plywood case |
| Payment Terms: | T/T |
45kVA single phase pad mounted transformer
,13800V to 120/240V transformer with warranty
,304 stainless steel URD transformer
- Winley Electric Single-phase pad mounted transformers are fully UL/cUL Listed (UL File No. E536138), and compliant with ANSI/IEEE, CSA, NEMA and DOE 2016 standards.
- Winley Electric single-phase pad-mounted transformers cover a capacity range from 15kVA to 833kVA, with voltage ratings up to 35kV. Product materials, structural design, electrical accessories, monitoring instruments and other configurations can be customized according to project requirements.
- Winley Electric supports 30-day fast delivery through a stable supply chain and mature production processes, with a monthly capacity of 500 units.
The 45 kVA single-phase pad-mounted transformer converts 13800V primary medium voltage down to 120/240V secondary low voltage, designed specifically for outdoor commercial and underground distribution networks. Configured with a loop-feed primary architecture, dead-front safety construction, and a 4-position loadbreak switch, it enables seamless sectionalizing and maintenance flexibility without interrupting local service.
Built with 100% 304 stainless steel enclosure and base, filled with biodegradable FR3 natural ester fluid, and compliant with DOE 2016 efficiency and ANSI C57.12.38 standards, this unit provides exceptional long-term corrosion resistance and environmental safety. It is engineered for harsh, high-humidity, coastal, or underground-fed infrastructure projects requiring reliable power delivery.
| Specification | Data | Specification | Data |
|---|---|---|---|
| Transformer Type | Single-phase compartmental pad-mounted transformer | Rated Capacity | 45 kVA |
| Primary Voltage | 13,800 V | Secondary Voltage | 120/240 V split-phase |
| Primary Voltage Class | 15 kV class | Phase | Single phase |
| Feed Type | Loop feed | Frequency | 60 Hz |
| Connection Symbol | Ii6 | HV/LV BIL | 95/30 kV |
| Cooling Method | KNAN, self-cooled | Temperature Rise | 65°C |
| Efficiency and Standards | DOE 2016 and applicable ANSI/IEEE C57 requirements | Rated Ambient Temperature | Up to 40°C |
| Specification | Data | Specification | Data |
|---|---|---|---|
| Insulating Liquid | FR3 natural ester, non-PCB | Winding Material | Copper |
| Core Material | Electrical steel | Tank Material | 304 stainless steel |
| Cabinet Material | 304 stainless steel | Base Material | 304 stainless steel |
| Dimensions | 41.3 W × 43.0 D × 33.2 H in | Total Weight | 1,645 lb |
| Test Item | Tested Value | Test Item | Tested Value |
|---|---|---|---|
| Short-Circuit Impedance | 2.79% at 85°C | No-Load Current | 0.25% |
| No-Load Loss | 86.9 W | Load Loss | 454.2 W at 85°C |
- Four-Position Load Break Switch — Provides primary circuit selection and switching within the high-voltage compartment.
- Seven-Position Off-Circuit Tap Changer — Adjusts the primary winding from 15,180 V to 13,110 V in 2.5% steps.
- Bayonet Expulsion Fuses — Provide accessible primary overcurrent protection.
- Partial-Range Current-Limiting Fuses — Operate in series with the bayonet fuses to limit high fault currents.
- Elbow Surge Arresters — Two 10 kV class, 8.4 kVrms MCOV arresters protect the primary circuit from voltage surges.
- X1, X2 and X3 Secondary Bushings — Provide the 120/240 V center-tapped split-phase output.
- NEMA Four-Hole Spade Terminals — Provide multiple low-voltage cable landing positions.
- Temperature Gauge — Displays the transformer liquid temperature during operation.
- Pressure/Vacuum Gauge — Indicates internal tank pressure and vacuum conditions.
- Pressure Relief Device — Releases excessive internal pressure to protect the sealed tank.
- Fill and Drain Connections — Support insulating-liquid filling, maintenance and draining operations.
- Grounding Provisions — Welded grounding points and an X2 copper grounding strap support equipment and neutral grounding.
- Pad-Lockable Lift-Up Lid — Restricts unauthorized access to the cable and operating compartments.
- Bottom Cable Entry — Allows primary and secondary underground cables to enter directly through the transformer foundation opening.

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Underground Residential Distribution
Ideal for supplying 120/240 V split-phase power from a 13.8 kV underground utility distribution circuit.
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Rural Properties and Farms
Suitable for farms, ranches, rural homes, workshops, pumps and auxiliary buildings requiring dependable single-phase service.
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Small Commercial Facilities
Provides 120/240 V service for small retail buildings, offices, service facilities and other low-voltage commercial loads.
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Municipal and Remote Utility Loads
Supports lighting, control equipment, communication facilities, utility buildings and remote infrastructure connected to medium-voltage distribution.
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Transformer Replacement Projects
Suitable for replacing existing single-phase pad-mounted units requiring 13.8 kV input, 120/240 V output and underground loop-feed connections.
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| Rated Capacity (kVA) |
High voltage (kV) |
No Load Loss (W) |
On load Loss (W) |
Height (mm) |
Depth (mm) |
Width (mm) |
Weight (kg) |
|---|---|---|---|---|---|---|---|
| 15 kVA | 34.5/19.92 13.8/7.96 13.2/7.6 12.47/7.2 or others |
50 | 195 | 840 | 740 | 610 | 294 |
| 25 kVA | 80 | 290 | 840 | 740 | 610 | 362 | |
| 37.5 kVA | 106 | 360 | 840 | 760 | 610 | 476 | |
| 50kVA | 135 | 500 | 840 | 810 | 610 | 553 | |
| 75 kVA | 190 | 650 | 840 | 860 | 610 | 672 | |
| 100 kVA | 280 | 1010 | 910 | 1200 | 965 | 714 | |
| 167 kVA | 435 | 1530 | 1000 | 1200 | 965 | 913 | |
| 250 kVA | 550 | 2230 | 1250 | 1300 | 1430 | 1106 |
A: Winley delivers standard single-phase pad-mounted 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. Leveraging our North American utility, residential and replacement project experience, we ensure highly cost-effective and reliable solutions.
A: Yes, We accept OEM and ODM. Winley single-phase pad-mounted transformers are available in standard ratings from 15–250kVA (and maximum capability up to 833kVA), with HV systems up to 35kV. We can customize electrical parameters, structure, fluid, protection, switches, gauges, tank and paint according to customer drawings, with the capability to integrate components from brands like Qualitrol, Eaton Cooper, and MR.
A: Yes. Our full range of products are UL/cUL-certified under UL File No. E536138, designed strictly in compliance with ANSI/IEEE, CSA, DOE, and NEMA requirements 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, installation manuals 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.